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LM2598SX-5.0 Datasheet(PDF) 1 Page - Texas Instruments |
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LM2598SX-5.0 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 47 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM2598 SNVS125D – MARCH 1998 – REVISED MAY 2016 LM2598 SIMPLE SWITCHER® Power Converter 150-kHz 1-A Step-Down Voltage Regulator, With Features 1 1 Features 1 • 3.3-V, 5-V, 12-V, and Adjustable Output Versions • Adjustable Version Output Voltage Range, 1.2-V to 37-V ±4% Max Over Line and Load Conditions • 1-A Output Current • Available in 7-Pin TO-220 and DDPAK (Surface Mount) Package • Input Voltage Range Up to 40 V • Excellent Line and Load Regulation Specifications • 150 kHz Fixed Frequency Internal Oscillator • Shutdown/Soft-start • Out of Regulation Error Flag • Error Output Delay • Low Power Standby Mode, IQ, Typically 85 μA • High Efficiency • Uses Readily Available Standard Inductors • Thermal Shutdown and Current Limit Protection 2 Applications • Simple High-Efficiency Step-down (Buck) Regulator • Efficient Preregulator for Linear Regulators • On-Card Switching Regulators • Positive to Negative Converter 3 Description The LM2598 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. The LM2598 is a member of the LM259x family. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, error flag delay and error flag output. The LM2598 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower- frequency switching regulators. Available in a standard 7-lead TO-220 package with several different lead bend options, and a 7-lead DDPAK surface mount package. Typically, for output voltages less than 12 V, and ambient temperatures less than 50°C, no heat sink is required. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM2598 TO-220 (7) 14.986 mm × 10.16 mm TO-263 (7) 10.10 mm × 8.89 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Fixed output voltage versions |
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