This part is a kind of semiconductor called AP2952.
Function of this product has 18V Synchronous Rectified Step-Down Converter.
Manufacturers : Chipown
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AP2952 Description The AP2952 is a monolithic synchronous buck regulator. The device integrates 130mΩ MOSFETS that provide 2A continuous load current over a wide operating input voltage of 4.75V to 18V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply current drops below 1μA. This device, available in an 8-pin SOP package, provides a very compact system solution with minimal reliance on external components. Applications Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers Chipown 2A, 18V Synchronous Rectified Step-Down Converter Features 2A Output Current Wide [ ... ]