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LM2596

ACTIVO

Regulador reductor SIMPLE SWITCHER® de 4.5 V a 40 V, 3 A y bajo número de componentes

Se encuentra disponible una versión más nueva de este producto

open-in-new Comparar alternativas
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
TPSM63603 ACTIVO Módulo de alimentación de 3 A, entrada de 3 V a 36 V y salida de 1 V a 16 V de alta densidad Next-generation with spread spectrum and frequency synchronization.
LMR51430 ACTIVO Convertidor buck sincrónico SIMPLE SWITCHER® de 4.5 V a 36 V, 3 A, con IQ de 40 µA. Next-generation with lower IQ.

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 40 Vin (min) (V) 4.5 Vout (max) (V) 37 Vout (min) (V) 3.3 Features Enable, Over Current Protection Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.005 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 40 Vin (min) (V) 4.5 Vout (max) (V) 37 Vout (min) (V) 3.3 Features Enable, Over Current Protection Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.005 Duty cycle (max) (%) 100
TO-220 (NEB) 5 86.0552 mm² (10.16 mm × 8.47 mm) TO-220 (NDH) 5 86.0552 mm² (10.16 mm × 8.47 mm) TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm)
  • New product available:
  • For faster time to market:
  • 3.3-V, 5-V, 12-V, and adjustable output versions
  • Adjustable version output voltage range: 1.2-V to 37-V ±4% maximum over line and load conditions
  • Available in TO-220 and TO-263 packages
  • 3-A output load current
  • Input voltage range up to 40 V
  • Requires only four external components
  • Excellent line and load regulation specifications
  • 150-kHz fixed-frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, I Q, typically 80 µA
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current-limit protection
  • Create a custom design using the LM2596 with the WEBENCH Power Designer
  • New product available:
  • For faster time to market:
  • 3.3-V, 5-V, 12-V, and adjustable output versions
  • Adjustable version output voltage range: 1.2-V to 37-V ±4% maximum over line and load conditions
  • Available in TO-220 and TO-263 packages
  • 3-A output load current
  • Input voltage range up to 40 V
  • Requires only four external components
  • Excellent line and load regulation specifications
  • 150-kHz fixed-frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, I Q, typically 80 µA
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current-limit protection
  • Create a custom design using the LM2596 with the WEBENCH Power Designer

The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-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.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.

The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what can be required with lower frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface mount package.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-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.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.

The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what can be required with lower frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface mount package.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 80 µA standby current. Self-protection features include a two stage frequency reducing current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM2596 SIMPLE SWITCHER® Power Converter 150-kHz 3-A Step-Down Voltage Regulator datasheet (Rev. G) PDF | HTML 22/03/2023
Nota sobre la aplicación Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25/03/2024
Artículo técnico How to increase system reliability and simplify design using DC/DC converters PDF | HTML 13/06/2016
Artículo técnico The importance of accurate switching frequency and current limit when selecting bu PDF | HTML 19/04/2016
Artículo técnico Advantages of leaded packages in robust industrial designs PDF | HTML 8/03/2016
Nota sobre la aplicación Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12/09/2014
Nota sobre la aplicación AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24/04/2013
Nota sobre la aplicación AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23/04/2013
Nota sobre la aplicación AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23/04/2013
Nota sobre la aplicación AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23/04/2013
Nota sobre la aplicación AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23/04/2013
Nota sobre la aplicación AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23/04/2013
Nota sobre la aplicación AN-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B) 23/04/2013
Nota sobre la aplicación AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23/04/2013
Nota sobre la aplicación AN-1082 Adjust or Synchronize LM2586/88 Switching Frequency (Rev. B) 23/04/2013
Nota sobre la aplicación AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 23/04/2013
Nota sobre la aplicación AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23/04/2013
Nota sobre la aplicación Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 21/03/2007
Nota sobre la aplicación Buck Converters Provide a Battery Charger and System Power 21/03/2007
Nota sobre la aplicación Input and Output Capacitor Selection 19/09/2005
Más documentación SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12/07/2005
Nota sobre la aplicación AN-643 EMI/RFI Board Design (Rev. B) 3/05/2004

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LM2596S-ADJEVM — Módulo de evaluación del convertidor reductor LM2596

El módulo de evaluación (EVM) LM2596S-ADJEVM es un circuito totalmente ensamblado y probado para evaluar el convertidor reductor LM2596. El EVM funciona con una entrada 7 V a 40 V y proporciona una salida de o 5 V a 3 A.
Guía del usuario: PDF
Productos y hardware compatibles
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Modelo de simulación

LM2596 5P0 PSpice Transient Model

SNVMA61.ZIP (72 KB) - Modelo PSpice
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LM2596 5P0 Unencrypted PSpice Transient Model

SNVMA62.ZIP (2 KB) - Modelo PSpice
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LM2596_12P0 PSpice Transient Model

SNVMA64.ZIP (70 KB) - Modelo PSpice
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Modelo de simulación

LM2596_12P0 Unencrypted PSpice Transient Model

SNVMA63.ZIP (2 KB) - Modelo PSpice
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Modelo de simulación

LM2596_3P3 PSpice Transient Model

SNVMA66.ZIP (77 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

LM2596_3P3 Unencrypted PSpice Transient Model

SNVMA65.ZIP (2 KB) - Modelo PSpice
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TO-220 (NEB) 5 Ultra Librarian
TO-220 (NDH) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian

Pedidos y calidad

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