RM3253 Datasheet Off Line AC/DC Switcher

Manufacturer: REACTOR

RM3253 off line ac/dc switcher by REACTOR - Datasheet Preview

Datasheet Details

Part number	RM3253
Manufacturer	REACTOR
File Size	223.43 KB
Description	Off Line AC/DC Switcher
Download	RM3253 Download (PDF)

General 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.

Overview

RM3253 RM3253 Off Line AC/DC Switcher IC.

Key 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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