Download the Catalog - Arrow Electronics

May 2013
New Products Catalog
High Performance Analog ICs
NEW!!!! Free Demo Boards Available!!!!
Visit www.arrownac.com/ltcnewproducts
to register for your free demo board, view data sheets,
purchase parts, or contact your local Arrow
sales representative at 800.833.3557.
www.arrownac.com/Itcnewproducts
LTC3300-1 High Efficiency Bidirectional Multicell Battery Balancer
LTC2314-14 14-Bit, 4.5Msps Serial Sampling ADC in TSOT
LTM8045 Inverting or SEPIC µModule DC/DC Converter with
Up to 700mA Output Current
LTC2977 8-Channel PMBus Power System Manager Featuring
Accurate Output Voltage Measurement
LTC3129 15V, 200mA Synchronous Buck-Boost DC/DC Converter
with 1.3µA Quiescent Current
LTC6957 Low Phase Noise, Dual Output Buffer/Driver/
Logic Converter

Power Management
The Power to Innovate
Begins with Power.
Every electronic design must be created with power in
mind. Power management impacts your product’s profile,
cost and endurance.
Five Years Out, the way we use power will be even more
efficient and intelligent. Allowing devices to be smaller,
more portable, more precise and more feature-rich.
Enabling invention.
Let’s meet at Five Years Out.
arrow.com
arrow.com

Amplifier
Contents
LTC6430-15 High Linearity Differential RF/IF Amplifier/ADC Driver .....................................................................................................................1
Battery Charger
LTC4089-3 USB Power Manager with High Voltage Switching Charger ...............................................................................................................2
Battery Management System
LTC3300-1 High Efficiency Bidirectional Multicell Battery Balancer .....................................................................................................................3
Cable Drop Compensator
LT6110 Cable/Wire Drop Compensator ................................................................................................................................................................4
Charge Pump
LTC3245 Wide V IN Range, Low Noise, 250mA Buck-Boost Charge Pump ...........................................................................................................5
Data Converters
LTC2314-14 14-Bit, 4.5Msps Serial Sampling ADC in TSOT ................................................................................................................................6
LTC2315-12 12-Bit, 5Msps Serial Sampling ADC in TSOT ...................................................................................................................................9
LTC2378-20 20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL .................................................................................................................10
LTM9013 300MHz Digital Predistortion/Wideband Receiver ..............................................................................................................................11
Interface
LTC2862/LTC2863/LTC2864/LTC2865 ±60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers with –55°C to 125°C Operating Range ........12
LDO
LT3030 Dual 750mA/250mA Low Dropout, Low Noise, Micropower Linear Regulator ......................................................................................13
LED Driver
LT3954 40V IN LED Converter with Internal PWM Generator ..............................................................................................................................14
µModule ® Regulators
LTM8001 36VIN, 5A µModule Regulator with 5-Output Configurable LDO Array ................................................................................................15
LTM8045 Inverting or SEPIC µModule DC/DC Converter with Up to 700mA Output Current .............................................................................16
Power System Management
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement ...........................................................17
Switching Regulators—Monolithic
LTC3129 15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3µA Quiescent Current ....................................................................18
LTC3129-1 15V, 200mA Synchronous Buck-Boost DC/DC Converter with 1.3µA Quiescent Current .................................................................19
LTC3621/LTC3621-2 17V, 1A Synchronous Step-Down Regulator with 3.5µA Quiescent Current .....................................................................21
LTC3639 High Efficiency, 150V 100mA Synchronous Step-Down Regulator .....................................................................................................23

Switching Regulators—Controllers
Contents
LTC3859AL Triple Output, Buck/Buck/Boost Synchronous Controller with 28µA Burst Mode IQ ........................................................................24
LTC3863 60V Low IQ Inverting DC/DC Controller ...............................................................................................................................................25
LTC3890-3 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller ..........................................................................................26
Timing
LTC6957-1/LTC6957-2/LTC6957-3/LTC6957-4 Low Phase Noise, Dual Output Buffer/Driver/Logic Converter ..................................................29
LTC6995-1/LTC6995-2 TimerBlox ® : Long Timer, Low Frequency Oscillator .......................................................................................................30
L, Linear Express, Linear Technology, LT, LTC, LTM, Burst Mode, FilterCAD, LTspice, OPTI-LOOP, Over-The-Top, PolyPhase, SwitcherCAD, TimerBlox, µModule and the Linear logo are registered
trademarks of Linear Technology Corporation. Adaptive Power, Bat-Track, BodeCAD, C-Load, Direct Flux Limit, DirectSense, Easy Drive, EZSync, FilterView, Hot Swap, isoSPI, LDO+, LinearView,
LTBiCMOS, LTCMOS, LTPoE++, LTpowerCAD, LTpowerPlanner, LTpowerPlay, Micropower SwitcherCAD, Multimode Dimming, No Latency ∆Σ, No Latency Delta-Sigma, No RSENSE, Operational Filter,
PanelProtect, PLLWizard, PowerPath, PowerSOT, PScope, QuikEval, RH DICE Inside, RH MILDICE Inside, SafeSlot, SmartStart, SNEAK-A-BIT, SoftSpan, Stage Shedding, Super Burst, SWITCHER+,
ThinSOT, Triple Mode, True Color PWM, UltraFast, Virtual Remote Sense, Virtual Remote Sensing, VLDO and VRS are trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners.

LTC6430-15
High Linearity Differential
RF/IF Amplifier/ADC Driver
FEATURES DESCRIPTION
n 50.0dBm OIP3 at 240MHz into a 100Ω Diff Load
n NF = 3.0dB at 240MHz
n 20MHz to 2000MHz Bandwidth
n 15.2dB Gain
n A-Grade 100% OIP3 Tested at 240MHz
n 1.0nV/√Hz Total Input Noise
n S11 < –15dB Up to 1.2GHz
n S22 < –15dB Up to 1.2GHz
n >2.75VP-P Linear Output Swing
n P1dB = 24.0dBm
n Insensitive to VCC Variation
n 100Ω Differential Gain-Block Operation
n Input/Output Internally Matched to 100Ω Diff
n Single 5V Supply
n DC Power = 800mW
n Unconditionally Stable
n 4mm × 4mm, 24-Lead QFN Package
APPLICATIONS
n Differential ADC Driver
n Differential IF Amplifier
n OFDM Signal Chain Amplifier
n 50Ω Balanced IF Amplifier
n 75Ω CATV Amplifier
n 700MHz to 800MHz LTE Amplifier
DNC
DNC
DNC
DNC
DNC
DNC
1
2
3
4
5
6
+IN
GND
24 23 22 21 20 19
7 8 9
–IN
GND
TOP VIEW
VCC
25
GND
DNC
DNC
DNC
10 11 12
VCC
DNC
DNC
DNC
18
17
16
15
14
13
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
LTC6430AIUF-15
LTC6430BIUF-15
50Ω
+OUT
GND
T_DIODE
DNC
GND
–OUT
1:2
BALUN
R SOURCE = 100Ω
DIFFERENTIAL
Differential 16-Bit ADC Driver
5V
VCC = 5V
LTC6430-15
RLOAD = 100Ω
DIFFERENTIAL
Amplifier
The LTC ® 6430-15 is a differential gain block amplifier designed to
drive high resolution, high speed ADCs with excellent linearity beyond
1000MHz and with low associated output noise. The LTC6430-15
operates from a single 5V power supply and consumes only 800mW.
In its differential configuration, the LTC6430-15 can directly drive the
differential inputs of an ADC. Using 1:2 baluns, the device makes
an excellent 50Ω wideband balanced amplifier. While using 1:1.33
baluns, the device makes a high fidelity 50MHz to 1000MHz 75Ω
CATV amplifier.
The LTC6430-15 is designed for ease of use, requiring a minimum
of support components. The device is internally matched to 100Ω
differential source/load impedance. On-chip bias and temperature
compensation ensure consistent performance over environmental
changes.
The LTC6430-15 uses a high performance SiGe BiCMOS process
for excellent repeatability compared with similar GaAs amplifiers. All
A-grade LTC6430-15 devices are tested and guaranteed for OIP3
at 240MHz. The LTC6430-15 is housed in a 4mm × 4mm, 24-lead,
QFN package with an exposed pad for thermal management and
low inductance. For a single-ended 50Ω IF gain block with similar
performance, see the related LTC6431-15.
R F
CHOKES
FILTER
OIP3 (dBm)
50
48
46
44
42
OIP3 vs Frequency
40
38
36
VCC = 5V
POUT = 2dBm/TONE
ZIN = ZOUT = 100Ω DIFF.
TA = 25°C
0 200 400 600 800 1000 1200
FREQUENCY (MHz)
V CM
ADC
643015 TA01a
643015 TA01b
1

LTC4089-3
USB Power Manager with
High Voltage Switching Charger
FEATURES DESCRIPTION
n Seamless Transition Between Power Sources: Li-Ion Battery,
USB and 6V to 36V External Supply
n High Efficiency 1.2A Charger from 6V to 36V Input with
Adaptive Output Control
n 3.95V Float Voltage Improves Battery Lifespan and High
Temperature Safety Margin
n Load Dependent Charging from USB Input Guarantees
Current Compliance
n 215m Internal Ideal Diode plus Optional External Ideal
Diode Controller Provides Low Loss Power Path When
External Supply/USB Not Present
n Constant-Current/Constant-Voltage Operation with Thermal Feedback
to Maximize Charging Rate without Risk of Overheating
n Selectable 100% or 20% Current Limit (e.g., 500mA/100mA)
from USB Input
n Preset 3.95V Charge Voltage with ±0.8% Accuracy
n C/10 Charge Current Detection Output
n NTC Thermistor Input for Temperature Qualified Charging
n Tiny (6mm × 3mm × 0.75mm) 22-Lead DFN Package
APPLICATIONS
n Portable USB Devices—GPS Receivers, Cameras, MP3 Players,
PDAs
2
GND 1
GND 2
HVOUT 3
VC 4
NTC 5
VNTC 6
HVPR 7
CHRG 8
PROG 9
GATE 10
BAT 11
TOP VIEW
23
22 HVEN
21 HVIN
20 BOOST
19 SW
18 HVOUT
17 TIMER
16 SUSP
15 HPWR
14 CLPROG
13 OUT
12 IN
DJC PACKAGE
22-LEAD (6mm (6mm × × 3mm) 3mm) PLASTIC PLASTIC DFN
LTC4089EDJC-3
HIGH (6V-36V)
VOLTAGE INPUT
5V (NOM)
FROM USB
CABLE V BUS
0.1µF
1µF
4.7µF
HVIN
HVEN
IN
TIMER
CLPROG
2k
BOOST
LTC4089-3
GND PROG
Battery Charger
The LTC ® 4089-3 is a USB power manager plus high voltage Li-Ion
battery charger. This device controls the total current used by the
USB peripheral for operation and battery charging. Battery charge
current is automatically reduced such that the sum of the load
current and the charge current does not exceed the programmed
input current limit. The LTC4089-3 also accommodates high voltage
power supplies, such as 12V AC/DC wall adapters, Firewire, or
automotive power.
The LTC4089-3 provides an adaptive output that tracks the battery
voltage for high efficiency charging from the high voltage input.
This 3.95V version of the the standard LTC4089 is intended for
applications which have extended battery lifetime requirements or
those that require high temperature (approximately >60°C) operation
or storage. Under these conditions, a reduced float voltage will
trade off initial cell capacity for the benefit of increased capacity
retention over the life of the battery. The charge current is
programmable and an end-of-charge status output (CHRG)
indicates full charge. Also featured are programmable total charge
time, an NTC thermistor input used to monitor battery temperature
while charging and automatic recharging of the battery.
0.1µF
SW
HVOUT
HVPR
OUT
BAT
100k
+
10µH
1k
EFFICIENCY (%)
Li-Ion BATTERY
90
85
80
75
70
65
60
55
50
45
40
2.5
LTC4089 High Voltage
Battery Charger Efficiency
CC CURRENT = 970mA
NO OUTPUT LOAD
FIGURE 10 SCHEMATIC
WITH RPROG = 52k
10µF
4.7µF
3 3.5 4 4.5
BATTERY VOLTAGE (V)
TO LDOs
REGS, ETC.
VOUT (TYP)
VBAT + 0.3V
5V
VBAT
HVIN = 8V
HVIN = 12V
HVIN = 24V
HVIN = 36V
40893 TA01b
AVAILABLE INPUT
HV INPUT
USB ONLY
BAT ONLY
40893 TAO1a
Protected by U.S. Patents, including 6522118, 6700364, 7733061.

