This part is a kind of semiconductor called OB2262.
Function of this product has 15W Adapter Module Design.
Manufacturers : On-Bright
Image and pinout :
Some of the text within the PDF file :
OB2262 Application Note 15W Adapter Module Design with OB2262 (Preliminary Release) Key Features Low component count Standby Power ＜ 0.2W Audio noise free operation OCP with line compensation Version v.1.0 Date 2005-6-23 Revision History Preliminary Release © On-Bright Electronics Confidential OB_DOC_AN_2262A1 OB2262 Application Note Index Adaptor Module Specification . 3 1.1. Input Characteristic .. 3 1.2. Output Characteristic [ ... ]
OB2262 PDF Datasheet Download
