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RM3253

Part Number	RM3253
Manufacturer	REACTOR
Description	Off Line AC/DC Switcher IC
Published	Mar 8, 2017
Detailed Description	RM3253 RM3253 Off Line AC/DC Switcher IC Description The RM3253 series switcher ICs cost effectively replace all power...
Datasheet	RM3253 PDF File

Overview

RM3253 RM3253 Off Line AC/DC Switcher IC Description The RM3253 series switcher ICs cost effectively replace all power supplies up to 5W output power based on unregulated isolated linear transformer (50/60HZ).
Unlike conventional PWM (pulse width modulation) controllers, they regulate the output voltage in a new method of off-time modulation control.
The controller consists of a VCO (voltage control oscillator), Sense and logic circuit, VDD pin, under-voltage lockout circuit, protection for over-voltage, current limited circuit, leading edge blanking, over load protection and fault condition auto-restart.
They are ideal low power AC/DC adapter/charger solution for portable devices, Features • Built-in 800V high voltage BJT and minimal external componets • Low start-up current: Typ.
15 μA Max.
25 μA • UVLO(under voltage lockout):Typ.
12V start-up Typ.
6V shut-down • Low operating current:Typ.
2 mA Max.
5 mA • LEB(leading edge blanking): Typ.
300ns • OVP(over voltage protection)...

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