Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)
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Gestión de la energía
Convertidores de CA/CC y CC/CC (FET integrado)

LM73605

ACTIVO

Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 5 A

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LM61460 ACTIVO Convertidor reductor síncrono de 3 V a 36 V, 6 A y bajo EMI Smaller solution size, higher efficiency and lower EMI.
TPSM63608 ACTIVO Módulo de alimentación de alta densidad de 36 V de entrada, 1 V a 20 V de salida y 6 A en QFN HotRod Smaller design with an integrated-inductor power module.

LM73605

ACTIVO
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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 3.5 Vin (max) (V) 36 Switching frequency (min) (kHz) 350 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 15 Duty cycle (max) (%) 96
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 3.5 Vin (max) (V) 36 Switching frequency (min) (kHz) 350 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 15 Duty cycle (max) (%) 96
WQFN (RNP) 30 24 mm² 6 x 4
  • New product available: LM61460 60-V, 6-A synchronous converter
  • Synchronous rectification
  • Wettable flanks QFN package (WQFN)
  • Low quiescent current
    • 0.8 µA in shutdown (typical)
    • 15 µA in active mode with no load (typical)
  • Wide voltage conversion range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • External bias input to improve efficiency
  • Pin-selectable auto mode or forced PWM operation
  • Adjustable frequency range: 350 kHz to 2.2 MHz
  • Synchronizable to external clock
  • Internal compensation
  • Power-good flag
  • Precision enable to program system UVLO
  • Flexible soft-start features:
    • Start-up into pre-biased load
    • Fixed or adjustable soft-start time
    • Output voltage tracking
  • Cycle-by-cycle current limiting
  • Short-circuit protection with hiccup mode
  • Create a custom design with the WEBENCH® power designer using LM73605 or LM73606
  • New product available: LM61460 60-V, 6-A synchronous converter
  • Synchronous rectification
  • Wettable flanks QFN package (WQFN)
  • Low quiescent current
    • 0.8 µA in shutdown (typical)
    • 15 µA in active mode with no load (typical)
  • Wide voltage conversion range:
    • tON-MIN = 60 ns (typical)
    • tOFF-MIN = 70 ns (typical)
  • Low MOSFET ON-resistance:
    • RDS_ON_HS = 53 mΩ (typical)
    • RDS_ON_LS = 31 mΩ (typical)
  • External bias input to improve efficiency
  • Pin-selectable auto mode or forced PWM operation
  • Adjustable frequency range: 350 kHz to 2.2 MHz
  • Synchronizable to external clock
  • Internal compensation
  • Power-good flag
  • Precision enable to program system UVLO
  • Flexible soft-start features:
    • Start-up into pre-biased load
    • Fixed or adjustable soft-start time
    • Output voltage tracking
  • Cycle-by-cycle current limiting
  • Short-circuit protection with hiccup mode
  • Create a custom design with the WEBENCH® power designer using LM73605 or LM73606

The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product, LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare specifications. Start a Webench design with LM61460-Q1. Use the LMZM33606 module for faster time to market.

The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product, LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare specifications. Start a Webench design with LM61460-Q1. Use the LMZM33606 module for faster time to market.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM73605/LM73606 3.5-V to 36-V, 5-A or 6-A Synchronous Step-Down Voltage Converter datasheet (Rev. A) PDF | HTML 21 jul 2017
Functional safety information LM73605 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 12 jul 2022
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 jul 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 abr 2021
Technical article How to add hysteresis to a DC/DC converter PDF | HTML 12 nov 2018
Technical article Effects of IC package on EMI performance PDF | HTML 22 may 2018
Technical article Vary the output voltage in an inverting buck-boost topology PDF | HTML 12 oct 2017
Application note Designing High Performance, Low-EMI, Automotive Power Supplies 30 sep 2017
EVM User's guide LM73605/LM73606 EVM User's Guide 20 sep 2017

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

LM73605EVM-5V-2MHZ — Módulo de evaluación del convertidor reductor síncrono LM73605

The LM73605EVM-5V-2MHZ evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM73605 synchronous step-down voltage converter. The EVM operates from 6V to 36V input and provides a 5V output voltage with 5A maximum load current.
Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

LM73605EVM-5V-400K — Módulo de evaluación del convertidor reductor síncrono LM73605

The LM73605EVM-5V-400K evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM73605 synchronous step-down voltage converter. The EVM operates from 6V to 36V input and provides a 5V output voltage with 5A maximum load current.

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LM73605 Inverting and non-inverting PSpice Transient Model

SNVMBD7.ZIP (955 KB) - PSpice Model
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Modelo de simulación

LM73605 TINA-TI Transient Reference Design

SNVMBE0.TSC (2316 KB) - TINA-TI Reference Design
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Modelo de simulación

LM73605 TINA-TI Transient Spice Model

SNVMBE1.ZIP (79 KB) - TINA-TI Spice Model
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Modelo de simulación

LM73605 Unencrypted PSpice Transient Model

SNVJ003.ZIP (9 KB) - Spice Model
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Modelo de simulación

TINA-TI Enable Hysteresis Schematic

SNVMBL7.ZIP (4 KB) - TINA-TI Reference Design
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Herramienta de cálculo

SNVR524 — LM73605 Quickstart Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
LM73605 — Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 5 A LM73605-Q1 — Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 5 A apto para automoción LM73606 — Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 6 A LM73606-Q1 — Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 6 A apto para automoción
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Archivo Gerber

DC/DC Converter Enable Hysteresis Calculator

SNVC227.ZIP (40 KB)
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Diseños de referencia

TIDA-01458 — Diseño de referencia de la fuente de alimentación de ±2.5 a ±12 VOUT y 3 A, con caída fija de bajo r

This reference design allows a digitally programmable power supply to power an ultrasound transmit circuit for continuous wave (CW) mode from a 24-V bus. There are two outputs adjustable from ±2.5 to ±12 V under user software control. These outputs can provide up to 2 A with very low (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-010011 — Diseño de referencia de arquitectura de fuente de alimentación de alta eficiencia para módulo de pro

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN (RNP) 30 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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