Product Information
Green Mode Quasi-resonant ICs (Current mode)

This page provides product information on Green Mode Quasi-resonant ICs (Current mode).

Features

  • Built-in 500 V withstand voltage start-up circuit

  • Supports Green Mode (Intermittent operation, frequency reduction)

  • Various protective functions (overvoltage, overload, etc.)

Type
Name		 Maximum
frequency		 Current
sense		 Overcurrent
protection
threshold		 Overload
protection		 Overvoltage
protection		 Frequency-
reduction
function		 Burst
operation		 Vcc
voltage
range		 Vcc threshold voltage Features
ON OFF
FA5640N 110kHz + detection +0.5V
(100V AC)
+0.45V
(230V AC)		 Auto-Recovery Latch stop,
Winding voltage detection		 − ✓ 11 to 26V 14.0V 8.0V −
FA5641N ・Min. frequency limitation (25kHz)
FA5642N 10.0V −
FA5643N 14.0V ・Min. frequency limitation (25kHz)
・Latch stop function (+0.97V)
FA5644N Latch stop −
FA5648N 260kHz Auto-Recovery −
FA5570N 120kHz +1.0V Auto-Recovery − − ✓ 10 to 28V 18.0V 8.0V −
FA5571N Latch stop,
Winding voltage detection		 ・Current sense latch stop (+2.0V)
FA5573N ✓ − ・Current sense latch stop (+2.0V)
FA5577N +0.5V Latch stop,
VCC voltage detection		 −

NEW New product

UP Update

UD Under development

  • Applied circuit: Flyback converter

  • Control system: Quasi-resonant (Current Mode)

  • Built-in 500 V withstand voltage start up circuit

  • PKG: SOP-8

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