Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

LM73605

AKTIV

Synchroner Abwärtsspannungswandler, 3,5 bis 36 V, 5 A

Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
LM61460 AKTIV Synchroner Abwärtswandler mit geringem EMI-Wert, 3 bis 36 V, 6 A Smaller solution size, higher efficiency and lower EMI.
TPSM63608 AKTIV Kompaktes 36-V-Eingang, 1-V- bis 20-V-Ausgang, 6-A-Abwärts-Stromversorgungsmodul in einem verbessert Smaller design with an integrated-inductor power module.

Produktdetails

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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Technische Dokumentation

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Typ Titel Datum
* 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 Apr 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 Mai 2018
Technical article Vary the output voltage in an inverting buck-boost topology PDF | HTML 12 Okt 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

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM73605EVM-5V-2MHZ — Evaluierungsmodul für synchronen LM73605 Abwärtswandler

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.
Benutzerhandbuch: PDF
Evaluierungsplatine

LM73605EVM-5V-400K — Evaluierungsmodul für synchronen LM73605 Abwärtswandler

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.

Benutzerhandbuch: PDF
Simulationsmodell

LM73605 Inverting and non-inverting PSpice Transient Model

SNVMBD7.ZIP (955 KB) - PSpice Model
Simulationsmodell

LM73605 TINA-TI Transient Reference Design

SNVMBE0.TSC (2316 KB) - TINA-TI Reference Design
Simulationsmodell

LM73605 TINA-TI Transient Spice Model

SNVMBE1.ZIP (79 KB) - TINA-TI Spice Model
Simulationsmodell

LM73605 Unencrypted PSpice Transient Model

SNVJ003.ZIP (9 KB) - Spice Model
Simulationsmodell

TINA-TI Enable Hysteresis Schematic

SNVMBL7.ZIP (4 KB) - TINA-TI Reference Design
Berechnungstool

SNVR524 LM73605 Quickstart Tool

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC- und DC/DC-Wandler (integrierter FET)
LM73605 Synchroner Abwärtsspannungswandler, 3,5 bis 36 V, 5 A LM73605-Q1 Synchroner 5-A-Abwärtsspannungswandler für die Automobilindustrie, 3,5 V bis 36 V LM73606 Synchroner Abwärtsspannungswandler, 3,5 bis 36 V, 6 A LM73606-Q1 Synchroner 6-A-Abwärtsspannungswandler für die Automobilindustrie, 3,5 V bis 36 V
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Design guide: PDF
Schaltplan: PDF
Referenzdesigns

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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
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RNP) 30 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Support und Schulungen

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