This part is a kind of semiconductor called ADP3208D.

Function of this product has Synchronous Buck Controller.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

ADP3208D 7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller The ADP3208D is a highly efficient, multiphase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3208D is optimized for converting the notebook battery voltage into the core supply voltage required by high performance Intel processors. An internal 7−bit DAC is used to read a VID code directly from the processor and to set the CPU core voltage to a value within the range of 0.3 V to 1.5 V. The phase relationship of the output signals ensures interleaved 2−phase operation. The ADP3208D uses a multi −mode architecture run at a programmable switching frequency and optimized for efficiency depending on the output current requirement. The ADP3208D swit [ ... ]

ADP3208D PDF Datasheet Download