Description

The FAN7680 is a complete output supervisory circuitry intended for use in the secondary side of a switched mode power supply. It provides over voltage protection (OVP), under voltage protection (UVP), fault protection output (FPO), remote On/Off (PSON), latch, internal delay circuits and power good signal generator to monitor and control the output of the switching power supply system.

Features

ï PC Power Supply Output Monitor Circuitry

ï Few External Components

ï Over Voltage Protection for 3.3V, 5V and 12V(Vcc) Outputs

ï Under Voltage Protection for 3.3V, 5V and 12V(Vcc Outputs with Delay Time

ï Fault Protection Output with Open Drain Output

ï Open Drain Power Good Output

ï 300ms Power Good Delay

ï 38ms PSONOn/Off Debounce

ï 73us Debounce

ï 2.3ms PSONto FPOTurn Off Delay

ï Latch Function Controlled by PSONand Protection Inputs

Typical Application

ï PC Power Supply