LTC3300-1
High Efficiency Bidirectional
Multicell Battery Balancer
FEATURES DESCRIPTION
n Bidirectional Synchronous Flyback Balancing
of Up to 6 Li-Ion or LiFePO 4 Cells in Series
n Up to 10A Balancing Current (Set by External Components)
n Bidirectional Architecture Minimizes Balancing Time and
Power Dissipation
n Up to 92% Charge Transfer Efficiency
n Stackable Architecture Enables >1000V Systems
n Uses Simple 2-Winding Transformers
n 1MHz Daisy-Chainable Serial Interface with 4-Bit
CRC Packet Error Checking
n High Noise Margin Serial Communication
n Numerous Fault Protection Features
n 48-Lead Exposed Pad QFN and LQFP Packages
APPLICATIONS
n Electric Vehicles/Plug-in HEVs
n High Power UPS/Grid Energy Storage Systems
n General Purpose Multicell Battery Stacks
G6S 1
I6S 2
G5S 3
I5S 4
G4S 5
I4S 6
G3S 7
I3S 8
G2S 9
I2S 10
G1S 11
I1S 12
48 VREG
47 TOS
46 VMODE
45 CSBO
44 SCKO
43 SDOI
42 BOOST
41 BOOST
40
39
38
37
–
BOOST +
C6
G6P
I6P
13
14
15
16
17
18
19
20
21
22
23
24
RTONS
RTONP
CTRL
TOP VIEW
49
V –
CHARGE TRANSFER EFFICIENCY (%)
100
95
90
85
80
6
CSBI
SCKI
SDI
SDO
WDT
V –
I1P
G1P
C1
LXE PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP LQFP
LTC3300ILXE-1
LTC3300HLXE-1
Balancer Efficiency
DC2064A DEMO BOARD
ICHARGE = I DISCHARGE = 2.5A
VCELL = 3.6V
36 C5
35 G5P
34 I5P
33 C4
32 G4P
31 I4P
30 C3
29 G3P
28 I3P
27 C2
26 G2P
25 I2P
CHARGE
DISCHARGE
8 10
12
NUMBER OF CELLS (SECONDARY SIDE)
G6S 1
I6S 2
G5S 3
I5S 4
G4S 5
I4S 6
G3S 7
I3S 8
G2S 9
I2S 10
G1S 11
I1S 12
33001 TA01b
TOP VIEW
48 VREG 47 TOS
46 VMODE
45 CSBO
44 SCKO
43 SDOI
42 BOOST
41 BOOST –
40 BOOST +
39 C6
38 G6P
37 I6P
49
V –
RTONS 13
RTONP 14
CTRL 15
CSBI 16
SCKI 17
SDI 18
SDO 19
WDT 20
V – 21
I1P 22
G1P 23
C1 24
Battery Management System
The LTC ® 3300-1 is a fault-protected controller IC for transformerbased
bidirectional active balancing of multicell battery stacks.
All associated gate drive circuitry, precision current sensing,
fault detection circuitry and a robust serial interface with built-in
watchdog timer are integrated.
Each LTC3300-1 can balance up to 6 series-connected battery cells
with an input common mode voltage up to 36V. Charge from any
selected cell can be transferred at high efficiency to or from 12 or
more adjacent cells. A unique level-shifting SPI-compatible serial
interface enables multiple LTC3300-1 devices to be connected in
series, without opto-couplers or isolators, allowing for balancing of
every cell in a long string of series-connected batteries.
When multiple LTC3300-1 devices are connected in series they
can operate simultaneously, permitting all cells in the stack to be
balanced concurrently and independently. Fault protection features
include readback capability, cyclic redundancy check (CRC) error
detection, maximum on-time volt-second clamps, and overvoltage
shutoffs.
CHARGE
SUPPLY
(ICHARGE 1-6)
UK UK PACKAGE PACKAGE
48-LEAD (7mm × 7mm) PLASTIC QFN QFN
LTC3300IUK-1
LTC3300HUK-1
36 C5
35 G5P
34 I5P
33 C4
32 G4P
31 I4P
30 C3
29 G3P
28 I3P
27 C2
26 G2P
25 I2P
High Efficiency Bidirectional Balancing
CHARGE
RETURN
(IDISCHARGE 1-6)
CHARGE
RETURN
CHARGE
SUPPLY
•
•
•
•
NEXT CELL ABOVE
I DISCHARGE
I CHARGE
+
+
+
+
CELL 12
CELL 7
CELL 6
CELL 1
NEXT CELL BELOW
LTC3300-1
LTC3300-1
33001 TA01a
3
3
3
3
SERIAL
DATA OUT
TO LTC3300-1
ABOVE
SERIAL
DATA IN
FROM
LTC3300-1
BELOW
3

LT6110
Cable/Wire Drop Compensator
FEATURES DESCRIPTION
n Improve Voltage Regulation to a Remote Load by 10×
n Ideal for Resistor-Adjustable Voltage Regulators
n Gain Configurable with a Single Resistor
n High Side Current Sensing:
Integrated 20mΩ Sense Resistor for Up to 3A
Ability to Use an External Sense Resistor
n 300µV Maximum Input Offset Voltage
n Output Current Accuracy of 1% Maximum
n 30µA Maximum Supply Current
n 2V to 50V Supply Range
n Fully Specified from –40°C to 125°C
n Available in Low Profile (1mm) ThinSOT and
(2mm × 2mm) DFN Packages
APPLICATIONS
n Automotive and Industrial Power Distribution
n USB Power
n DC/DC Converters
n Plug-In DC Adapters
n Power over Ethernet
4
V IN
TOP VIEW
+IN
V +
NC*
RS
IOUT
IMON
–IN
V –
9
V –
1
8
2
3
7
6
4
5
DC PACKAGE
8-LEAD (2mm × 2mm) PLASTIC DFN
LT6110IDC
LT6110HDC
IN
OUT
REGULATOR
GND
FB
V REG
IOUT
NC* 1
IOUT 2
IMON 3
V – 4
RIN
IMON
I LOAD
+IN V –IN
+
RS
LT6110
V –
TOP VIEW
+
–
8 +IN
7 V +
6 RS
5 –IN
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
LT6110ITS8
LT6110HTS8
Cable Drop Compensator
The LT ® 6110 is a precision high side current sense with a current
mode output, designed for controlling the output voltage of an
adjustable power supply or voltage regulator. This can be used to
compensate for drops in voltage at a remote load due to resistance
in a wire, trace or cable.
The LT6110 monitors load current via a series-connected internal or
external sense resistor. Two current mode outputs, one sinking and
one sourcing, are provided that are proportional to the load current.
This allows the LT6110 to adjust the output voltage of a wide variety
of regulators. Either output may be used to monitor the load current.
Low DC offset allows for the use of a small sense resistor, as well as
precise control of small variations in wire voltage drop.
500mV/DIV
5V
5V
2A
1A
R WIRE
V LOAD UNCOMPENSATED
V LOAD COMPENSATED
I LOAD
200µs/DIV
V LOAD
REMOTE
LOAD
6110 TA01

LTC3245
Wide V IN Range, Low Noise,
250mA Buck-Boost Charge Pump
FEATURES DESCRIPTION
n 2.7V to 38V V IN Range
n IQ = 18µA Operating; 4μA in Shutdown
n 12V to 5V Efficiency = 81%
n Multimode Operation (2:1, 1:1, 1:2) with Automatic
Mode Switching
n Low Noise, Constant Frequency Operation
n Pin Selectable Burst Mode ® Operation
n VOUT: Fixed 3.3V, 5V or Adjustable (2.5V to 5V)
n IOUT Up to 250mA
n Overtemperature and Short-Circuit Protection
n Operating Junction Temperature: 150°C Maximum
n Thermally Enhanced 12-Pin MSOP and Low Profile
12-Pin (3mm × 4mm) DFN Packages
APPLICATIONS
n Automotive ECU/CAN Transceiver Supplies
n Industrial Housekeeping Supplies
n Low Power 12V to 5V Conversion
VIN
VIN VIN BURST
SEL1
SEL2
1
2
3
4
5
6
TOP VIEW
13
GND
12
11
10
9
8
7
GND
C –
VOUT C +
PGOOD
OUTS/ADJ
DE PACKAGE
12-LEAD (3mm × 4mm) PLASTIC DFN
LTC3245EDE
LTC3245IDE
V IN
V IN
V IN
BURST
SEL1
SEL2
1
2
3
4
5
6
VIN = 2.7V TO 38V
TOP VIEW
13
GND
Efficient Regulated 5V Output
1µF
12
11
10
9
8
7
MSE PACKAGE
12-LEAD PLASTIC MSOP
LTC3245EMSE
LTC3245IMSE
LTC3245HMSE
1µF
C +
C –
LTC3245
VIN VOUT
SEL2 OUTS/ADJ
BURST PGOOD
SEL1 GND
Charge Pump
The LTC ® 3245 is a switched capacitor buck-boost DC/DC converter
that produces a regulated output (3.3V, 5V or adjustable) from a
2.7V to 38V input. The device uses switched capacitor fractional
conversion to maintain regulation over a wide range of input voltage.
Internal circuitry automatically selects the conversion ratio to
optimize efficiency as input voltage and load conditions vary. No
inductors are required.
The unique constant frequency architecture provides a lower noise
output than conventional charge pump regulators. To optimize
efficiency at the expense of slightly higher output ripple, the device
has pin selectable Burst Mode operation.
Low operating current (20μA with no load, 4μA in shutdown) and
low external parts count (three small ceramic capacitors) make
the LTC3245 ideally suited for low power, space constrained
automotive/industrial applications. The device is short-circuit and
overtemperature protected, and is available in thermally enhanced
12-pin MSOP and low profile 3mm × 4mm 12-pin DFN packages.
GND
C –
V OUT
C +
PGOOD
OUTS/ADJ
3245 TA01a
EFFICIENCY (%)
500k
90
80
70
60
50
40
30
20
5V OUT Efficiency vs Output Current
V IN = 12V
10
0.1 1 10
IOUT (mA)
100
0
1000
V OUT = 5V
IOUT UP TO 250mA
10µF
EFFICIENCY
P LOSS
3245 TA01b
400
350
300
250
200
150
100
50
PLOSS (mW)
5

