Part LM2587
Description SIMPLE SWITCHER 5A Flyback Regulator
Category Voltage Regulator
Manufacturer National Semiconductor
Size 676.50 KB
National Semiconductor
LM2587

Overview

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.

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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