Daewoo DTL- 25G6F Service Manual download pdf (Page 23)

STR-F6654 (Hybrid IC for a Switching Regulator)

(1) General Description

The STR-F6654 is a Hybrid IC with a built in power transistor and a separate excitation control IC,

designed for converter type switching mode power supply applications.

The IC is capable of quasi-resonant mode and requires small number of external component.

(2) Feature

•

Small SIP isolated package : Resin sealed type (transfer mold)

•

Lower power dissipation at a lighter load

•

Many protection function : - Pulse-by-pulse over current protection

- Over-voltage protection with a latch

- Thermal protection with a latch

•

These protection functions are incorporated and can be latched with an external signal.

(3) Block Diagram

(4) Pin Description

Symblols

O.C.P/F.B

VIN

GND

Description

Overcurrent/Feedback terminal

Source terminal

Drain terminal

Power supply terminal

Ground terminal

Functions

Input of overcurrent detection signal and

constant voltage control signal

MOS FET source

MOS FET drain

Input of power supply for control circuit

Ground

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Daewoo DTL- 25G6F Service Manual Page 23