LM2587 Datasheet (PDF) Download
National Semiconductor
LM2587

Description

The LM2587 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 adjustable.

Key Features

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  • Requires few external components Family of standard inductors and transformers NPN output switches 5.0A, 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