This part is a kind of semiconductor called AP2172.

Function of this product has 1A DUAL CHANNEL CURRENT-LIMITED POWER SWITCH.

Manufacturers : Diodes Incorporated

Image and pinout :

Some of the text within the PDF file :

AP2162/AP2172 1A DUAL CHANNEL CURRENT-LIMITED POWER SWI TCH Features • Dual USB port power switches • Over-current and thermal protection • 1.5A accurate current limiting • Rev erse Current Blocking • 11 5mΩ on-resistance • Input voltage range: 2.7V – 5.5V • 0.6ms typical rise time • Very low shutdown current: 1uA (max) • Fault report (FLG) with blanking time (7ms typ) • ESD protection: 4.5KV HBM, 350V MM • Active high (AP2172) or active low (AP2162) enable • Ambient temperature range -40ºC to 85°C • SOP-8L and MSOP-8L-EP (Exposed Pad): Available in “Green” Molding Compound (No Br, Sb) • Lead Free Finish / RoHS Compliant (Note 1) • UL Recognized, File Number E322375 • IEC60950-1 CB Scheme Certified Description The AP2162 and AP2172 are integrated [ ... ]

AP2172 PDF Datasheet Download