This part is a kind of semiconductor called BA9741F.

Function of this product has Step-down Switching Regulators.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

Technical Note Large Current External FET Controller T ype Switching Regulators Dual-output Step-up, Negative Voltage, Step-down Switching Regulators (Controller type) BA9743AFV, BA9744FV, BA9741F, BA9741FS NNoo.1.131002288EECBTT1100 www.rohm.com © 20113 RROOHHMMCCoo..,,LLttdd..AAlll rriigghhttss rreesseerrvveedd.. 1/16 22001113..0043-- RReevv..BC BA9743AFV, BA9744FV, BA9741F/FS  Technical Note  www..rroohhmm..ccoomm ©© 22001113 RROOHHMM CCoo..,, LLttdd.. AAllll rriigghhttss rreesseerrvveedd.. 2/16 22001131.0.034- -RReevv..CB BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com © 20113 RROOHHMMCCoo..,,LLttdd..AAlllrrigighhtstsrreesseerrvveedd.. 3/16 20113.043 -RReevv..BC BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com © 20113 RROOHHMM [ ... ]

BA9741F PDF Datasheet Download