HV start-up flyback controller with integrated MOSFET for 5 W applications, 905 Hz burst frequency
Overview
Topology
Flyback Converter
Input voltage
207-253 V
Switching frequency
22.5-50.5 kHz
Output 1
5 V / 0.3 A
IC revision
1
Features
Low power SMPS controller with integrated power switch designed for applications up
to 5 W700 V high voltage power switch for global mains operationPrimary sensing for control of the output voltage without optocoupler and secondary
feedback circuitryMinimizes audible noise in all operation modesUSB battery charging and Energy Star 2.0 compliantJitter function for reduced EMIEnables no-load power consumption < 20 mWVery low supply current in no-load condition with energy saver modeIncorporates a high voltage start-up circuit with zero current consumption under
normal switching operationAvailable in halogen-free and Restriction of Hazardous Substances (RoHS) SO7
packageOverVoltage Protection (OVP) on Feedback control (FB) pin with auto-restartUnderVoltage LockOut (UVLO) protection on IC supply pinOverTemperature Protection (OTP)Soft-start by reduced peak current for zero and low output voltageDemagnetization protection for guaranteed discontinuous conduction mode operationOpen and short-circuit protection of the Feedback control (FB) pinShort-circuit protection of the charger output
Typical applications
Standby supply for TV and desktop PC
Power supply for white goods applications
Battery chargers for cellular phones and other low power adapters up to 5 W