RM3253 Overview
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...
RM3253 Key Features
- Built-in 800V high voltage BJT and minimal external ponets
- 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)