
Fairchild Semiconductor
DESCRIPTION
The SG6108 controller is designed for desktop PC switching mode power supplies. It provides everything
necessary to monitor and control the output of the power supply. Remote ON/OFF control, power good circuitry, over-voltage protection, over-power protection, and over-current protection are all included. The SG6108 directly senses all the output rails for over voltage conditions without requiring external dividers.
FEATURES
PC half-bridge (or 494) power supply supervisor + PWM
Highly Integrated and Few external components required
Over voltage protection 3.3V/5V/12V (two 12V)
Under voltage protection 3.3V/5V/12V (two 12V)
Under voltage protection for –12V and/or –5V
Over current protection 3.3V/5V/12V (two 12V)
Over power protection
Short circuit protection
Power-down warning circuitry
Power good circuitry
Delay time for PSON and PG signals
Remote ON/OFF function
On-Chip oscillator and Error amplifier
Latching PWM for cycle-by-cycle switching
Soft-start
Maximum 48% duty cycle
APPLICATIONS
Switching mode power supplies for computers such as ATX, NLX, and SFX (micro-ATX).