Product Summary

The LM2588T-12 is a kind of Simple Switcher 5A Flyback Regulator with Shutdown. It is a monolithic integrated circuit specifically designed for flyback, step-up (boost), and forward converter applications. The LM2588T-12 is available in 4 different output voltage versions: 3.3V, 5.0V, 12V, and adjustable.Requiring a minimum number of external components, the regulator is cost effective, and simple to use. Included in the datasheet are typical circuits of boost and flyback regulators. Also listed are selector guides for diodes and capacitors and a family of standard inductors and flyback transformers designed to work with these switching regulators. The LM2588T-12 is ideal for: (1)Flyback regulator; (2)Forward converter; (3)Multiple-output regulator; (4)Simple boost regulator.

Parametrics

LM2588T-12 absolute maximum ratings: (1)Input Voltage: -0.4V ≦ VIN ≦ 45V; (2)Switch Voltage: -0.4V ≦ VSW ≦ 65V; (3)Switch Current: Internally Limited; (4)Compensation Pin Voltage: -0.4V ≦ VCOMP ≦ 2.4V; (5)Feedback Pin Voltage: -0.4V ≦ VFB ≦ 2 VOUT; (6)ON /OFF Pin Voltage: -0.4V ≦ VSH ≦ 6V; (7)Sync Pin Voltage: -0.4V ≦ VSYNC ≦ 2V; (8)Power Dissipation: Internally Limited; (9)Storage Temperature Range: -65℃ to +150℃.

Features

LM2588T-12 features: (1)Requires few external components; (2)Family of standard inductors and transformers; (3)NPN output switches 5.0A, castand off 65V; (4)Wide input voltage range: 4V to 40V; (5)Adjustable switching frequency: 100 kHz to 200 kHz; (6)External shutdowcapability; (7)Draws less than 60 μA wheshut down; (8)Frequency synchronization; (9)Current-mode operatiofor improved transient response, line regulation, and current limit; (10)Internal soft-start functioreduces in-rush current during start-up; (11)Output transistor protected by current limit, under voltage lockout, and thermal shutdown; (12)System output voltage tolerance of ±4% max over line and load conditions.

Diagrams

LM2588T-12 circuit diagram

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