LA4440 is a dual channel audio amplifier IC. It can be used in two modes; one is Stereo amplifier and another Bridge amplifier mode. The LA4440 is a monolithic linear IC from Sanyo. Here I give the both schema mode of amplifier using IC LA4440.
When the IC LA4440 is Stereo mode in the schema, its output power is 6w+6w. In stereo mode use two pieces speaker of 2Ωto8Ω.
When the IC LA4440 is Stereo mode in the schema, its output power is 6w+6w. In stereo mode use two pieces speaker of 2Ωto8Ω.
LA4440 Stereo Amplifier Circuit Diagram
C10 is filter capacitor used to reduce the ripple of supply voltage. Don’t decrease the value of capacitor C6&C7 less than 100uF, 10v, it may causes of the output at low frequencies goes lower. The pin-6 of LA4440 amplifier schema is audio input pin; it used in stereo amplifier mode but in bridge mode it is grounded. C8&C9 are polyester film capacitor used to preventing oscillation, and R1&R2 used for the same reason as filter resistor. Though the maximum supply voltage for both schema of amplifier is 18V but we recommend to use a 12V,3A power supply. Use a good quality heat sink with LA4440.
I think here you see little comparison between stereo and bridge amplifier of LA4440. If you want to make this amplifier project, then I recommend you the bridge one. I think it is ideal for a beginner. And I love its wattage rather than Stereo mode. There is also a possibilities as I say, make two copies of schema of bridge amplifier for stereo, it will give you 19w+19w of audio power output.
i have a la4440 ic 80 watt.. i want to be it 120 watt.. how i do it tell me plz..
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