This is one of the semiconductor types. This part name is WT7520.
This product has PC Power Supply PWM Cupervisor functions.
Manufacturers of product is Weltrend.
Image and pinout :
WT7520 PDF Datasheet
Some of the text files within the PDF file
Weltrend Semiconductor, Inc. WT7520 PC POWER SUPPLY PWM SUPERVISOR Data Sheet REV. 0.9 February 21, 2005 The information in this document is subject to change without notice. © Weltrend Semiconductor, Inc. All Rights Reserved. ·s¦Ë¥«¬ì¾Ç¤u·~¶é°Ï¤u·~ªF¤E¸ô 24 ¸¹ 2¼Ó 2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan TEL:886-3-5780241 FAX:886-3-5794278.5770419 Email:firstname.lastname@example.org WT7520 Data Sheet Rev. 0.90 GENERAL DESCRIPTION The WT7520 is a pulse–width modulation (PWM) control circuit with complete protection circuits for used in the SMPS (Switched Mode Power Supply). It contains various functions, which are Over Voltage Protection, Under Voltage Protection, Power Good Output (PGO), Remote On/Off control and etc. It can minimize external components of switching power supply systems in personal computer. Over Voltage Protection (OVP) mo [ … ]
Please refer to the file for details.