PFC / PWM Combination IC

Features

•Critical mode Power Factor Correction and PWM are combined : suitable for smaller power supply

•Internal start-up circuit with 500V rating and low frequency operation achieves 340mW input at no loadwhen PFC stops.

•Small Output Capacitance : Linearly reduced frequency for light load makes small ripple voltage.

•PFC stops below half load ( only for FA5533 )

•Vcc rating 28V allows noseries regulator for auxiliary winding to clamp Vcc voltage.

•Adjustable Soft Start time

•Auto-Restart Over Load Protection

•Auto-Restart Over-Voltage Protection for Vcc

•Adjustable Start-up sequence for PFC and PWM: easy Full Load Start-up

•Brown-Out below 70Vac and70Vdc of PFC Output

•16 pins package ( DIP/SO )

Usage : Notebook PC, LCD Monitor, LCD-TV, Laser Beam Printer etc.