Variable frequency operation

Low Start-up Current(Typ.100uA )

Pulse by Pulse Current Limiting

Over Current Protection

Over Voltage Protection (Min. 20)

Internal Thermal Shutdown Function

Under Voltage Lockout

Internal High Voltage Sense FET

Auto-Restart Mode

Frequency Modulation for low EMI

Advanced Burst-Mode Operation

FEATURES

SPGP0280A

( SEMIHOW POWER SWITCH )

APPLICATION

SMPS for STB, SVR, DVD & DVCD

SMPS for Printer, Facsimile & Scanner

Adaptor

The SemiHow Power Switch product family is specially designed for an off-line SMPS with minimal external components.

The SemiHow Power Switch consists of a high voltage power SenseFET and a current mode PWM IC.

It has a basic platform well suited for the cost effective design in either a flyback converter

DESCRIPTION

INTERNAL BLOCK DIAGRAM

May 2013