TDA4605 - ST Microelectronics

TDA4605 CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS

The IC TDA4605 controls the MOS Power Transistor and performs all necessary regulation and monitoring functions in free running flyback converters. 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 available from SIEMENS .

Features

s Consumer Electronics A.G. PIN CONNECTIONS SO8 (Plastic Micropackage) ORDER CODE : TDA4605D REGULATION INPUT PRIMARY CURRENT SIMULATION PRIMARY VOLTAGE MONITORING GROUND 1 2 3 4 8 7 6 5 ZERO CROSSING DETECTOR INPUT SOFT-START SUPPLY VOLTAGE OUTPUT 4605-01.EPS April 1996 1/6 TDA4605 PIN CONFIGURATION Pin Number 1 Description Regulating voltage : information input concerning secondary voltage. By comparing the regulating voltage obtained from the regulating winding of the transformer with the internal reference voltage, the output pulse width on Pin 5 is adapted to the load of the secon.