LTC2314-14
14-Bit, 4.5Msps Serial Sampling ADC in TSOT
FEATURES DESCRIPTION
n 4.5Msps Throughput Rate
n Guaranteed 14-Bit No Missing Codes
n Internal Reference: 2.048V/4.096V Span
n Low Noise: 77.5dB SNR
n Low Power: 6.2mA at 4.5Msps and 5V
n Dual Supply Range: 3V/5V operation
n Sleep Mode with < 1µA Typical Supply Current
n Nap Mode with Quick Wake-up < 1 conversion
n Separate 1.8V to 5V Digital I/O Supply
n High Speed SPI-Compatible Serial I/O
n Guaranteed Operation from –40°C to 125°C
n 8-Lead TSOT-23 Package
APPLICATIONS
n Communication Systems
n High Speed Data Acquisition
n Handheld Terminal Interface
n Medical Imaging
n Uninterrupted Power Supplies
n Battery Operated Systems
n Automotive
6
VDD 1
REF 2
GND 3
AIN 4
TOP VIEW
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
LTC2314CTS8-14
LTC2314ITS8-14
LTC2314HTS8-14
8 CS
7 SCK
6 SDO
5 OVDD 2.2µF
5V
2.2µF
ANALOG INPUT
0V TO 4.096V
LTC2314-14
VDD
REF
GND
A IN
CS
SCK
SDO
OV DD
Data Converters
The LTC ® 2314-14 is a 14-bit, 4.5Msps, serial sampling A/D
converter that draws only 6.2mA from a wide range analog supply
adjustable from 2.7V to 5.25V. The LTC2314-14 contains an
integrated bandgap and reference buffer which provide a low cost,
high performance (20ppm/°C max) and space saving applications
solution. The LTC2314-14 achieves outstanding AC performance
of 77dB SINAD and –85dB THD while sampling a 500kHz input
frequency. The extremely high sample rate-to-power ratio makes
the LTC2314-14 ideal for compact, low power, high speed systems.
The LTC2314-14 also provides both nap and sleep modes for
further optimization of the device power within a system.
The LTC2314-14 has a high speed SPI-compatible serial interface
that supports 1.8V, 2.5V, 3V and 5V logic. The fast 4.5Msps
throughput makes the LTC2314-14 ideally suited for a wide variety
of high speed applications.
5V Supply, Internal Reference, 4.5Msps, 14-Bit Sampling ADC
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
–160
f S = 4.5Msps, f IN = 500kHz 32k-pt FFT
–140
0 250 500 750 1000 1250 1500 1750 2000 2250
FREQUENCY (kHz)
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
DIGITAL OUTPUT SUPPLY
1.8V TO 5V
2.2µF
231414 TA01
V DD = 5V
SNR = 77.5dBFS
SINAD = 76.9dBFS
THD = 84.9dB
SFDR = 88.1dB
231414 TA01a

The LTC ® 2314-14 leads a family of highly integrated 14-/12-bit SAR ADCs from 500ksps to 5Msps. Available in tiny 8-lead TSOT-23
packages, these ADCs integrate a precision bandgap reference with guaranteed 20ppm/ºC maximum temperature coefficient
and an internal reference buffer into an 8mm 2 footprint, saving space in high density designs. They offer the flexibility of 3V or 5V
supply operation and low power consumption, including nap and sleep modes.
Features
14-Bit 4.5Msps SAR ADC
20ppm/°C Max Integrated Reference in 8mm 2 TSOT
n Up to 5Msps Throughput Rate
n 77.5dB SNR, –85dB THD (14 Bits)
n ±3.75LSB INL Max, ±0.99LSB DNL Max (14 Bits)
n Internal Reference: 20ppm/°C Max, 2.048V/4.096V Span
n Low Power: 31mW at 4.5Msps and 5V
n Flexible Supply Range: 3V or 5V Operation
n Guaranteed Operation from –40°C to 125°C
n 8-Lead TSOT-23 Package
32k Point FFT, f S = 4.5Msps, f IN = 500kHz
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
–160
–140
0 250 500 750 1000 1250 1500 1750 2000 2250
FREQUENCY (kHz)
Complete 14-Bit/12-Bit Pin Compatible SAR ADC Family
14-Bit
12-Bit
Power
Consumption
3V/5V
500ksps
2312-14
2.5Msps
2313-14
4.5Msps
2314-14
5Msps
2312-12 2313-12 2315-12
8mW/14mW 14mW/26mW 18mW/31mW 19mW/32mW
L, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
V DD = 5V
SNR = 77.5dBFS
SINAD = 76.9dBFS
THD = 84.9dB
SFDR = 88.1dB

Resolution
Channels
14-Bit
12-Bit
10-Bit
8-Bit
8-Ch 6-Ch 2-Ch 1-Ch 8-Ch 6-Ch 4-Ch 2-Ch 1-Ch
8-Ch 6-Ch 2-Ch
1-Ch
2-Ch 1-Ch
Serial
6.6ksps to 75ksps
1286
1285
3V/5V Supply µPower
ADCs
3V Pin Compatible ADCs in
TSOT-6/-8 Packages
5V I2C ADCs in Tiny
DFN/QFN
5V SPI ADCs in Tiny
DFN/QFN
Serial SPI/Parallel
Interface
General Purpose SAR ADCs
8-Bit to 14-Bit Resolution, 6ksps to 5Msps
100ksps to 210ksps 250ksps to 450ksps 500ksps to 800ksps 1Msps
1855 1858
2360
1860L
1418 1417 1416
1419
1414 1411
±10V Bipolar
Input ADCs
Simultaneous
Sampling ADCs
2361
1860
0V to 2.048V Input,
ADC in SO-8
0V to 5V Input, 5V Supply
ADCs in PDIP-8 Package
3V/5V Supply Pin Compatible
ADCs in TSOT-8 Package
1408-14 2351-14
2362
2302
0V to 4.096V, ±2.048V Unipolar/Bipolar
Inputs with 5V, ±5V Supply
0V to 5V, ±5V Unipolar/Bipolar
Inputs with 5V, ±5V Supply
0V to 2.5V, ±1.25V
Unipolar/Bipolar
3V/5V Supply Pin
Compatible ADCs
1.25Msps to
1.6Msps 2Msps to 2.8Msps 3Msps to 3.5Msps 4.5Msps to 5Msps
2301 1401 1400 1404 1409 1410 1402 1412
Parallel
4.096V/±4.096V Unipolar or Bipolar
Inputs with Single ±5V Supply
3V/5V Supply
µPower ADCs
Serial SPI/Parallel
Interface
1407A 1407A-1
2312-12 2365
2313-12
2366
2315-12
2355-12 2356-12
2305 2306
1407 1407-1
1288
1594
2309 1290 1854 1857 2308
1598
1094
1098L
1298 1861L 1861
1594L
1598L
1092
1093
1098
1197L
1091 1199L 1199
1090
1863L
1096L 1096
1099
1196
www.linear.com/2314 n 1-800-4-LINEAR
1852
2312-14
1197
1198
1415
1408-12 2351-12
1863 1853 1851
1850
1403A 1403A-1 2355-14 2356-14
1403
2313-14
1403-1
2314-14
0V to 5V Input, 5V Supply
ADC in N-20, SW-20 Package
±2.5V Bipolar Inputs
with Single ±5V Supply
±1.8V SoftSpan Input
with 5V Supply
0213

LTC2315-12
12-Bit, 5Msps Serial Sampling ADC in TSOT
FEATURES DESCRIPTION
n 5Msps Throughput Rate
n Guaranteed 12-Bit No Missing Codes
n Internal Reference: 2.048V/4.096V Span
n Low Noise: 73dB SNR
n Low Power: 6.4mA at 5Msps and 5V
n Dual Supply Range: 3V/5V Operation
n Sleep Mode with < 1µA Typical Supply Current
n Nap Mode with Quick Wake-Up < 1 Conversion
n Separate 1.8V to 5V Digital I/O Supply
n High Speed SPI-Compatible Serial I/O
n Guaranteed Operation from –40°C to 125°C
n 8-Lead TSOT-23 Package
APPLICATIONS
n Communication Systems
n High Speed Data Acquisition
n Handheld Terminal Interface
n Medical Imaging
n Uninterrupted Power Supplies
n Battery Operated Systems
n Automotive
VDD 1
REF 2
GND 3
AIN 4
TOP VIEW
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
LTC2315CTS8-12
LTC2315ITS8-12
LTC2315HTS8-12
8 CS
7 SCK
6 SDO
5 OVDD 2.2µF
5V
2.2µF
ANALOG INPUT
0V TO 4.096V
LTC2315-12
VDD
REF
GND
A IN
CS
SCK
SDO
OV DD
Data Converters
The LTC ® 2315-12 is a 12-bit, 5Msps, serial sampling A/D converter
that draws only 6mA from a wide range analog supply adjustable
from 2.7V to 5.25V. The LTC2315-12 contains an integrated
bandgap and reference buffer which provide a low cost, high
performance (20ppm/°C max) and space saving applications
solution. The LTC2315-12 achieves outstanding AC performance
of 72.6dB SINAD and –84dB THD while sampling a 500kHz input
frequency. The extremely high sample rate-to-power ratio makes
the LTC2315-12 ideal for compact, low power, high speed systems.
The LTC2315-12 also provides both nap and sleep modes for
further optimization of the device power within a system.
The LTC2315-12 has a high speed SPI-compatible serial interface
that supports 1.8V, 2.5V, 3V and 5V logic. The fast 5Msps
throughput makes the LTC2315-12 ideally suited for a wide variety
of high speed applications.
AMPLITUDE (dBFS)
0
–20
–40
–60
–80
–100
–120
5V Supply, Internal Reference, 5Msps, 12-Bit Sampling ADC
f S = 5Msps, f IN = 500kHz 16k-pt FFT
V DD = 5V
SNR = 73.1dBFS
SINAD = 72.6dBFS
THD = –84dB
SFDR = 87dBc
–140
0 500 1000 1500 2000 2500
FREQUENCY (kHz)
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
DIGITAL OUTPUT SUPPLY
1.8V TO 5V
2.2µF
231512 TA01
231512 TA01a
9

LTC2378-20
20-Bit, 1Msps, Low Power
SAR ADC with 0.5ppm INL
FEATURES DESCRIPTION
n 1Msps Throughput Rate
n ±0.5ppm INL (Typ)
n Guaranteed 20-Bit No Missing Codes
n Low Power: 21mW at 1Msps, 21µW at 1ksps
n 104dB SNR (Typ) at f IN = 2kHz
n –125dB THD (Typ) at f IN = 2kHz
n Digital Gain Compression (DGC)
n Guaranteed Operation to 85°C
n 2.5V Supply
n Fully Differential Input Range ±V REF
n V REF Input Range from 2.5V to 5.1V
n No Pipeline Delay, No Cycle Latency
n 1.8V to 5V I/O Voltages
n SPI-Compatible Serial I/O with Daisy-Chain Mode
n Internal Conversion Clock
n 16-Lead MSOP and 4mm × 3mm DFN Packages
APPLICATIONS
n Medical Imaging
n High Speed Data Acquisition
n Portable or Compact Instrumentation
n Industrial Process Control
n Low Power Battery-Operated Instrumentation
n Automatic Test Equipment
CHAIN 1
VDD 2
GND 3
IN 4
5
6
7
8
+
IN –
GND
REF
REF/DGC
10
TOP VIEW
17
GND
16 GND
15 OVDD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 GND
9 CNV
DE PACKAGE
16-LEAD (4mm × 3mm) PLASTIC DFN
LTC2378CDE-20
LTC2378IDE-20
VREF
0V
VREF CHAIN
VDD
GND
IN +
IN –
GND
REF
REF/DGC
1
2
3
4
5
6
7
8
TOP VIEW
MS PACKAGE
16-LEAD PLASTIC MSOP
LTC2378CMS-20
LTC2378IMS-20
10Ω
0V 10Ω
+
–
6800pF
16 GND
15 OVDD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 GND
9 CNV
IN +
2.5V
Data Converters
The LTC ® 2378-20 is a low noise, low power, high speed 20-bit
successive approximation register (SAR) ADC. Operating from a
2.5V supply, the LTC2378-20 has a ±V REF fully differential input
range with V REF ranging from 2.5V to 5.1V. The LTC2378-20
consumes only 21mW and achieves ±2ppm INL maximum, no
missing codes at 20 bits with 104dB SNR.
The LTC2378-20 has a high speed SPI-compatible serial interface
that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring
a daisy-chain mode. The fast 1Msps throughput with no cycle
latency makes the LTC2378-20 ideally suited for a wide variety of
high speed applications. An internal oscillator sets the conversion
time, easing external timing considerations. The LTC2378-20
automatically powers down between conversions, leading to
reduced power dissipation that scales with the sampling rate.
The LTC2378-20 features a unique digital gain compression (DGC)
function, which eliminates the driver amplifier’s negative supply
while preserving the full resolution of the ADC. When enabled, the
ADC performs a digital scaling function that maps zero-scale code
from 0V to 0.1 • VREF and full-scale code from VREF to 0.9 • VREF. For
a typical reference voltage of 5V, the full-scale input range is now
0.5V to 4.5V, which provides adequate headroom for powering the
driving amplifier from a single 5.5V supply.
Integral Nonlinearity vs Output Code
2.0
1.8V TO 5V
10µF 0.1µF
VDD
OV DD
3300pF LTC2378-20
IN
6800pF
REF
2.5V TO 5.1V
GND
–
47µF
(X7R, 1210 SIZE)
INL ERROR (ppm)
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
REF/DGC
1.5
1.0
0.5
–2.0
0 262144 524288
OUTPUT CODE
786432 1048576
237820 TA01
0
–0.5
–1.0
–1.5
SAMPLE CLOCK
VREF 237820 TA02
Protected by U.S. Patents, including 7705765.

