This part is a kind of semiconductor called TPS51225.

Function of this product has Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs (Rev. B).

Manufacturers : Texas Instruments

Image and pinout :

TPS51225 image and datasheet pinout

Some of the text within the PDF file :

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TPS51225 PDF Datasheet Download

2017/06/20 11:28 2017/06/20 11:28