DESCRIPTION

The SD6109 is a power management IC for computers. It integrates various monitoring functions and protections, such as AC fail detection, over power protection, negative voltage protection, over/under voltage protection and provides power down signal for PG.

Built-in high precision oscillator provides accurate protection and delay time for monitoring. And internal regulators TL431 are used for stable output 3.3V and 5V, with few peripheral components. Built-in soft-start decreases stress of transformer against saturation. SD6109 used for pull-push or half-bridge power system with high efficiency and stability.

FEATURES

* Advanced Bi-CMOS process.

*4KV HBM ESD protection

* Bipolar structure adopted in Shunt regulators TL431, with high reliability

* Over voltage protection for 3.3V/5V/12V

* Under voltage protection for 3.3V/±5V/±12V

* Over power protection

* Short circuit protection

* AC-input under voltage protection

* PG Circuit

* PSON for remote control

* Delay time for PSON or PG signals

* Two bypass regulators for 3.3V and 5V- voltage stability

* Soft start and maximum 93% duty cycle

APPLICATIONS

* Switching mode power supply for

computers.