This part is a kind of semiconductor called AP8022.

Function of this product has OFF LINE SMPS PRIMARY SWITCHER GREEN POWER.

Manufacturers : AiT Semiconductor

Image and pinout :

Some of the text within the PDF file :

AiT Semiconductor Inc. www.ait-ic.com OFF LINE SMPS PRIMARY SWITCHER GREEN POWER AP8022 DESCRIPTION The AP8022 combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip. Typical Power Capability: Type European (195-265 Vac) US (85-265 Vac) SOP8 12W 7W DIP8 20W 12W FEATURES         85v to 265v wide range AC voltage input A 700v MOSFET on the same silicon chip Auto start up with high voltage current source PWM with current mode control 9v to 38v wide range VCC voltage Fixed 60KHz switching frequency Automatic skip cycle mode in low load condition. Over temperature, over current and over voltage protection Auxiliary under voltage lockout with hysteresis Available in SOP8 and DIP8 Package The AP8022 is available in S [ ... ]

AP8022 PDF Datasheet Download