LM2585SX-12 Datasheet PDF - National

General Description

●The LM2585 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications. The device is available in 4 different output voltage versions: 3.3V, 5.0V, 12V, and adjust able.

●Features

●Requires few external components

●Family of standard inductors and transformers

●NPN output switches 3.0A, can stand off 65V

●Wide input voltage range: 4V to 40V

●Current-mode operation for improved transient response, line regulation, and current limit

●100 kHz switching frequency

●Internal soft-start function reduces in-rush current during start-up

●Output transistor protected by current limit, under voltage lockout, and thermal shutdown

●System Output Voltage Tolerance of ±4% max over line and load conditions

●Typical Applications

●Flyback regulator

●Multiple-output regulator

●Simple boost regulator

●Forward converter