FAN4801S Datasheet (PDF) Download
Fairchild Semiconductor
FAN4801S

Overview

The highly integrated FAN4800AS/CS/01S/02S parts are specially designed for power supplies that consist of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation.

  • Pin-to-Pin Compatible with ML4800 and FAN4800 and CM6800 and CM6800A
  • PWM Configurable for Current Mode or Feedforward 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