LM2591HV Datasheet | Texas Instruments

Features - 1 3.3-V, 5-V, and Adjustable Output Versions - Adjustable Version Output Voltage Range: 1.2 V to 57 V ±4% Maximum Over Line and Load Conditions - Specified 1-A Output Load Current - Available in 5-Pin Package - Input Voltage Range Up to 60 V - 150-k Hz Fixed Frequency Internal Oscillator - ON and OFF Control - Low Power Standby Mode, IQ Typically 90 μA - High Efficiency - Thermal Shutdown and Current-Limit Protection 2 Applications - Simple High-Efficiency Step-Down (Buck) Regulators - Efficient Preregulator for Linear Regulators - On-Card Switching Regulators - Positive-to-Negative Converters 3 Description The LM2591HV 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, and an adjustable output version. This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter. Requiring a minimum number of external ponents, these regulators are simple to use and include internal frequency pensation, improved line and load specifications, and a fixed-frequency oscillator. The LM2591HV operates at a switching frequency of 150 k Hz, thus allowing smaller sized filter ponents than what would be needed with lower frequency switching regulators. Available in a standard 5-pin package with several different lead bend options, and a 5-pin surface mount package. PART NUMBER Device Information(1) PACKAGE BODY SIZE (NOM) DDPAK/TO-263 (5) TO-220 (5) 10.18 mm × 8.41 mm 14.986 mm × 10.16 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application (Fixed Output Voltage Versions) Copyright © 2016, Texas Instruments Incorporated An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes,...