LTM9013
300MHz Digital Predistortion/Wideband Receiver
FEATURES DESCRIPTION
n Integrated I/Q Demodulator, IF Amplifier, and Dual 14-Bit,
310Msps High Speed ADC
n External Highpass Filter Allows Bandwidth Adjustment
n 300MHz Lowpass Filter for Each Channel
n RF Input Frequency Range: 0.7GHz to 4GHz
n 50Ω Single-Ended RF Port
n 50Ω Differential LO Port
n Frequency Flatness: 1.3dB Typical
n 66dBc IM3 Level at –7dBFS
n 59dB SNR at –1dBFS
n Parallel DDR LVDS Outputs
n Clock Duty Cycle Stabilizer
n Low Power: 2.6W
n Shutdown and Nap Modes
n 15mm × 15mm BGA Package
APPLICATIONS
n Telecommunications
n Wideband, Low IF Receivers
n Digital Predistortion Receivers
n Cellular Base Stations
A
B
C
D
E
F
G
H
J
K
L
M
N
P
1
TOP VIEW
2 3 4 5 6 7 8 9 10 11 12 13 14
BGA PACKAGE
196-LEAD 196-LEAD (15mm × 15mm × × 2.82mm) 2.82mm)
LTM9013CY-AA
LTM9013IY-AA
LNA
LTM9013
LO IN
The LTM ® 9013 is a 300MHz digital predistortion receiver. Utilizing
an integrated system in a package (SiP) technology, it is a μModule ®
(micromodule) receiver that includes a dual high speed 14-bit A/D
converter, lowpass filter, differential gain stages and a quadrature
demodulator.
The LTM9013 is perfect for digital predistortion applications, with
AC performance that includes 59dB SNR and 1.3dB frequency
flatness from DC to 300MHz. A highpass filter or simple AC coupling
are used external to the device for design flexiblity. The integrated
on-chip broadband transformers provide a 50Ω single-ended
interface at the RF input.
A 5V supply powers the demodulator and a 3.3V supply powers the
IF amplifiers for minimal distortion. A 1.8V supply allows low power
ADC operation. A separate output supply allows the DDR LVDS
outputs to drive 1.8V logic. An optional multiplexer allows both
channels to share a digital output bus. An optional clock duty cycle
stabilizer allows high performance at full speed for a wide range of
clock duty cycles.
V CC1
5V
0°
90°
GND
100Ω
5V
100Ω
100Ω
5V
100Ω
15nH
6.8pF
15nH
0.01µF
0.01µF
GAIN_Q GAIN_I
15nH
6.8pF
15nH
AMPLITUDE (dBFS)
0.01µF
0.01µF
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
V CC2
3.3V
SCK CS
Data Converters
64k Point FFT
f IN = 1950MHz, –1dBFS
16 32 48 64 80 96 112 128 144 160
FREQUENCY (MHz)
V DD
1.8V
ADC
9013 TA01b
CLKOUT
ADC
PAR/SER
SDI SDO GND
9013 TA01
OV DD
1.8V
ADC CLK
OF
11

LTC2862/LTC2863/LTC2864/LTC2865
±60V Fault Protected 3V to 5.5V RS485/RS422
Transceivers with –55°C to 125°C Operating Range
FEATURES DESCRIPTION
n Protected from Overvoltage Line Faults to ±60V
n 3V to 5.5V Supply Voltage
n 20Mbps or Low EMI 250kbps Data Rate
n ±15kV ESD Interface Pins, ±8kV All Other Pins
n Extended Common Mode Range: ±25V
n Guaranteed Failsafe Receiver Operation
n High Input Impedance Supports 256 Nodes
n 1.65V to 5.5V Logic Supply Pin (V L) for Flexible
Digital Interface (LTC2865)
n H-Grade Option Available (–40°C to 125°C)
n Fully Balanced Differential Receiver Thresholds for Low Duty
Cycle Distortion
n Current Limited Drivers and Thermal Shutdown
n Pin Compatible with LT1785 and LT1791
n Available in DFN and Leaded Packages
APPLICATIONS
n Supervisory Control and Data Acquisition (SCADA)
n Industrial Control and Instrumentation Networks
n Automotive and Transportation Electronics
n Building Automation, Security Systems and HVAC
n Medical Equipment
n Lighting and Sound System Control
LTC2862
TOP VIEW
RO 1
8 VCC RE 2
7 B
DE 3
6 A
DI 4
5 GND
S8 PACKAGE
8-LEAD (150mil) PLASTIC SO SO
TJMAX = 150°C, θJA = 150°C/W, θJC = 39°C/W
LTC2862CS8-1 LTC2862IS8-2
LTC2862IS8-1 LTC2862HS8-2
LTC2862HS8-1 LTC2682MPS8-1
LTC2862CS8-2 LTC2862MPS8-2
LTC2863
12
VCC 1
RO 2
DI 3
GND 4
TOP VIEW
8
7
6
5
A
B
Z
Y
S8 PACKAGE
8-LEAD (150mil) PLASTIC SO SO
TJMAX = 150°C, θJA = 150°C/W, θJC = 39°C/W
LTC2863CS8-1 LTC2863IS8-2
LTC2863IS8-1 LTC2863HS8-2
LTC2863HS8-1 LTC2863MPS8-1
LTC2863CS8-2 LTC2863MPS8-2
RO1
RE1
DE1
DI1
RO
RE
DE
DI
1
2
3
4
TOP VIEW
9
8 VCC 7 B
6 A
5 GND
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN DFN
EXPOSED PAD (PIN 9) CONNECT TO PCB GND
LTC2862CDD-1 TJMAX = 150°C, θJA = 43°C/W, LTC2862CDD-2
θJC = 3°C/W
LTC2862IDD-1 LTC2862IDD-2
LTC2862HDD-1 LTC2862HDD-2
V CC
RO
DI
GND
GND1
V GROUND LOOP
≤25V GND2
1
2
3
4
TOP VIEW
9
8 A
7 B
6 Z
5 Y
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN DFN
EXPOSED PAD (PIN 9) CONNECT TO PCB GND
LTC2863CDD-1 TJMAX = 150°C, θJA = 43°C/W, LTC2863CDD-2
θJC = 3°C/W
LTC2863IDD-1 LTC2863IDD-2
LTC2863HDD-1 LTC2863HDD-2
RS485 Link With Large Ground Loop Voltage
LTC2862 LTC2862
VCC1
VCC2
R R
Rt Rt D D
2862345 TA01a
RO2
RE2
DE2
DI2
Interface
The LTC ® 2862/LTC2863/LTC2864/LTC2865 are low power, 20Mbps
or 250kbps RS485/RS422 transceivers operating on 3V to 5.5V
supplies that feature ±60V overvoltage fault protection on the data
transmission lines during all modes of operation, including powerdown.
Low EMI slew rate limited data transmission is available in
a logic-selectable 250kbps mode in the LTC2865 and in 250kbps
versions of the LTC2862-LTC2864. Enhanced ESD protection allows
these parts to withstand ±15kV HBM on the transceiver interface
pins without latchup or damage.
Extended ±25V input common mode range and full failsafe
operation improve data communication reliability in electrically noisy
environments and in the presence of large ground loop voltages.
LTC2864
NC 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
TOP VIEW
S PACKAGE
14-LEAD (150mil) PLASTIC SO SO
TJMAX = 150°C, θJA = 88°C/W, θJC = 37°C/W
LTC2864CS-1 LTC2864IS-2
LTC2864IS-1 LTC2864HS-2
LTC2864HS-1 LTC2864MPS-1
LTC2864CS-2 LTC2864MPS-2
LTC2865
RO 1
RE 2
DE 3
DI 4
VL 5
GND 6
TOP VIEW
13
A,B
50V/DIV
A-B
0.5V/DIV
RO
5V/DIV
14 VCC 13 NC
12 A
11 B
10 Z
9 Y
8 NC
12 VCC 11 A
10 B
9 Z
8 Y
7 SLO
MSE PACKAGE
12-LEAD PLASTIC MSOP
EXPOSED PAD (PIN 13) CONNECT TO PCB GND
TJMAX = 150°C, LTC2865CMSE
θJA = 40°C/W, θJC = 10°C/W
LTC2865IMSE
LTC2865HMSE
A-B
RO
A,B
TOP VIEW
RO 1 10 VCC
RE 2
9 A
DE 3 11 8 B
DI 4
7 Z
GND 5
6 Y
DD PACKAGE
10-LEAD 10-LEAD (3mm × 3mm) PLASTIC DFN DFN
EXPOSED PAD (PIN 11) CONNECT TO PCB GND
LTC2864CDD-1 TJMAX = 150°C, θJA = 43°C/W, LTC2864CDD-2
θJC = 3°C/W
LTC2864IDD-1 LTC2864IDD-2
LTC2864HDD-1 LTC2864HDD-2
RO
RE
DE
DI
VL
GND
1
2
3
4
5
6
TOP VIEW
13
12 VCC
11 A
10 B
9 Z
8 Y
7 SLO
DE PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN DFN
EXPOSED PAD (PIN 13) CONNECT TO PCB GND
TJMAX = 150°C, LTC2865CDE
θJA = 43°C/W, θJC = 4.3°C/W
LTC2865IDE
LTC2865HDE
LTC2865 Receiving 10Mbps ±200mV Differential
Signal with 1MHz ±25V Common Mode Sweep
100ns/DIV
2862345 TA01b

LT3030
Dual 750mA/250mA Low Dropout,
Low Noise, Micropower Linear Regulator
FEATURES DESCRIPTION
n Output Current: 750mA/250mA
n Low Dropout Voltage: 300mV
n Low Noise: 20μV RMS (10Hz to 100kHz)
n Low Quiescent Current: 120μA/75μA
n Wide Input Voltage Range: 1.8V to 20V
n Adjustable Output: 1.220V Reference Voltage
n Shutdown Quiescent Current:

