This part is a kind of semiconductor called SY8008B.

Function of this product has Synchronous Step Down Regulator.

Manufacturers : Silergy

Image and pinout :

Some of the text within the PDF file :

平网-功率器件专业供应商 0755-83307717 www.ping-web.com sales@ping-web.com 谭小姐 SY8008A/SY8008B/SY8008C High Efficiency 1.5MHz, 0.6A/1A/1.2A Synchronous Step Down Regulator Preliminary Spec General Description The SY8008A, SY8008B and SY8008C are highefficiency 1.5MHz synchronous step-down DC-DC regulator ICs capable of delivering up to 1.2A output currents. The SY8008 family operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 1.5MHz switching frequency. This along with small SOT23/TSOT-23 footprint provides small PCB area application. Features • low Rds(on) for inter [ ... ]

SY8008B PDF Datasheet Download