Power Factor Correction ICs


  • Status:Available

The FA1A50N 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 FB 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
  • Achieves low power consumption by using a high-voltage CMOS
    1. Startup of 100 μA (typ.), 0.8 mA (typ.) during operation
  • Capable of directly driving power MOSFET, output peak current: source 0.5 A/sink 1 A
  • VCC overvoltage protection function
  • Built-in low voltage malfunction prevention circuit (ON: 17.3 V, OFF:9.6 V)
  • Overload protection function
  • Soft start function
  • Restart timer
  • LED lamp support (PFC flyback circuit support)
  • Package: SOP-8


  • Switching Power Supplies
  • LED Lighting


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

Documentation Tools

Selection Guide Power Supply Control IC Selection Guide



Block diagram

Circuit diagram

Outline drawing

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