LT3954
40V IN LED Converter with Internal PWM Generator
FEATURES DESCRIPTION
n 3000:1 True Color PWM Dimming for LEDs
n Wide V IN Range: 4.5V to 40V
n Rail-to-Rail Current Sense Range: 0V to 40V
n Internal 40V/5A Switch
n Programmable PWM Dimming Signal Generator
n Constant Current (±3%) and Constant-Voltage (±2%) Regulation
n Accurate Analog Dimming
n Drives LEDs in Boost, SEPIC, CUK, Buck Mode, Buck-Boost
Mode, or Flyback Configuration
n Output Short-Circuit Protected Boost
n Open LED Protection and Reporting
n Adjustable Switching Frequency: 100kHz to 1MHz
n Programmable V IN UVLO with Hysteresis
n C/10 Indication for Battery Chargers
n Low Shutdown Current:

LTM8001
36V IN, 5A µModule Regulator
with 5-Output Configurable LDO Array
FEATURES DESCRIPTION
n Complete Step-Down Switch Mode Power Supply with Configurable
Array of Five LDOs
n Step-Down Switching Power Supply
– Adjustable 10% Accurate Output Current Limit
– Constant-Current, Constant-Voltage Operation
– Wide Input Voltage Range: 6V to 36V
– 1.2V to 24V Output Voltage
n Configurable Output LDO Array
– Five 1.1A Parallelable Outputs
– Outputs Adjustable from 0V to 24V
– Low Output Noise: 90μV RMS (10Hz to 1MHz)
n 15mm × 15mm × 3.42mm Surface Mount BGA Package
APPLICATIONS
n FPGA, DSP, ASIC and Microprocessor Supplies
n Servers and Storage Devices
n RF Transceivers
11
VOUT5 10
SET5
9
BIAS45
8
BIAS123
V
7
IN45
BANK 3
6
5
VOUT0
BANK 4 4
3
2
1
VOUT4 SET4
TOP VIEW
VOUT3 SET3 SET2 VOUT2 A B C D E F G H J K
BGA PACKAGE
121 121 PADS (15mm × 15mm × × 3.42mm)
LTM8001EY
LTM8001IY
V IN
6V TO 36V
GND
BANK 2
10µF
3.3V
Protected by U.S. Patents, including 7199560, 7321203.
VREF SYNC
SS
L
VOUT1
SET1
ILIM
RT
COMP
FBO
RUN
V IN0
BANK 1
VIN45
VIN0 510k
RUN
BIAS123
BIAS45 LTM8001
COMP
SS
VREF
ILIM
SYNC
GND
µModule Regulators
The LTM ® 8001 is a 36V IN, 5A step-down μModule ® regulator with a
5-output configurable LDO array. Operating over an input voltage
range of 6V to 36V, the LTM8001 buck regulator supports an output
voltage range of 1.2V to 24V. Following the buck regulator is an
array of five 1.1A linear regulators whose outputs may be connected
in parallel to accommodate a wide variety of load combinations.
Three of these LDOs are tied to the output of the buck regulator,
while the other two are tied together to an undedicated input.
The low profile package (3.42mm) enables utilization of unused
space on the bottom of PC boards for high density point of load
regulation. The LTM8001 is packaged in a thermally enhanced,
compact (15mm × 15mm) and low profile (3.42mm) overmolded
ball grid array (BGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8001 is RoHS
compliant.
5A Output DC/DC µModule Converter
STEP-DOWN
SWITCHING
REGULATOR
RT
118k
350kHz
FBO
LDO 1
LDO 2
LDO 3
LDO 4
LDO 5
19.6k
VOUT0
VOUT1 SET1
VOUT2 SET2
VOUT3 SET3
VOUT4 SET4
VOUT5 SET5
4.7µF 4.7µF 2.2µF
45.3k 54.9k 121k
+
470µF
100µF
1.8V
1A
1.2V
1A
1.1V
1.5A
0.9V
1.5A
8001 TA01
15

LTM8045
Inverting or SEPIC µModule DC/DC Converter
with Up to 700mA Output Current
FEATURES DESCRIPTION
n SEPIC or Inverting Topology
n Wide Input Voltage Range: 2.8V to 18V
n Up to 700mA Output Current at V IN = 12V,
V OUT = 2.5V or –2.5V
n Up to 375mA Output Current at V IN = 12V,
V OUT =15V or –15V
n 2.5V to 15V or –2.5V to –15V Output Voltage
n Selectable Switching Frequency: 200kHz to 2MHz
n Programmable Soft-Start
n User Configurable Undervoltage Lockout
n 6.25mm × 11.25mm × 4.92mm BGA Package
APPLICATIONS
n Battery Powered Regulator
n Local Negative Voltage Regulator
n Low Noise Amplifier Power
V OUT –
BANK 1
V OUT +
BANK 2
16
5
4
3
2
1
FB
A B C D
TOP VIEW
GND
BANK 3
E F
SS RT
BGA PACKAGE
40-LEAD (11.25mm × 6.25mm × × 4.92mm)
LTM8045EY
LTM8045IY
LTM8045MPY
G
VIN
2.8VDC TO 18VDC
H
V IN
BANK 4
4.7µF
RUN
SYNC
130k
115k
V IN
RUN
SS
RT
SYNC
VIN
RUN
SS
RT
SYNC
•
•
µModule Regulators
The LTM ® 8045 is a µModule ® (micromodule) DC/DC converter that
can be configured as a SEPIC or inverting converter by simply
grounding the appropriate output rail. In a SEPIC configuration the
regulated output voltage can be above, below or equal to the input
voltage. The LTM8045 includes power devices, inductors, control
circuitry and passive components. All that is needed to complete
the design are input and output capacitors, and small resistors to
set the output voltage and switching frequency. Other components
may be used to control the soft-start and undervoltage lockout.
The LTM8045 is packaged in a compact (6.25mm × 11.25mm)
overmolded ball grid array (BGA) package suitable for automated
assembly by standard surface mount equipment. The LTM8045 is
RoHS compliant.
Use Two LTM8045s to Generate ±5V
LTM8045
GND
LTM8045
GND
•
•
V OUT –
FB
V OUT +
VOUT –
FB
V OUT +
OUTPUT CURRENT (mA)
8045 TA01b
800
700
600
500
400
300
200
100
±2.5VOUT
±3.3VOUT
±5VOUT
±8VOUT
±12VOUT
±15VOUT
2 4 6 8 10 12 14 16 18
INPUT VOLTAGE (V)
60.4k
45.3k
Maximum Output Current
vs Input Voltage
V OUT
–5V
22µF
100µF
VOUT
5V
8045 TA01b

LTC2977
8-Channel PMBus Power System Manager
Featuring Accurate Output Voltage Measurement
FEATURES DESCRIPTION
n Sequence, Trim, Margin and Supervise Eight Power Supplies
n Manage Faults, Monitor Telemetry and Create Fault Logs
n PMBus Compliant Command Set
n Supported by LTpowerPlay GUI
n Margin or Trim Supplies to 0.25% Accuracy
n Fast OV/UV Supervisors Per Channel
n Coordinate Sequencing and Fault Management Across
Multiple Chips
n Automatic Fault Logging to Internal EEPROM
n Operate Autonomously without Additional Software
n Internal Temperature and Input Voltage Supervisors
n Accurate Monitoring of Eight Output Voltages, Input Voltage and
Internal Die Temperature
n I2C/SMBus Serial Interface
n Can Be Powered from 3.3V, or 4.5V to 15V
n Programmable Watchdog Timer
n 100% Pin-Compatible Upgrade to the LTC2978/LTC2978A
n Available in 64-pin 9mm × 9mm QFN Package
APPLICATIONS
n Computers and Network Servers
n Industrial Test and Measurement
n High Reliability Systems
n Medical Imaging
n Video
VSENSEM6 1
VSENSEP7 2
VSENSEM7 3
VOUT_EN0 4
VOUT_EN1 5
VOUT_EN2 6
VOUT_EN3 7
VOUT_EN4 8
VOUT_EN5 9
VOUT_EN6 10
VOUT_EN7 11
VIN_EN 12
DNC 13
VIN_SNS 14
VPWR 15
VDD33 16
TOP VIEW
64 VSENSEP6 63 VSENSEM5 62 VSENSEP5 61 VDACM7 60 VDACP7 59 VDACP6 58 VDACM6 57 VDACM5 56 VDACP5 55 VDACP4 54 VDACM4 53 VSENSEM4 52 VSENSEP4 51 VDACM3 50 VDACP3 49 VSENSEM3 65
GND
VDD33 17
VDD25 18
WP 19
PWRGD 20
SHARE_CLK 21
WDI/RESETB 22
FAULTB00 23
FAULTB01 24
FAULTB10 25
FAULTB11 26
SDA 27
SCL 28
ALERTB 29
CONTROL0 30
CONTROL1 31
ASEL0 32
UP UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
64-LEAD (9mm × 9mm) PLASTIC QFN
LTC2977CUP
LTC2977IUP
48 V SENSEP3
47 V SENSEM2
46 VSENSEP2
45 VDACM2
44 VDACP2
43 VSENSEM1
42 V SENSEP1
41 VDACM1
40 VDACP1
39 VDACP0
38 VDACM0
37 VSENSEM0
36 V SENSEP0
35 REFM
34 REFP
33 ASEL1
Protected by U.S. Patents, including 7382303, 7420359 and 7940091.
4.5V < VIBUS < 15V**
3.3V**
TO INTERMEDIATE
BUS CONVERTER ENABLE
PMBus
INTERFACE
WRITE-PROTECT
TO/FROM OTHER
LTC POWER SUPPLY MANAGERS
The LTC ® 2977 is an 8-channel Power System Manager used to
sequence, trim (servo), margin, supervise, manage faults, provide
telemetry and create fault logs. PMBus commands support power
supply sequencing, precision point-of-load voltage adjustment
and margining. DACs use a proprietary soft-connect algorithm
to minimize supply disturbances. Supervisory functions include
overvoltage and undervoltage threshold limits for eight power supply
output channels and one power supply input channel, as well as
over and under temperature limits. Programmable fault responses
can disable the power supplies with optional retry after a fault is
detected. Faults that disable a power supply can automatically
trigger black box EEPROM storage of fault status and associated
telemetry. An internal 16-bit ADC monitors eight output voltages,
one input voltage, and die temperature. In addition, odd numbered
channels can be configured to measure the voltage across a
current sense resistor. A programmable watchdog timer monitors
microprocessor activity for a stalled condition and resets the
microprocessor if necessary. A single wire bus synchronizes power
supplies across multiple LTC power system management devices.
Configuration EEPROM supports autonomous operation without
additional software.
Power System Management
ERROR (%)
Typical ADC Total Unadjusted
Error vs Temperature
8-Channel PMBus Power System Manager
VPWR
VIN_SNS VDD33
VDACP0
VIN_EN
VSENSEP0
SDA LTC2977*
SCL
VDACM0 ALERTB VSENSEM0
CONTROL0 VOUT_EN0
WP
PWRGD
WDI/RESETB
FAULTB00
ASEL0
SHARE_CLK
ASEL1
GND
2977 TA01a
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
–50
VSENSEP0 = 1.8V
THREE TYPICAL PARTS
–30 –10 10 30 50 70 90 110
TEMPERATURE (°C)
VIN
2977 TA01b
R20
R30
VOUT DIGITALLY
MANAGED
POWER
SUPPLY
LOAD
VFB R10
TO µP RESETB INPUT
WATCHDOG
TIMER INTERRUPT
SGND
RUN/SS
GND
*SOME DETAILS OMITTED FOR CLARITY
ONLY ONE OF EIGHT CHANNELS SHOWN
**MAY BE POWERED FROM EITHER AN
EXTERNAL 3.3V SUPPLY OR THE INTERMEDIATE BUS
17

