This part is a kind of semiconductor called SM7525.

Function of this product has Primary Side Feedback Controlling Switch.

Manufacturers : Sunmoon

Image and pinout :

Some of the text within the PDF file :

GOSTON ELECTRONICS CO.,LTD SM7525 Primary Side Feedback Controlling Switch v1.6 SM7525 Features z Topological structure support: Fly-back and low-cost BUCKBoost z Integrated 730V hybrid technology z Universal input voltage: 85Vac~265Vac z Constant current precision less than ±5% z Universal voltage compatible with 1~5W z SunMoon patented no auxiliary winding of primary side feedback control technology without coupler, 431 and other components. z No loop compensation z Built-in LEB circuit z Cycle by cycle peak current limiting z Output open/short circuit z Built-in soft-start z Built-in overvoltage protection and short circuit protection z Package：SOP8 Applications ‹ LED lighting driver General Description SM7525 is a primary side feedback controlling power chip used in off-line sma [ ... ]

SM7525 PDF Datasheet Download