5W Stereo Audio Amplifier Project Based On BA5406


5W Stereo Audio Amplifier project based on BA5406 IC which is Β suitable for application like stereo radio cassette player, stereo components systems etc.

The Heart of the project, BA5406 is a dual OTL monolithic power IC with two built-in, high output speaker amplifier circuits. High output of 5WΓ—2 can be produced when VCC=12 V and RL=3Ω, and 2.8 WΓ—2 when VCC=9V and RL=3Ω. The BA5406, which uses a high allowable power dissipation package, has a simple heat-sink design.

5W Stereo Audio Amplifier Schemetic


Good low voltage characteristics (Operation from Vcc=5 V)
Ripple filter (6pin) also can be used as muting pin (Make 6pin GND potential)
Small thermal resistance package and simple heat-sink design
Power supply 5 to 12 VDC
Output – 5 W + 5W, 3 Ω
Input resistance – 100 KΩ


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