LTC3129
15V, 200mA Synchronous Buck-Boost
DC/DC Converter with 1.3µA Quiescent Current
FEATURES DESCRIPTION
n Regulates V OUT Above, Below or Equal to V IN
n Wide V IN Range: 2.42V to 15V, 1.92V to 15V After Start-Up
(Bootstrapped)
n Wide V OUT Range: 1.4V to 15.75V
n 200mA Output Current in Buck Mode
n Single Inductor
n 1.3µA Quiescent Current
n Programmable Maximum Power Point Control
n 1.2MHz Ultralow Noise PWM
n Current Mode Control
n Pin Selectable Burst Mode ® Operation
n Up to 95% Efficiency
n Accurate RUN Pin Threshold
n Power Good Indicator
n 10nA Shutdown Current
n Thermally Enhanced 3mm × 3mm QFN and
16-Lead MSOP Packages
APPLICATIONS
n Industrial Wireless Sensor Nodes
n Post-Regulator for Harvested Energy
n Solar Panel Post-Regulator/Charger
n Intrinsically Safe Power Supplies
n Wireless Microphones
n Avionics-Grade Wireless Headsets
18
V CC
RUN
MPPC
GND
FB
NC
NC
PWM
BST1
V IN
V CC
RUN
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
MSE PACKAGE
16-LEAD PLASTIC MSOP
LTC3129EMSE
LTC3129IMSE
1
2
3
4
17
PGND
TOP VIEW
SW1
PGND
SW2
BST2
16 15 14 13
17
PGND
5 6 7 8
MPPC
GND
FB
NC
V IN
BST1
SW1
PGND
SW2
BST2
V OUT
PGOOD
12 VOUT 11 PGOOD
10 PWM
9 NC
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
LTC3129EUD
LTC3129IUD
2.42V TO 15V
V IN
10µF
V CC
Switching Regulators—Monolithic
The LTC ® 3129 is a high efficiency, 200mA buck-boost DC/DC
converter with a wide V IN and V OUT range. It includes an accurate
RUN pin threshold to allow predictable regulator turn-on and a
maximum power point control (MPPC) capability that ensures
maximum power extraction from non-ideal power sources such as
photovoltaic panels.
The LTC3129 employs an ultralow noise, 1.2MHz PWM switching
architecture that minimizes solution footprint by allowing the use
of tiny, low profile inductors and ceramic capacitors. Built-in loop
compensation and soft-start simplify the design. For high efficiency
operation at light loads, automatic Burst Mode operation can be
selected, reducing the quiescent current to just 1.3µA.
Additional features include a power good output, less than 10nA of
shutdown current and thermal shutdown.
The LTC3129 is available in thermally enhanced 3mm × 3mm QFN
and 16-lead MSOP packages. For fixed output voltage options, see
the functionally equivalent LTC3129-1, which eliminates the need for
an external feedback divider.
BST1 SW1 SW2 BST2
VIN VOUT RUN
MPPC
PWM
22nF
GND
10µH
LTC3129
PGND
22nF
EFFICIENCY (%)
FB
PGOOD
V CC
100
90
80
70
60
50
40
Efficiency and Power Loss vs Load
EFFICIENCY
30
20
10
VOUT = 5V
0
0.01 0.1 1 10
VIN = 2.5V
0.1
VIN = 3.6V
VIN = 5V
VIN = 15V
0.01
100 1000
OUTPUT CURRENT (mA)
VOUT 10µF 10pF
3.32M
2.2µF
5V AT 200mA, V IN > 5V
5V AT 100mA, VIN < 5V
1.02M
POWER LOSS
3129 TA01a
3129 TA01b
1000
100
10
1
POWER LOSS (mW)

LTC3129-1
15V, 200mA Synchronous Buck-Boost
DC/DC Converter with 1.3µA Quiescent Current
FEATURES DESCRIPTION
n Regulates V OUT Above, Below or Equal to V IN
n Wide V IN Range: 2.42V to 15V, 1.92V to 15V After Start-Up
(Bootstrapped)
n Fixed Output Voltage with Eight User-Selectable Settings
from 2.5V to 15V
n 200mA Output Current in Buck Mode
n Single Inductor
n 1.3µA Quiescent Current
n Programmable Maximum Power Point Control
n 1.2MHz Ultralow Noise PWM
n Current Mode Control
n Pin Selectable Burst Mode ® Operation
n Up to 95% Efficiency
n Accurate RUN Pin Threshold
n Power Good Indicator
n 10nA Shutdown Current
n Thermally Enhanced 3mm × 3mm QFN and
16-Lead MSOP Packages
APPLICATIONS
n Industrial Wireless Sensor Nodes
n Post-Regulator for Harvested Energy
n Solar Panel Post-Regulator/Charger
n Intrinsically Safe Power Supplies
n Wireless Microphones
n Avionics-Grade Wireless Headsets
V CC
RUN
MPPC
GND
VS3
VS2
VS1
PWM
BST1
V IN
V CC
RUN
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
MSE PACKAGE
16-LEAD PLASTIC MSOP
LTC3129EMSE-1
LTC3129IMSE-1
1
2
3
4
17
PGND
TOP VIEW
SW1
PGND
SW2
BST2
16 15 14 13
5 6 7 8
MPPC
GND
17
PGND
VS3
VS2
V IN
BST1
SW1
PGND
SW2
BST2
V OUT
PGOOD
12 VOUT 11 PGOOD
10 PWM
9 VS1
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
LTC3129EUD-1
LTC3129IUD-1
V IN
2.42V TO 15V
AA OR AAA
BATTERIES
10µF
V CC
Switching Regulators—Monolithic
The LTC ® 3129-1 is a high efficiency, 200mA buck-boost DC/DC
converter with a wide V IN and V OUT range. It includes an accurate
RUN pin threshold to allow predictable regulator turn-on and a
maximum power point control (MPPC) capability that ensures
maximum power extraction from non-ideal power sources such as
photovoltaic panels.
The LTC3129-1 employs an ultralow noise, 1.2MHz PWM switching
architecture that minimizes solution footprint by allowing the use
of tiny, low profile inductors and ceramic capacitors. Built-in loop
compensation and soft-start simplify the design. For high efficiency
operation at light loads, automatic Burst Mode operation can be
selected, reducing the quiescent current to just 1.3µA. To further
reduce part count and improve light load efficiency, the LTC3129-1
includes an internal voltage divider to provide eight selectable fixed
output voltages.
Additional features include a power good output, less than 10nA of
shutdown current and thermal shutdown.
The LTC3129-1 is available in thermally enhanced 3mm × 3mm QFN
and 16-lead MSOP packages. For an adjustable output voltage, see
the functionally equivalent LTC3129.
BST1 SW1 SW2 BST2
VIN VOUT RUN
22nF
MPPC
PWM
VS1
VS2
VS3
LTC3129-1
GND
10µH
EFFICIENCY (%)
PGND
22nF
100
90
80
70
60
50
40
PGOOD
Efficiency and Power Loss vs Load
30
20
10
VOUT = 5V
0
0.01 0.1 1 10
VIN = 2.5V
0.1
VIN = 3.6V
VIN = 5V
VIN = 15V
0.01
100 1000
OUTPUT CURRENT (mA)
V CC
EFFICIENCY
31291 TA01a
10µF
2.2µF
POWER LOSS
V OUT
5V AT
100mA VIN < V OUT
200mA V IN > V OUT
3129 TA01b
1000
100
10
1
POWER LOSS (mW)
19

4A
Features
• 8 Independent Synchronous Bucks
• Master-slave Configurable for up to
4A Output/Rail with 1 Inductor
• 15 Power Stage Configurations
• Independent VIN Supplies for Each
Converter
• Precision Enable Pin Thresholds for
Autonomous Sequencing (or I 2 C
Control)
• On-Chip Die Temp Monitor
• QFN-48 Package
(7mm x 7mm x 0.75mm)
Octo-Buck
VIN
1
2
3
4
5
6
7
8
Outputs Easily Paralleled
4A
4A
VIN
The LTC ® 3375 delivers a new level of design flexibility with its multiconfigurable 8-channel outputs. Up to four channels
can be tied together for up to 4A of output current with a single inductor. 15 unique output rail combinations are possible,
enabling late-stage power level adjustments. Each synchronous DC/DC converter can be powered and controlled independently.
An on-chip die temperature sensor provides real-time thermal data for safe operation. Pushbutton control, power-on reset,
watchdog timer and an I 2 C serial port provide flexible control and high reliability.
Efficiency (%)
1
2
3
4
5
6
7
8
4A
2A
1A
1A
Buck Efficiency vs Load
100
90
80
70
60
50
40
30 Burst Mode
20
10
0
1 10 100 1000
Load Current (mA)
® SINGLE STAGE
DUAL STAGE
TRIPLE STAGE
QUAD STAGE
OPERATION
VIN = 3.3V
VOUT = 1.8V
fOSC = 2MHz
L = 2.2µH
VIN
1
2
3
4
5
6
7
8
•
•
•
•
•
•
1A
1A
2A
Info & Free Samples
www.linear.com/product/LTC3375
1-800-4-LINEAR
www.linear.com/product/LTC3375
1A
1A
1A
1A
, LT, LTC, LTM, Linear Technology, the Linear logo and Burst
Mode are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.

LTC3621/LTC3621-2
17V, 1A Synchronous Step-Down Regulator
with 3.5µA Quiescent Current
FEATURES DESCRIPTION
n Wide V IN Range: 2.7V to 17V
n Wide V OUT Range: 0.6V to V IN
n 95% Max Efficiency
n Low I Q < 3.5µA, Zero-Current Shutdown
n Constant Frequency (1MHz/2.25MHz)
n Full Dropout Operation with Low I Q
n 1A Rated Output Current
n ±1% Output Voltage Accuracy
n Current Mode Operation for Excellent Line and Load
Transient Response
n Pulse-Skipping, Forced Continuous, Burst Mode ® Operation
n Internal Compensation and Soft-Start
n Overtemperature Protection
n Compact 6-Lead DFN (2mm × 3mm) Package or 8-Lead MSOPE
Package with Power Good Output and Independent SGND Pin
APPLICATIONS
n Portable-Handheld Scanners
n Automotive Applications
n Emergency Radio
SW
1
VIN 2
RUN 3
TOP VIEW
7
GND
DCB PACKAGE
6-LEAD (2mm × 3mm) PLASTIC DFN
LTC3621EDCB
LTC3621IDCB
LTC3621EMS8E
LTC3621IMS8E
6
MODE
5 INTVCC
4 FB
SW
V IN
RUN
PGOOD
V IN
2.7V TO 17V
Protected by U.S. Patents, including 5481178, 6580258, 6498466, 6611131, 6177787, 5705919, 5847554.
1
2
3
4
TOP VIEW
9
GND
MS8E PACKAGE
8-LEAD PLASTIC MSOP
LTC3621EDCB
LTC3621IDCB
LTC3621EMS8E-2
LTC3621IMS8E-2
Switching Regulators—Monolithic
The LTC ® 3621/LTC3621-2 is a high efficiency 17V, 1A synchronous
monolithic step-down regulator. The switching frequency is fixed to
1MHz or 2.25MHz. The regulator features ultralow quiescent current
and high efficiencies over a wide V OUT range.
The step-down regulator operates from an input voltage range of
2.7V to 17V and provides an adjustable output range from 0.6V to
V IN while delivering up to 1A of output current. A user-selectable
mode input is provided to allow the user to trade off ripple noise
for light load efficiency; Burst Mode operation provides the highest
efficiency at light loads, while pulse-skipping mode provides the
lowest voltage ripple.
List of LTC3621 Options
PART NAME FREQUENCY VOUT LTC3621 1.00MHz Adjustable
LTC3621-2 2.25MHz Adjustable
2.5V V OUT with 400mA Burst Clamp, f SW = 1MHz
10µF
8 SGND
7 MODE
6 INTVCC 5 FB
VIN SW
LTC3621
RUN FB
MODE
INTVCC
GND
Efficiency and Power Loss vs Load
4.7µH VOUT 2.5V
604k
191k
22pF
1A
22µF
1µF
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.0001
0.001 0.01
VIN = 12V
0.0001
0.1 1
LOAD CURRENT (A)
3621 TA01a
EFFICIENCY
POWER LOSS
3621 TA01b
1.0
0.1
0.01
0.001
POWER LOSS (W)
21

