Power Factor Correction ICs


  • Status:Available

The FA1A01N is a control IC for configuring a critical-mode power factor correction converter. It achieves low power consumption by using a high-voltage CMOS process. It also has a redundant overvoltage protection function and output short-circuit protection circuit.


  • Capable of low standby power by disabling input voltage detection
  • High-precision current detection: 0.6 V ± 2%
  • Improves efficiency under light loads using a frequency reduction function
  • Improves power factor correction by reducing dead angles when the input voltage waveform has a low phase angle
  • Reduces noise using an overshoot reduction function and dynamic OVP circuit
  • Achieves low power consumption by using a high-voltage CMOS process
    1. Startup of 500 μA (typ), 1.5 mA (typ) during operation
  • Capable of directly driving power MOSFET, output peak current: source 1 A/sink 1 A
  • Stops switching and protects the output electrolytic capacitor using a redundant overvoltage protection circuit, even when an abnormality occurs in the output voltage detection line.
  • Stops circuit operation when the output voltage detection unit detects an abnormality using an FB short-circuit detection circuit
  • Built-in low voltage malfunction prevention circuit (12.4 V ON/8.8 V OFF)
  • Restart timer
  • Package: SOP-8


  • Switching Power Supplies


Controller type CRM PFC
Applied circuit Detail PFC (Boost))
Frequency Selfoscillation
VCC(V) 10 to 26
OVP pin Detail With
Overload operation No (with overcurrent protection)
Overvoltage operation Auto-Recovery (FB)
Package SOP-8

Documentation Tools

Reference design Power Supply Control IC Reference Design
Design tools PFC board design tool
Selection Guide Power Supply Control IC Selection Guide



Block diagram

Circuit diagram

Outline drawing

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