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LM76005-Q1

ACTIVE

3.5-V to 60-V, 5-A synchronous voltage regulator

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Data sheet

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NEW LM65645-Q1 ACTIVE Automotive, 4.5A, 3V to 65V buck converter optimized for power density and low EMI Better efficiency and smaller solution size
LM706A0-Q1 ACTIVE Automotive, High-density, 4.5V to 65V input, 10A low-EMI synchronous DC/DC step-down converter Adjustable current limit, higher efficiency, lower IQ and improved EMI mitigation features

LM76005-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 5 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 57 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 5 Vin (max) (V) 60 Vin (min) (V) 3.5 Vout (max) (V) 57 Vout (min) (V) 1 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Wettable flanks package Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000015 Duty cycle (max) (%) 98 TI functional safety category Functional Safety-Capable
WQFN (RNP) 30 24 mm² 6 x 4
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA

  • Functional Safety-Capable

    • Documentation available to aid functional safety system design

  • Designed for applications
    • Input transient protection up to 65 V

    • Optimized for low EMI requirements

    • Pin-selectable FPWM operation
    • Adjustable frequency range: 200 kHz to 500 kHz
    • Start up with pre-biased output voltage
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Suited for scalable power supplies
    • Pin compatible with:
      • LM76002/3-Q1 (60 V, 2.5 A or 3.5 A)
    • Output voltage: 1 V to 95% of VIN
    • Synchronization to external clock
    • Adjustable soft-start (6.3 ms default)
  • Low power dissipation across load spectrum
    • 15-µA quiescent current in regulation
    • 95% efficiency at 400 kHz (12VIN, 5VOUT, 2A)
    • 92% PFM efficiency at 10-mA (12VIN, 5VOUT)
    • External bias option for improved efficiency
  • Create a custom design using the LM76005-Q1 with the WEBENCH® Power Designer
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA

  • Functional Safety-Capable

    • Documentation available to aid functional safety system design

  • Designed for applications
    • Input transient protection up to 65 V

    • Optimized for low EMI requirements

    • Pin-selectable FPWM operation
    • Adjustable frequency range: 200 kHz to 500 kHz
    • Start up with pre-biased output voltage
    • Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, hiccup short-circuit protection
  • Suited for scalable power supplies
    • Pin compatible with:
      • LM76002/3-Q1 (60 V, 2.5 A or 3.5 A)
    • Output voltage: 1 V to 95% of VIN
    • Synchronization to external clock
    • Adjustable soft-start (6.3 ms default)
  • Low power dissipation across load spectrum
    • 15-µA quiescent current in regulation
    • 95% efficiency at 400 kHz (12VIN, 5VOUT, 2A)
    • 92% PFM efficiency at 10-mA (12VIN, 5VOUT)
    • External bias option for improved efficiency
  • Create a custom design using the LM76005-Q1 with the WEBENCH® Power Designer

The LM76005-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 5 A (LM76005-Q1) of load current from an input up to 60 V. Tolerance goes up to 65 V, easing input surge protection.

The LM76005-Q1 use peak-current-mode control to provide exceptional efficiency and output accuracy in a small solution size. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR25) and thermal performance. The small solution size and feature set of the LM76005-Q1 are designed to simplify the implementation for a wide range of end equipment.

The LM76005-Q1 device is available in the WQFN 30-pin leadless package with wettable flanks.

The LM76005-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 5 A (LM76005-Q1) of load current from an input up to 60 V. Tolerance goes up to 65 V, easing input surge protection.

The LM76005-Q1 use peak-current-mode control to provide exceptional efficiency and output accuracy in a small solution size. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

This device requires few external components and has a pinout designed for simple PCB layout with best-in-class EMI (CISPR25) and thermal performance. The small solution size and feature set of the LM76005-Q1 are designed to simplify the implementation for a wide range of end equipment.

The LM76005-Q1 device is available in the WQFN 30-pin leadless package with wettable flanks.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet LM76005-Q1 3.5-V to 60-V, 5-A Automotive Synchronous Step-Down Converter datasheet (Rev. A) PDF | HTML 02 Aug 2019
Application note Controller to Converter – Design Considerations for 24V and 48V Systems PDF | HTML 02 Oct 2024
Functional safety information LM76005-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 17 Dec 2020
Technical article Using DC/DCs buck converters to power modern safety features in commercial vehicle PDF | HTML 27 Jul 2020

Design & development

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

Evaluation board

LM76005QEVM — 3.5-V to 60-V, 5-A synchronous step-down voltage converter evaluation module

The LM76005QEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM76005 and LM76005-Q1 synchronous step-down converters. The EVM operates from an 3.5-V to 60-V input and provides a 3.3-V or 5-V output at 5 A.
User guide: PDF | HTML
Not available on TI.com
Simulation model

LM76005-Q1 PSpice Unencrypted Transient Model

SNVMBY2.ZIP (289 KB) - PSpice Model
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Calculation tool

LM76005-DESIGN-CALC — LM76005 Design Calculator

This stand-alone tool facilitates and assists with the design of a DC/DC buck regulator based on the LM76005(-Q1) converter. The user can expeditiously arrive at an optimized design to meet the application requirements.
Supported products & hardware

Supported products & hardware
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WQFN (RNP) 30 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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