PS257 Datasheet - SiTI

PS257 4-Channel Secondary Monitoring IC

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 a.

PS257 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. F

PS257-SiTI.pdf