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LM2588T-ADJ Datenblatt(PDF) 1 Page - Texas Instruments |
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LM2588T-ADJ Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 38 page LM2588 www.ti.com SNVS117D – APRIL 1998 – REVISED APRIL 2013 LM2588 SIMPLE SWITCHER® 5A Flyback Regulator with Shutdown Check for Samples: LM2588 1 FEATURES DESCRIPTION The LM2588 series of regulators are monolithic 2345 • Requires Few External Components integrated circuits specifically designed for flyback, • Family of Standard Inductors and step-up (boost), and forward converter applications. Transformers The device is available in 4 different output voltage • NPN Output Switches 5.0A, Can Stand Off 65V versions: 3.3V, 5.0V, 12V, and adjustable. • Wide Input Voltage Range: 4V to 40V Requiring a minimum number of external components, these regulators are cost effective, and • Adjustable Switching Frequency: 100 kHz to simple to use. Included in the datasheet are typical 200 kHz circuits of boost and flyback regulators. Also listed • External Shutdown Capability are selector guides for diodes and capacitors and a • Draws Less Than 60 μA When Shut Down family of standard inductors and flyback transformers designed to work with these switching regulators. • Frequency Synchronization • Current-mode Operation for Improved The power switch is a 5.0A NPN device that can Transient Response, Line Regulation, and stand-off 65V. Protecting the power switch are current Current Limit and thermal limiting circuits, and an undervoltage lockout circuit. This IC contains an adjustable • Internal Soft-start Function Reduces In-rush frequency oscillator that can be programmed up to Current During Start-up 200 kHz. The oscillator can also be synchronized with • Output Transistor Protected by Current Limit, other devices, so that multiple devices can operate at Under Voltage Lockout, and Thermal the same switching frequency. Shutdown Other features include soft start mode to reduce in- • System Output Voltage Tolerance of ±4% Max rush current during start up, and current mode control Over Line and Load Conditions for improved rejection of input voltage and output load transients and cycle-by-cycle current limiting. TYPICAL APPLICATIONS The device also has a shutdown pin, so that it can be turned off externally. An output voltage tolerance of • Flyback Regulator ±4%, within specified input voltages and output load • Forward Converter conditions, is ensured for the power supply system. • Multiple-output Regulator • Simple Boost Regulator Connection Diagrams 7-Pin Bent, 7-Pin Top View Side View Figure 1. LM2588T-12 or LM2588T-ADJ See Package Number NDZ0007B 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 Switchers Made Simple is a trademark of Texas Instruments. 3 SIMPLE SWITCHER is a registered trademark of Texas Instruments. 4 Switchers Made Simple is a registered trademark of dcl_owner. 5 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 1998–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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Ähnliche Beschreibung - LM2588T-ADJ |
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