PS257 - 4-Channel Secondary Monitoring IC

SiTI

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Datasheet Details

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

PS257 Product details

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".It adjusts the FAN speed according to the sensed temperature and generates "over-temperature pro

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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Published: Jul 6, 2016 |