Inicio Administración de potencia Reguladores conmutados CC/CC Convertidores de CC/CC

LM5576

ACTIVO

Regulador reductor con Vin amplia de 6 V a 75 V y 3 A

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 75 Vin (min) (V) 6 Vout (max) (V) 70 Vout (min) (V) 1.23 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001 Duty cycle (max) (%) 95
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 75 Vin (min) (V) 6 Vout (max) (V) 70 Vout (min) (V) 1.23 Features Enable, Frequency synchronization, Over Current Protection, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001 Duty cycle (max) (%) 95
HTSSOP (PWP) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • Ultra-wide input voltage range from 6V to 75V
  • Integrated 75V, 170mΩ N-channel MOSFET
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Controller or peripheral frequency synchronization
  • Adjustable soft start
  • Emulated current mode control architecture
  • Wide bandwidth error amplifier
  • Built-in protection
  • HTSSOP-20EP (exposed pad)
  • Create a custom design using the LM5576 with the WEBENCH Power Designer
  • Ultra-wide input voltage range from 6V to 75V
  • Integrated 75V, 170mΩ N-channel MOSFET
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Controller or peripheral frequency synchronization
  • Adjustable soft start
  • Emulated current mode control architecture
  • Wide bandwidth error amplifier
  • Built-in protection
  • HTSSOP-20EP (exposed pad)
  • Create a custom design using the LM5576 with the WEBENCH Power Designer

The LM5576 is an easy-to-use, buck regulator, which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6V to 75V, the LM5576 delivers 3A of continuous output current with an integrated 170mΩ N-Channel MOSFET. The regulator uses an emulated current mode architecture which provides inherent line regulation, tight load transient response, and ease-of-loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 makes sure of robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a power-enhanced, 20-pin HTSSOP package that features an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH circuit design and selection simulation services online design tools.

The LM5576 is an easy-to-use, buck regulator, which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6V to 75V, the LM5576 delivers 3A of continuous output current with an integrated 170mΩ N-Channel MOSFET. The regulator uses an emulated current mode architecture which provides inherent line regulation, tight load transient response, and ease-of-loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5576 makes sure of robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a power-enhanced, 20-pin HTSSOP package that features an exposed die attach pad for thermal dissipation. The LM5576 is supported by the full suite of WEBENCH circuit design and selection simulation services online design tools.

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new Comparar alternativas
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LMR38020 ACTIVO Convertidor de potencia buck síncrono SIMPLE SWITCHER® 4,2 V a 80 V, 2 A, con IQ de 40 µA Higher voltage, 80 V, with 2-A current capability, supporting high cells battery pack and POE application.
LM76003 ACTIVO Convertidor de tensión reductor síncrono de 3.5 V a 60 V y 3.5 A Next-generation 3.5-V to 60-V, 3.5-A synchronous step-down voltage converter.

Documentación técnica

No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 20
Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM5576 75V, 3A, Step-Down Switching Regulator datasheet (Rev. K) PDF | HTML 3/11/2025
Nota sobre la aplicación Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25/03/2024
Informe Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 3/07/2018
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
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-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 6/05/2013
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 Quick Start Guide for a 3 Amp Buck Regulator Using the LM5576 and LM25576 (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-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 Understanding and Applying Current-Mode Control Theory 19/08/2007
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

LM5576EVAL — Módulo de evaluación de regulador reductor de conmutación de 75 V y 3 A

The LM5576 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5576 regulator IC. The evaluation board provides a 5V output with a 3A current capability. The ultra-wide input voltage ranges from (...)

Guía del usuario: PDF
Productos y hardware compatibles
En inventario
Límite:
??asset.out-of-stock-ti_es_MX??
No disponible
Modelo de simulación

LM5576 Non-Inverting and Inverting PSpice Transient Model (Rev. C)

SNVM292C.ZIP (1168 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

LM5576 Non-Inverting and Inverting Unencrypted PSpice Transient Model (Rev. C)

SNVM935C.ZIP (5 KB) - Modelo PSpice
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Inverting Buck Boost Startup Reference Design

SNVMBP7.TSC (677 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Line Transient Reference Design

SNVMBP5.TSC (565 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Load Transient Reference Design (Rev. A)

SNVM548A.TSC (566 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Spice Model (Rev. A)

SNVM549A.ZIP (10 KB) - Modelo TINA-TI Spice
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Start-up Reference Design (Rev. A)

SNVM547A.TSC (661 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Modelo de simulación

LM5576 TINA-TI Transient Steady State Reference Design

SNVMBP6.TSC (647 KB) - Diseño de referencia TINA-TI
Productos y hardware compatibles
Herramienta de cálculo

LM2557X-557XQUICK-CALC — Calculadora de componentes con inicio rápido SIMPLE SWITCHER LM(2)557x

Productos y hardware compatibles
Herramienta de cálculo

SIMPLESWITCHER-COMPONENT-CALC — Calculadora de componentes de inicio rápido SIMPLE SWITCHER LM(2)557x descargable

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 20 Ultra Librarian

Pedidos y calidad

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene alguna pregunta sobre calidad, encapsulados o pedido de productos de TI, consulte el servicio de asistencia de TI. ​​​​​​​​​​​​​​

Videos