This part is a kind of semiconductor called CM8600C.

Function of this product has 3W Mono Class AB Audio Amplifier.

Manufacturers : ccmic

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Some of the text within the PDF file :

CM8600C 3W Mono Class AB Audio Amplifier General Description: CM8600C is an audio amplifier of class AB . The CM8600C is unity-gain stable and can be configured by external gain-setting resistors, It features a low-power consumption shutdown mode with very low shutdown current, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on and turn-off. Features: 1. 2. 3. 4. 5. 6. Power output at4.2 Vsupply, 4Ω load, THD+N<10%，is 1.6W .. Power output at 5V supply, 8Ω load, THD+N<10%，is 1.5W. Operating supply voltage: VDD =1.8V~5.5V。 Typical shutdown current: 0.2uA。 Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions SOP 8 packages. Electrical Characteristics: Typical Symbol Parameter Quiescent [ ... ]

CM8600C PDF Datasheet Download