LM2590HV

ACTIVE

SIMPLE SWITCHER Power Converter 150 KHz 1A Step-Down Voltage Regulator with Features

A newer version of this product is available

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Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Over Current Protection, Power good Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 60 Switching frequency (min) (kHz) 110 Switching frequency (max) (kHz) 173 Features Over Current Protection, Power good Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 57 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24
  • 3.3-V, 5-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.2 V to 57 V ±4% Max Over Line and Load Conditions
  • Ensured 1-A Output Load Current
  • Available in 7-Pin TO-220 and TO-263 (Surface-Mount) Package
  • Input Voltage Range Up To 60 V
  • 150-kHz Fixed Frequency Internal Oscillator
  • Shutdown and Soft-start
  • Out Of Regulation Error Flag
  • Error Flag Delay
  • Low Power Standby Mode, IQ: 90 µA (Typical)
  • High Efficiency
  • Thermal Shutdown And Current Limit Protection
  • 3.3-V, 5-V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range, 1.2 V to 57 V ±4% Max Over Line and Load Conditions
  • Ensured 1-A Output Load Current
  • Available in 7-Pin TO-220 and TO-263 (Surface-Mount) Package
  • Input Voltage Range Up To 60 V
  • 150-kHz Fixed Frequency Internal Oscillator
  • Shutdown and Soft-start
  • Out Of Regulation Error Flag
  • Error Flag Delay
  • Low Power Standby Mode, IQ: 90 µA (Typical)
  • High Efficiency
  • Thermal Shutdown And Current Limit Protection

The LM2590HV 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 LM2591HV with additional supervisory and control features.

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, output error flag and flag delay.

The LM2590HV operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface-mount package.

Other features include an ensured ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring 90-µA standby current (typical). Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

The LM2590HV 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 LM2591HV with additional supervisory and control features.

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, output error flag and flag delay.

The LM2590HV operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface-mount package.

Other features include an ensured ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring 90-µA standby current (typical). Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

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Technical documentation

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Type Title Date
* Data sheet LM2590HV SIMPLE SWITCHER® Power Converter 150-kHz, 1-A Step-Down Voltage Regulator datasheet (Rev. C) PDF | HTML 28 Jul 2016
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mar 2024
Technical article How to increase system reliability and simplify design using DC/DC converters PDF | HTML 13 Jun 2016
Technical article The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 19 Apr 2016
Technical article Advantages of leaded packages in robust industrial designs PDF | HTML 08 Mar 2016
Application note Cap Drop Offline Supply for E-Meters 16 Jun 2015
Application note Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A) 16 Jun 2015
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12 Sep 2014
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 Apr 2013
Application note AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B) 23 Apr 2013
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23 Apr 2013
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23 Apr 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 Apr 2013
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 23 Apr 2013
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23 Apr 2013
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23 Apr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 Apr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 Apr 2013
Application note Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 21 Mar 2007
Application note Input and Output Capacitor Selection 19 Sep 2005
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 Jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 May 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

LM2590HV-ADJ PSpice Transient Model

SNVMAK1.ZIP (104 KB) - PSpice Model
Simulation model

LM2590HV-ADJ Unencrypted PSpice Transient Model

SNVMAK2.ZIP (3 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian

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