20V, 2.5A SWITCHER+
V IN
12V
47µF
PVIN
INTVCC
TTHERMAL LIMIT
TMONITOR
PGND
BOOST
SW
FB
IMONITOR
1.5µH
F SW = 2MHz
47µF
V OUT
0.8V @ 2.5A
The LTC ® 3626 SWITCHER+ is the first member of a new switcher family featuring programmable input and output
current limits, as well as on-chip die temperature monitoring with programmable thermal shutdown. These features
provide enhanced system level protection, control and real time status readings. Plus, its unique controlled on-time
architecture is ideal for high step-down ratios where high switching frequencies and fast transient response are essential.
The LTC3626 combines up to 3MHz switching with a small, compact solution footprint.
Features
Programmable Input & Output Current Limits and
Monitoring with Die Temp Sensing
• 2.6V to 20V Input Voltage
• Wide Output Voltage Range:
0.6V to 97%VIN • 95% Efficient
• Up to 2.5A Output Current
- Average Input and Output Current
Monitoring (IMONIN, IMONOUT) - Programmable Average Input/Output
Current Limit
- Die Temp Monitor and Programmable
Limit (TSET)
Measured Output Current Error (%)
Output Current Monitor Error
5
4
3
2
1
0
–1
–2
–3
–4
–5
1
TA = 85°C
TA = 25°C
TA = –40°C
1.25 1.5 1.75 2 2.25 2.5
Output Current (A)
Info & Free Samples
www.linear.com/product/LTC3626
1-800-4-LINEAR
cds.linear.com/docs/Design%20Note/dn511.pdf
, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks and Switcher+ is a trademark of Linear
Technology Corporation. All other trademarks are the property
of their respective owners.

LTC3639
High Efficiency, 150V
100mA Synchronous Step-Down Regulator
FEATURES DESCRIPTION
n Wide Operating Input Voltage Range: 4V to 150V
n Synchronous Operation for Highest Efficiency
n Internal High Side and Low Side Power MOSFETs
n No Compensation Required
n Adjustable 10mA to 100mA Maximum Output Current
n Low Dropout Operation: 100% Duty Cycle
n Low Quiescent Current: 12µA
n Wide Output Range: 0.8V to V IN
n 0.8V ±1% Feedback Voltage Reference
n Precise RUN Pin Threshold
n Internal or External Soft-Start
n Programmable 1.8V, 3.3V, 5V or Adjustable Output
n Few External Components Required
n Programmable Input Overvoltage Lockout
n Thermally Enhanced High Voltage MSOP Package
APPLICATIONS
n Industrial Control Supplies
n Medical Devices
n Distributed Power Systems
n Portable Instruments
n Battery-Operated Devices
n Automotive
n Avionics
SW
V IN
FBO
V PRG2
V PRG1
GND
1
3
5
6
7
8
TOP VIEW
17
GND
16
14
12
11
10
9
MSE PACKAGE
VARIATION: MSE16 (12)
16-LEAD PLASTIC MSOP
LTC3639EMSE
LTC3639IMSE
LTC3639HMSE
LTC3639MPMSE
GND
RUN
OVLO
I SET
SS
V FB
5V to 150V Input to 5V Output, 100mA Step-Down Regulator
VIN
5V TO 150V
1µF
200V
VIN SW
LTC3639
RUN VFB
OVLO SS
VPRG2 VPRG1 GND
Switching Regulators—Monolithic
he LTC ® 3639 is a high efficiency step-down DC/DC regulator with
internal high side and synchronous power switches that draws only
12μA typical DC supply current while maintaining a regulated output
voltage at no load.
The LTC3639 can supply up to 100mA load current and features
a programmable peak current limit that provides a simple method
for optimizing efficiency and for reducing output ripple and
component size. The LTC3639’s combination of Burst Mode ®
operation, integrated power switches, low quiescent current, and
programmable peak current limit provides high efficiency over a
broad range of load currents.
With its wide input range of 4V to 150V and programmable
overvoltage lockout, the LTC3639 is a robust regulator suited for
regulating from a wide variety of power sources. Additionally, the
LTC3639 includes a precise run threshold and soft-start feature
to guarantee that the power system start-up is well-controlled in
any environment. A feedback comparator output enables multiple
LTC3639s to be connected in parallel for higher current applications.
The LTC3639 is available in a thermally enhanced high voltagecapable
16-lead MSE package with four missing pins.
470µH
3639 TA01a
Efficiency and Power Loss vs Load Current
EFFICIENCY (%)
100
90
80
VOUT = 5V EFFICIENCY
70
1000
60
50
40
VIN = 12V
VIN = 36V
VIN = 72V
VIN = 150V
100
30
20
POWER LOSS
10
10
0
1
0.1 1
10 100
LOAD CURRENT (mA)
10µF
V OUT
5V
100mA
3639 TA01b
POWER LOSS (mW)
23

LTC3859AL
Triple Output, Buck/Buck/Boost
Synchronous Controller with 28µA Burst Mode I Q
FEATURES DESCRIPTION
n Low Operating I Q: 28μA (One Channel On)
n Dual Buck Plus Single Boost Synchronous Controllers
n Outputs Remain in Regulation Through Cold Crank Down to 2.5V
n Wide Bias Input Voltage Range: 4.5V to 38V
n Buck Output Voltage Range: 0.8V ≤ V OUT ≤ 24V
n Boost Output Voltage Up to 60V
n R SENSE or DCR Current Sensing
n 100% Duty Cycle for Boost Synchronous MOSFET Even in
Burst Mode ® Operation
n Phase-Lockable Frequency (75kHz to 850kHz)
n Programmable Fixed Frequency (50kHz to 900kHz)
n Selectable Continuous, Pulse-Skipping or Low Ripple Burst
Mode Operation at Light Loads
n Very Low Buck Dropout Operation: 99% Duty Cycle
n Adjustable Output Voltage Soft-Start or Tracking
n Low Shutdown I Q: 10μA
n Small 38-Lead 5mm × 7mm QFN and TSSOP Packages
APPLICATIONS
n Automotive Always-On and Start-Stop Systems
n Battery Operated Digital Devices
n Distributed DC Power Systems
n Multioutput Buck-Boost Applications
TOP VIEW
ITH1 1
38
VFB1 2
37
SENSE1 3
36
4
35
5
34
6
33
7
32
8
31
9
30
10
29
11
28
12
27
13
26
14
25
15
24
16
23
17
22
18
21
19
20
FE PACKAGE
38-LEAD PLASTIC TSSOP
+
SENSE1 –
FREQ
PLLIN/MODE
SS3
SENSE3 +
SENSE3 –
VFB3 ITH3 SGND
RUN1
RUN2
RUN3
SENSE2 –
SENSE2 +
TRACK/SS1
PGOOD1
TG1
SW1
BOOST1
BG1
SW3
TG3
BOOST3
39
PGND
BG3
VBIAS EXTVCC INTVCC BG2
BOOST2
SW2
TG2
VFB2 OV3
ITH2 TRACK/SS2
FE PACKAGE
38-LEAD PLASTIC TSSOP
LTC3859ALEFE
LTC3859ALIFE
LTC3859ALHFE
LTC3859ALMPFE
24
FREQ 1
PLLIN/MODE 2
SS3 3
SENSE3 4
5
+
SENSE3 –
VFB3 6
ITH3 7
SGND 8
RUN1
RUN2
RUN3
SENSE2 –
9
10
11
12
VOUT3
REGULATED AT 10V WHEN VIN < 10V
FOLLOWS VIN WHEN VIN > 10V
V IN
2.5V TO 38V
(START-UP ABOVE 5V)
SENSE1 –
SENSE1 +
TOP VIEW
38 37 36 35 34 33 32
39
PGND
13 14 15 16 17 18 19
SENSE2 +
VFB1 ITH1 TRACK/SS1
PGOOD1
TG1
VFB2
ITH2 TRACK/SS2
OV3
TG2
SW2
220µF
31 SW1
29 BG1
28 SW3
27 TG3
25 BG3
2mΩ
30 BOOST1
26 BOOST3
24 VBIAS
23 EXTVCC 22 INTVCC 21 BG2
20 BOOST2
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
38-LEAD (5mm × 7mm) PLASTIC QFN
LTC3859ALEUHF
LTC3859ALIUHF
LTC3859ALHUHF
LTC3859ALMPUHF
Switching Regulators—Controllers
The LTC ® 3859AL is a high performance triple output (buck/buck/boost)
synchronous DC/DC switching regulator controller that drives all
N-channel power MOSFET stages. Constant frequency current
mode architecture allows a phase-lockable switching frequency
of up to 850kHz. The LTC3859AL operates from a wide 4.5V to
38V input supply range. When biased from the output of the boost
converter or another auxiliary supply, the LTC3859AL can operate
from an input supply as low as 2.5V after start-up.
The 28μA no-load quiescent current extends operating runtime in
battery powered systems. OPTI-LOOP compensation allows the
transient response to be optimized over a wide range of output
capacitance and ESR values. The LTC3859AL features a precision
0.8V reference for the bucks, 1.2V reference for the boost and a
power good output indicator. The PLLIN/MODE pin selects among
Burst Mode operation, pulse-skipping mode, or continuous inductor
current mode at light loads.
Compared to the LTC3859 and the LTC3859A, the LTC3859AL is
fully pin-compatible, but with lower Burst Mode operation IQ (28µA
with one channel on).
220µF
1.2µH
SW1, 2, 3
499k
4.7µF
0.1µF
68.1k
1µF
VFB3
TG3
BG3
LTC3859AL
SENSE3 –
SENSE3 +
SW1
SENSE1
INTVCC
BOOST1, 2, 3
ITH1, 2, 3
+
SENSE1 –
SW3 BG1
VFB1
RUN1, 2, 3
EXTVCC
0.1µF
TG2
SW2
BG2
TRACK/SS1, 2
SS3
VBIAS
PGND SGND
SENSE2+
SENSE2–
VFB2
3859al TA01a
V OUT1
4.9µH 6mΩ
Efficiency and Power Loss vs Load Current
EFFICIENCY (%)
Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6144194, 6177787, 6580258.
TG1
100
VIN = 12V
90
80
70
60
50
40
VOUT1 = BURST
EFFICIENCY
30
20
10
VOUT1 = BURST LOSS
0
0.0001 0.001 0.01 0.1 1
OUTPUT CURRENT (A)
68.1k
68.1k
357k
6.5µH 8mΩ
3859al TA01b
649k
10000
1000
100
10
1
0.1
10
POWER LOSS (mW)
V OUT1
5V
5A
220µF
V OUT2
8.5V
3A
68µF

