Green Mode Quasi-resonant ICs (Current mode)

This page contains information on Green Mode Quasi-resonant ICs.

Features

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

  • Supports Green Mode (Intermittent operation, frequency reduction)

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

Generation Type Name Input
voltage		 Maximum
frequency		 Overload
protection		 Over voltage sense Built-in
start up
circuit		 Green mode function Under-voltage lockout (ON/OFF) Remarks
4th
generation		 FA5640N 11 to 26V Bottom skip control by on-off width detection Auto-Recovery ZCD Pin 500V Burst operation 14V/8.0V
FA5641N Min. frequency
limitation
FA5642N 10V/8.0V
FA5643N 14V/8.0V Min. frequency
limitation,
Latch stop
function (IS pin)
FA5644N Timer-latch
FA5648N Auto-Recovery For High SW frequency
3rd
generation		 FA5570N 10 to 28V Max.
frequency
limitation
120kHz		 Auto-Recovery – Burst operation 18V/8.0V
FA5571N ZCD Pin Over
voltage
protection
Latch
FA5573N Linear
frequency
reduction
FA5577N VCC Pin

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PKG: SOP-8

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