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ITT
ITT TBA800
5 WATT AUDIO AMPLIFIER
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SEMICONDUCTORS
5 WATT AUDIO AMPLIFIER
• Usable over 5 - 30V supply voltage range.
• Output currents up to 1 amp.
• High efficiency 70 % at 4 watts output power
.. Low distortion.
The TBA 800 is a monolithic class-B power
integrated circuit. It is available in a plastic
power package similar to TO-116 with 12-pins.
These are quad-in-line formed suitable for low
cost applications. The package contains heat
tabs which allow a power output of 2.5 watts
without extra heat sinking. If a suitable extra
heat sink e.g. copper area on P.C. board, a
power output of 5 watts is possible.
Fig. 1-Package-Power tab plastic dual in-line.
Dimensions in mm.
Maximum Ratings
(All voltages with reference to pins 9 and 10)
V" V3 Supply voltage ........... 30V Max
Peak output cu rrent
I" a) (non periodic) ........ 2A .Max
1,2 b) periodic ............. 1A Max
Total dissipation
PlOt a) at Tamb.=70°C ...... 1W Max
Ptot
Tj
Ts
b) at Ttab=75°C ....... 5W Max
Junction temperature .•. , 150°C Max
Storage temperature
range ............ -25 to +85°C
ELECTRICAL CHARACTERISTICS
(at Vcc=24V, Rload=16fl, f=1KHz
Tamb.=25°C in circuit Fig. 1)
Min Typ Max Units
V" Output Quiescent
voltage ......... 11 12 13 V
1,+1, Quiescent current. 8.5 20 mA
Input bias current ..
fLA
Po Output power ..... 5 W
at THD=10%
Po at THD=2% 4 W
V. Input signal (AC)
for 5W output ... 70
mV
r3 Input resistance ... 1 5 mfl
Fig. 2-Test circuit for characteristics.
Av
Min Typ Max Units
Frequency range
.3dB points .... 35-20,000 H;;
Total harmonic
distortion
at Pout=0.05-2.5W 0.5 %
Voltage gain
a) with feedback
as in Fig. 2 ... 40 43 46 dB
b) open loop .... 74 dB
Noise voltage at
Input ........... 10 fLY
Efficiency at
Pout=4W ........ 70
Thermal resistance
a) Junction-
Ambient....... 80
b) Junction-Tab .. 15
8-70