| LED DRIVERS | L - Arrow Electronics

5 2 L E D D R I V E R S : ICsLow-Power (20 mA to 100 mA) Multi-Display LEDDrivers—Inductor BasedMulti-display inductor-based white LED drivers are capable of driving up to 20 white LEDs from asingle-cell Li-Ion/Polymer input. Key features include high-voltage internal power switches, internalSchottky diodes, adjustable switching frequency, DC dimming control, open LED protection, andoptimized internal compensation. They are ideal solutions for multipanel LCD backlight applicationsor space-constrained portable applications such as cellular phones, PDAs, and digital cameras.FeaturesLT3486• Drives up to 16 white LEDs at25 mA from a 3.6V supply• Drives up to 16 white LEDs at100 mA from a 12V supply• True Color PWM dimming delivers constantcolor with 1000:1 dimming range• Two independent step-up DC/DCconverters with independent dimmingand shutdown• Wide input voltage range: 2.5V to 24V• Programmable constant switchingfrequency: 200 kHz to 2 MHz• Tiny 10-lead (5 mm x 3 mm x 0.75 mm)DFN-16 package or TSSOP-16EpackageBenefits• Ideal for TFT-LCD screens up to 6"in handhelds• Ideal for automotive displays withTFT-LCD screens up to 10"• Eliminates the color shift normallyassociated with LED current dimming• 1000:1 dimming ratio is required onmany automotive and handheld displays• Ideal for applications with multiple screens• Can be used with single-/dual-cellLi-Ion/Polymer to automotive/industrialsupply voltages• Minimizes switching noise and size ofexternal components• Minimizes solution footprint/cost whileenhancing system reliabilityApplications• Notebook PCdisplays• LED camera lightfor cell phones• Car dashboardlighting• Avionics displaysProduct SpecificationsPartNumberTypeDimmingTypeNumberof LEDs/StringNumber ofStringsLT3497 Dual LED driver 250:1 PWM 6 x 20 mA 2LT3466-1LED driver and boostconverterConfigurationDual seriesstringsInputVoltage(VDC)OutputVoltage(VDC)OutputCurrent (mA) †PeakEfficiency(%)DiagnosticCapabilities*Interface2.5-10 32 2 x 300 78 TSD PWMDC/PWM 10 x 25 mA 1 Series 2.7-24 39.4 2 x 320 84 TSD PWMLT3466 Dual LED driver DC/PWM 10 x 25 mA 2LTC3452Synchronous buck-boostLED driverDC/PWM5 x 20 mA +1 x 200 mALT3486 Dual LED driver 1000:1 PWM 10 x 100 mA 2LT3496 Triple LED driver 3000: 1 PWM 7 x .5A 3LT3498LED driver plusOLED powerDC/PWM10 x 25 mA+ OLEDDual seriesstrings2.7-24 39.4 2 x 320 84 TSD PWM1 Parallel 2.7-5.5 4.5 1A 88 TSD PWM2Dual seriesstringsThree seriesstringSingle LEDstring OLED2.7-24 35.4 2 x 1.3A 85 TSD PWM3-30 45 21 x 500 95 TSD PWM2.5-12 32 10 x 25 + 30 75 TSD PWMMARKETS LEGEND COMMERCIAL LIGHTING FLASHLIGHTS TRANSPORTATION BACKLIGHTING SIGNAGE*Diagnostic capabilities: TSD: Thermal shutdown† Switch currentLT3486—Dual 1.3A White LED Step-Up Converter with 1000:1 Dimming RangeMarkets12V (TYP)9V TO 15V10 µF10 µH10 µHLUXEONLEDsLXCL-PWF1IN5VD11 µF D22.2 µF2.2 µFV 100 100 mA SW1 SW2mAOFF ONOVP1CTRL1SHDNOVP2CTRL2V INLT3486 REFPWM1PWM20.1 µFFB1FB2LUXEONLEDsLXCL-PWF1DIMMINGINPUT 1PWMFREQ1 kHz100kQ12Ω3.65k2.2 nF21.5kV INV C1 R T V C2GND3.65k22pF2.2 nF Q22ΩDIMMINGINPUT 2PWMFREQ1 kHz100kArrow Electronics Lighting Group1.888.9LIGHT1http://lighting.arrow.com