TDA4605 datasheet(1/6 Pages) STMICROELECTRONICS

Il numero della parte	TDA4605

Spiegazioni elettronici	CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS

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TDA4605

CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES

USING MOS TRANSISTORS

April 1996

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REGULATION INPUT

PRIMARY CURRENT SIMULATION

PRIMARY VOLTAGE MONITORING

GROUND

OUTPUT

SUPPLY VOLTAGE

SOFT-START

ZERO CROSSING DETECTOR INPUT

PIN CONNECTIONS

DIP8

(Plastic Package)

ORDER CODE : TDA4605

.

FOLD-BACK CHARACTERISTIC PROVIDES

OVERLOAD PROTECTION FOR EXTERNAL

DIODES

.

BURST OPERATION UNDER SHORT-CIR-

CUIT AND NO LOAD CONDITIONS

.

LOOP ERROR PROTECTION

.

SWITCH-OFF IN CASE OF TOO LOW LINE

VOLTAGE (under voltage switch-off)

.

LINE VOLTAGE COMPENSATION OF OVER-

LOAD POINT

.

SOFT-START FOR SMOOTH START-UP

.

CHIP OVER-TEMPERATURE PROTECTION

(thermal shutdown)

.

ON-CHIP PARASITIC TRANSFORMER OS-

CILLATION SUPPRESSION CIRCUITRY

.

DECREASE OF REGULATED VOLTAGE FOR

LOW POWER CONSUMPTION

DESCRIPTION

The IC TDA4605 controls the MOS Power Transis-

tor and performs all necessary regulation and

monitoring functions in free running flyback con-

verters. Since good load regulation over a wide

load range is attained, this IC is particularly suitable

for Consumer as well as Industrial Power Supplies.

Alternative source of the TDA4605 is also avail-

able from SIEMENS Semiconductors Consumer

Electronics A.G.

SO8

(Plastic Micropackage)

ORDER CODE : TDA4605D

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