LTC3863
60V Low I Q Inverting DC/DC Controller
FEATURES DESCRIPTION
n Wide Operating V IN Range: 3.5V to 60V
n Wide Negative V OUT Range: –0.4V to Beyond –150V
n Low Operating I Q = 70µA
n Strong High Voltage MOSFET Gate Driver
n Constant Frequency Current Mode Architecture
n Verified FMEA for Adjacent Pin Open/Short
n Selectable High Efficiency Burst Mode ® Operation or Pulse-
Skipping Mode at Light Loads
n Programmable Fixed Frequency: 50kHz to 850kHz
n Phase-Lockable Frequency: 75kHz to 750kHz
n Accurate Current Limit
n Programmable Soft-Start or Voltage Tracking
n Internal Soft-Start Guarantees Smooth Start-Up
n Low Shutdown I Q = 7µA
n Available in Small 12-Lead Thermally Enhanced MSOP and DFN
Packages
APPLICATIONS
n Industrial and Automotive Power Supplies
n Telecom Power Supplies
n Distributed Power Systems
PLLIN/MODE
FREQ
SGND
SS
VFB
ITH
1
2
3
4
5
6
TOP VIEW
13
PGND
12
11
10
9
8
7
Protected by U.S. Patents, including 5731694.
GATE
VIN
SENSE
CAP
RUN
VFBN
DE PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
LTC3863EMSE
LTC3863IMSE
LTC3863HMSE
LTC3863MPMSE
4.5V to 16V Input, –5V/1.7A Output, 350kHz Inverting Converter
350kHz
27nF
14.7k
61.9k
PLLIN/MODE
FREQ
SGND
SS
V FB
ITH
RUN
CAP
0.47µF
VIN
PLLIN/MODE
SS
SENSE
GATE
ITH LTC3863
FREQ
SGND
1
2
3
4
5
6
PGND
TOP VIEW
13
PGND
VFBN VFB 12
11
10
9
8
7
MSE PACKAGE
12-LEAD PLASTIC MSOP
LTC3863EDE
LTC3863IDE
LTC3863HDE
LTC3863MPDE
16mΩ
Si7129
Switching Regulators—Controllers
The LTC ® 3863 is a robust, inverting DC/DC PMOS controller
optimized for automotive and industrial applications. It drives a
P-channel power MOSFET to generate a negative output and
requires just a single inductor to complete the circuit. Output
voltages from –0.4V to –150V are typically achievable with higher
voltages possible, only limited by external components.
The LTC3863 offers excellent light load efficiency, drawing only
70μA quiescent current in a user programmable Burst Mode
operation. Its peak current mode, constant frequency PWM
architecture provides for good control of switching frequency and
output current limit. The switching frequency can be programmed
from 50kHz to 850kHz with an external resistor and can be
synchronized to an external clock from 75kHz to 750kHz.
The LTC3863 offers programmable soft-start or output tracking.
Safety features include overvoltage, overcurrent and short-circuit
protection including frequency foldback.
The LTC3863 is available in thermally enhanced 12-lead MSOP and
3mm × 4mm DFN packages.
10µF
25V
×2
B540C
10µH
68pF
GATE
V IN
SENSE
CAP
RUN
V FBN
+
511k
80.6k
3863 TA01a
100µF
20V
V IN
4.5V TO 16V
33µF
×2
EFFICIENCY (%)
+
90
80
70
60
50
40
30
20
10
0
0.002
150µF
16V
×2
V IN = 12V
VOUT = –5V
V OUT
–5V
1.7A
EFFICIENCY
Efficiency
PULSE-SKIPPING MODE
Burst Mode OPERATION
POWER LOSS
0
0.02 0.2 2
LOAD CURRENT (A)
3863 TA01b
9
8
7
6
5
4
3
2
1
POWER LOSS (W)
25

LTC3890-3
60V Low I Q, Dual, 2-Phase
Synchronous Step-Down DC/DC Controller
FEATURES DESCRIPTION
n Wide V IN Range: 4V to 60V (65V Abs Max)
n Low Operating I Q: 50µA (One Channel On)
n Wide Output Voltage Range: 0.8V ≤ V OUT ≤ 24V
n R SENSE or DCR Current Sensing
n Out-of-Phase Controllers Reduce Input Capacitance and Power
Supply Induced Noise
n Phase-Lockable Frequency (75kHz to 850kHz)
n Programmable Fixed Frequency (50kHz to 900kHz)
n Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode ® Operation at Light Loads
n Very Low Dropout Operation: 99% Duty Cycle
n Adjustable Output Voltage Soft-Start or Tracking
n Power Good Output Voltage Monitor
n Low Shutdown I Q:

The LTC ® 6957 is a dual output buffer/driver/logic translator, ideal for converting sine waves into low phase noise logic level signals.
The device converts any DC to 300MHz reference frequency into dual LVPECL, LVDS or CMOS outputs with exceptionally low
additive jitter (less than 200fs RMS total jitter). The LTC6957 also features a proprietary, selectable, input stage bandwidth-limiting
feature, which substantially improves the additive phase noise for slow slewing signals by up to 3dB to 4dB.
Features
Converts Sine Waves to Logic Levels with Lowest Additive Jitter
n Low Phase Noise Buffer/Driver
n Three Logic Output Types Available:
n LVPECL (LTC6957-1)
n LVDS (LTC6957-2)
n In-Phase CMOS (LTC6957-3)
n Complementary CMOS (LTC6957-4)
n Additive Jitter:

The LTC6957 includes input filtering with three narrowband settings in
addition to the full bandwidth limitation of the circuit design (Table 1).
For slow slewing signals (ie 400
High Low 125 to 400
Low High 40 to 125
High High 63 20 to 63 6.3 to 20 112 35 to 112 11 to 35 200 63 to 200 20 to 63 112 35 to 112 200 63 to 200

LTC6957-1/LTC6957-2/LTC6957-3/LTC6957-4
Low Phase Noise, Dual Output Buffer/Driver/
Logic Converter
FEATURES DESCRIPTION
n Low Phase Noise Buffer/Driver
n Optimized Conversion of Sine Wave Signals to Logic Levels
n Three Logic Output Types Available
– LVPECL
– LVDS
– CMOS
n Additive Jitter 45fsRMS (LTC6957-1)
n Frequency Range Up to 300MHz
n 3.15V to 3.45V Supply Operation
n Low Skew 3ps Typical
n Fully Specified from –40°C to 125°C
n 12-Lead MSOP and 3mm × 3mm DFN Packages
APPLICATIONS
n System Reference Frequency Distribution
n High Speed ADC, DAC, DDS Clock Driver
n Military and Secure Radio
n Low Noise Timing Trigger
n Broadband Wireless Transceiver
n High Speed Data Acquisition
n Medical Imaging
n Test and Measurement
LTC6957-1, LTC6957-2 LTC6957-3, LTC6957-4
PHASE NOISE (dBc/Hz)
–140
–145
–150
–155
–160
–165
100
TOP VIEW
1 12 SD1
2
11 OUT1
3
10
4
9
5
8
+
OUT1 –
OUT2 –
OUT2 +
FILTA
V
SD2
+
IN +
IN –
13
GND
GND
FILTB 6 7
DD PACKAGE
12-LEAD (3mm × 3mm) PLASTIC DFN
LTC6957IDD-1
LTC6957IDD-2
Additive Phase Noise at 100MHz
LTC6957-3
(CMOS)
SINGLE-ENDED SINE WAVE INPUT
AT +7dBm (500mVRMS)
FILTA = FILTB = GND
LTC6957-1 (LVPECL)
LTC6957-2 (LVDS)
LTC6957-4 (CMOS)
1k 10k 100k
OFFSET FREQUENCY (Hz)
69571234 TA01b
Protected by U.S. Patents, including 7969189 and 8319551.
1M
TOP VIEW
FILTA 1 12 SD1
V 2
11 VDD 3
10 OUT1
4
9 OUT2
5
8 GNDOUT
SD2
DD PACKAGE
12-LEAD (3mm × 3mm) PLASTIC DFN
+
IN +
IN –
13
GND
GND
FILTB 6 7
DD PACKAGE
12-LEAD (3mm × 3mm) PLASTIC DFN
LTC6957IDD-3
LTC6957IDD-4
OCXO
100MHz
+7dBm
SINE WAVE
Timing
The LTC ® 6957-1/LTC6957-2/LTC6957-3/LTC6957-4 is a family of
very low phase noise, dual output AC signal buffer/driver/logic level
translators. The input signal can be a sine wave or any logic level
(≤2V P-P). There are four members of the family that differ in their
output logic signal type as follows:
LTC6957-1: LVPECL Logic Outputs
LTC6957-2: LVDS Logic Outputs
LTC6957-3: CMOS Logic, In-Phase Outputs
LTC6957-4: CMOS Logic, Complementary Outputs
The LTC6957 will buffer and distribute any logic signal with minimal
additive noise, however, the part really excels at translating sine
wave signals to logic levels. The early amplifier stages have
selectable lowpass filtering to minimize the noise while still
amplifying the signal to increase its slew rate. This input stage
filtering/noise limiting is especially helpful in delivering the lowest
possible phase noise signal with slow slewing input signals such as
a typical 10MHz sine wave system reference.
FILTA
V +
IN +
IN –
GND
FILTB
50Ω
LTC6957-1, LTC6957-2 LTC6957-3, LTC6957-4
1
2
3
4
5
6
10nF
TOP VIEW
10nF
FILTA
FILTB
IN +
IN –
LTC6957
12
11
10
9
8
7
MS PACKAGE
12-LEAD PLASTIC MSOP
LTC6957IMS-1
LTC6957HMS-1
LTC6957IMS-2
LTC6957HMS-2
SD1
OUT1 +
OUT1 –
OUT2 –
OUT2 +
SD2
3.3V
0.1µF
V +
GND
FILTA
V +
IN +
IN –
GND
FILTB
SD1
SD2
1
2
3
4
5
6
OUT1
OUT2
6957 TA01a
TOP VIEW
12
11
10
9
8
7
MS PACKAGE
12-LEAD PLASTIC MSOP
LTC6957IMS-3
LTC6957HMS-3
LTC6957IMS-4
LTC6957HMS-4
SD1
V DD
OUT1
OUT2
GNDOUT
SD2
TO PLL CHIPS
OR SYSTEM
SAMPLING CLOCKS
29

LTC6995-1/LTC6995-2
TimerBlox: Long Timer, Low Frequency Oscillator
FEATURES DESCRIPTION
n Period Range: 1ms to 9.5 Hours
n Timing Reset by Power-On or Reset Input
n Configured with 1 to 3 Resistors
n

Intelligent Systems
SoCKIT to Me!
Don’t Just Elevate, Integrate.
Arrow, Altera, and Linear Technology are pleased to offer an unprecedented opportunity for you
to learn about the new Altera SoC solutions during our global workshop series.
FIVE REASONS WHY USER-CUSTOMIZABLE
ARM-BASED SoCS ARE IDEAL:
> Reduce system power, cost, and board size by integrating
discrete processors and Digital Signal Processing (DSP)
functions into a single FPGA
> Improve system performance via high-bandwidth
interconnect between the processor and the FPGA
> Differentiate your end product by customizing in both
hardware and software
> Enhance system reliability with built-in error correction
code (ECC) and memory protection that protect your
system against potential hardware or software errors
> Develop ARM compatible software with unmatched target
visibility, control, and productivity using Altera’s exclusive
FPGA-adaptive debugging
EMBEDDED LINUX FOR SoC BOARDS
> One-stop shop for SoC Linux
> Get source and tools to jump start your
Linux project
> Engage with the SoC Linux community
Start your SoC Linux project here!
www.RocketBoards.org
arrow.com
EACH SoCKIT FEATURES:
> Altera Cyclone V SoC with Dual ARM ® Cortex ® -A9
processors and 110K LEs
> High Speed Mezzanine Connector (HSMC) including
transceivers
> Two banks of low-power DDR3 memory
> MicroSD card and Ethernet 10/100/1000 interfaces
> Adjustable clock output by Silicon Labs
> Graphic LCD: 128 x 64 (SPI Interface)
> VGA and Audio connections
> USB 2.0 OTG (Full Speed) and USB to UART connections
> 3-Axis digital accelerometer and temp sensor
> User’s manual/start-up guide,
USB and power cables

GET YOUR FREE
Demo Board for Products Listed in this Catalog!
Visit www.arrownac.com/ltcnewproducts to request
your free demo board today or contact your local
Arrow sales representative at 800-833-3557.
www.arrownac.com/ltcnewproducts