Hs8109 is a PWM switching power supply control IC, which is mainly used for the switching power supply of desktop PC (personal computer). 

Hs8109 can provide all control and protection functions of PC power supply: PWM pulse width modulation and push-pull output, with protection functions such as overvoltage, undervoltage, overcurrent, overload, AC undervoltage, etc. With accurate timing and few external devices, it is the best choice for the new generation of high-performance ATX power supply.

◆ Few external devices are required

◆ PSON control switch signal  

◆ Soft-start  

◆ Power supply general signal(PG) 

◆ PSON and PG signal delay

◆ Hiccup protection circuit

◆ 3.3V/5V/12V Overvoltage protection

◆ 3.3V/±5V/±12V Undervoltage protection

◆ AC undervoltage protection

◆ PWM push pull output

◆ Overpower protection (OPP) and short-circuit protection

◆ Maximum 93% duty cycle

◆ Accurate on-chip oscillator and error amplification