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PS257 - 4-Channel Secondary Monitoring IC

Description

PS257 is designed for monitoring a switching power supply (S.P.S.), especially for desktop ATX system.

It protects the S.P.S.

and PC from over voltage, under voltage, over current, short circuit and over temperature status.

Features

  • z Over-Voltage/Under-Voltage Protection (OVP & UVP) and lock out It monitors 3.3V, 5V, -12V and dual +12V. FPO/ goes to high and latch-up when one of these supply voltages exceeds their normal operation voltage range. z Over Current Protection (OCP) and lock out It monitors 3.3V, 5V and dual +12V. FPO/ goes to high and latch-up when one of these supply currents exceeds their normal operation current range. z PGO (Power Good Output) signal generationIt generates PGO to motherboard according to th.

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Datasheet Details

Part number PS257
Manufacturer SiTI
File Size 309.59 KB
Description 4-Channel Secondary Monitoring IC
Datasheet download datasheet PS257 Datasheet

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Other Datasheets by SiTI

Part Number Description
PS252C 2-Channel Secondary Monitoring IC
PS252C1 2-Channel Secondary Monitoring IC
PS25A 3-Channel Secondary Monitoring IC
PS222L 3-Channel Secondary Monitoring IC
PS222S 3-Channel Secondary Monitoring IC

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PS257 Version : PRE.005 Issue Date : 2012/02/20 File Name : SP-PS257-PRE.005.doc Total Pages : 14 4-Channel Secondary Monitoring IC with Fan Control 9 7 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 General Description PS257 PS257 is designed for monitoring a switching power supply (S.P.S.), especially for desktop ATX system. It protects the S.P.S. and PC from over voltage, under voltage, over current, short circuit and over temperature status. It monitors dual +12V, 5V, 3.3V and -12V DC supply channels. PS257 also provides a FAN drive module with two control modes - "step control mode" and "OP-amp control mode".
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