Thursday, April 11, 2013

4 x 25 W CAR AMPLIFIER TDA7381 SCHEMATIC DIAGRAM

4 x 25 W CAR AMPLIFIER TDA7381 SCHEMATIC DIAGRAM



The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. You you can also use this circuit for other purposes. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors.



The extremely reduced components count allows very compact sets. The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during Car- Radio assembly and wiring in the car.



Absolute maximum ratings of IC TDA7295 IC



  • Operating supply voltage = 18 V
  • DC supply voltage = 28 V
  • Peak supply voltage (t = 50 ms) = 50 V
  • Output peak current Repetitive (duty cycle 10 % at f = 10 Hz) = 3 A
  • Output peak current Non repetitive (t = 100 µs) = 4A
  • Power dissipation, (Tcase = 70 °C) = 80 W
  • Junction temperature = 150 °C
  • Storage temperature = -40 to 150 °C


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