PFC/PWM Controller Combination 16-Pin SOIC N T/R

The highly integrated FAN4800CSMY parts is specially designed for power supplies that consist Of boost PFC and PWM. They require very few external components to achieve versatile protections / compensation. They are available in 16—pin DIP and SOP packages. The PWM can be used in either current or voltage mode. In voltage mode, feed-forward from the PFC output bus can reduce the secondary output ripple. Compared With older productions, ML4800 and FAN4800, FAN4800CSMY have lower operation current that saves pover consumption in external devices. FAN4800CSMY have accurate 499% maximum duty Of PWM that makes the hold-up tirne longer. Brownout protection and PFC soft- start functions available in this series are not available in ML4800 and FAN4800.

• Pin-to-Pin Compatible with ML4800
• PWM Configurable for Current Mode or Feedforward Voltage-Mode Operation
• Internally Synchronized Leading-Edge PFC and Trailing-Edge one IC
• LOW Operating Current
• Innovative Switching-Charge Multipher 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
• Brownout Protection
• Interleaved PFC/PWM switching
• Irnproved Efficiency at Light Load