FAN4800CU - Fairchild Semiconductor

FAN4800CU PFC/PWM Controller Combination

The highly integrated FAN4800AU/CU parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections and compensation. They are available in 16-pin DIP and SOP packages. The PWM can be used in current or Voltage Mode. In Voltage Mode, feed-forward from the PFC output .

Features

 Pin-to-Pin Compatible with ML4800, FAN4800, CM6800, and CM6800A
 PWM Configurable for Current-Mode or Feed-Forward Voltage-Mode Operation
 Internally Synchronized Leading-Edge PFC and Trailing-Edge PWM in One IC
 Low Operating Current
 Innovative Switching-Charge Multiplier Divider
 Average-Current-Mode for Input-Current Shaping
 PFC Over-Voltage and Under-Voltage Protections
 PFC Feedback Open-Loop Protection
 Cycle-by-Cycle Current Limiting for PFC/PWM
 Power-on Sequence Control and Soft-Start
 Line Sagging Protection
 fRTCT=4
•fPFC=4
•fPWM for FAN4800AU
 fRTCT=4
•fPFC=2
•fPWM for .