This part is a kind of semiconductor called PS224B.

Function of this product has 4-Channel Secondary Monitoring IC.

Manufacturers : SiTI

Image and pinout :

Some of the text within the PDF file :

PS224B Version : A.001 Issue Date : 2007/05/17 File Name : SP-PS224B-A.001.doc Total Pages : 10 4-Channel Secondary Monitoring IC 新竹市科學園區展業一路 9 號 7 樓之 1 SILICON TOUCH TECHNOLOGY INC. 9-7F-1, Prosperity Road I, Science Based Industrial Park, Hsin-Chu, Taiwan 300, R.O.C. Tel：886-3-5645656 Fax：886-3-5645626 點晶科技股份有限公司 SILICON TOUCH TECHNOLOGY INC. PS224B 4-Channel Secondary Monitoring IC PS224B General Description PS224B is specially designed for switching power supply system. Four important functions of PS224B are the followings: over-voltage protection, over-current protection, under-voltage protection and power good signal generating. OVP/UVP (Over-Voltage/Under-Voltage Protection) monitors 3.3V, 5V and dual 12V to protect our [ ... ]

PS224B PDF Datasheet Download