CAR STEREO AMPLIFIER CIRCUIT

1. Here is the circuit of a car stereo amplifier based on TDA1553. TDA1553 is a monolithic Class-B audio amplifier which contains 2 x 22 watt amplifiers in bridge tied load configuration.
2. The amplifier operates from 12V DC and is developed intentionaly for car audio applications.
3. The IC also has a load of good features like short circuit protection, load dump protection, reverse polarity protection, loud speaker protection etc.
4. In the circuit , C5 and C4 are input decoupling capacitors while C3 sets the delay time for loud speaker protection.
5. C1 and C2 are power supply filter capacitors.

   
   

   
   

   
   

   
   

   NOTES:
   

   • Assemble the circuit on a good quality PCB.
   • Use 12V DC for powering the circuit.
   • The circuit can deliver 22W per channel into 4 ohm speakers.
   • Fit the IC with a proper heat sink.