This part is a kind of semiconductor called LZC811.

Function of this product has PSR & PFC LED Driver Controller.

Manufacturers : LOZEN TECHNOLOGY

Image and pinout :

Some of the text within the PDF file :

LZC811 PSR & PFC LED Driver Controller General Description Fly-back topology The LZC811 is a single-power stage, • Real-Current control to meet accurate isolated and primary side offline LED lighting output current regulator which achieves high power factor. • Very less components The proprietary real-current control method • Programmable input AC voltage can control the LED current accurately from compensation the primary side information. It can • Leading Edge Blanking on CS/FB pin significantly simplify the LED lighting system • Protection Features design by eliminating the secondary side Building in hysteresis OTP feedback components and the opto-coupler. VDD over voltage protection The LZC811 integrates active power factor Cycle by cycle current limiting on [ ... ]

LZC811 PDF Datasheet Download