Data Sheet
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Overview

Features and Benefits

  • Wide Operating Input Voltage Range: 4.5V to 38V
  • 10A DC Typical, 12A Peak Output Current
  • Output Range: 0.6V to 6V
  • ±1.5% Maximum Total Output DC Voltage Error
  • Differential Remote Sense Amplifier for POL Regulation
  • Internal Temperature, Analog Indicator Output
  • Overcurrent Foldback and Overtemperature Protection
  • Current Mode Control/Fast Transient Response
  • Parallelable for Higher Output Current
  • Selectable Pulse-Skipping Operation
  • Soft-Start/Voltage Tracking/Pre-Bias Start-Up
  • 15mm × 15mm × 5.01mm BGA Package
  • SnPb or RoHS Compliant Finish
 Input Protection
  • UVLO, Overvoltage Shutdown and Latchoff Thresholds
  • N-Channel Overvoltage Power-Interrupt MOSFET Driver
  • Surge Stopper Capable with Few External Components
Load Protection
  • Robust, Resettable Latchoff Overvoltage Protection
  • N-Channel Overvoltage Crowbar Power MOSFET Driver

Product Details

The LTM4641 is a switch mode step-down DC/DC μModule® (power module) regulator with advanced input and load protection features. Trip detection thresholds for the following faults are customizable: input undervoltage, overtemperature, input overvoltage and output overvoltage. Select fault conditions can be set for latchoff or hysteretic restart response—or disabled. Included in the package are the switching controller and housekeeping ICs, power MOSFETs, inductor, overvoltage drivers, biasing circuitry and supporting components. Operating from input voltages of 4V to 38V (4.5V start-up), the device supports output voltages from 0.6V to 6V, set by an external resistor network remote sensing the point-of-load’s voltage.

The LTM4641’s high efficiency design can deliver up to 10A continuous current with a few input and output capacitors. The regulator’s constant on-time current mode control architecture enables high step-down ratios and fast response to transient line and load changes. The LTM4641 is offered in a 15mm × 15mm × 5.01mm with SnPb or RoHS compliant terminal finish.

Applications

  • Ruggedized Electronics
  • Avionics and Industrial Equipment

Product Categories

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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Documentation & Resources

  • View All (21)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (2)
  • Design Notes (1)
  • Product Selector Card (2)
  • Informational (1)
  • Videos (6)
  • Press Releases (1)
  • Technical Articles (5)
  • Webcasts (1)
    • Document Type
    Technical Articles

    Tools & Simulations

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    To launch ready-to-run LTspice demonstration circuits for this part:

    Step 1: Download and install LTspice on your computer.

    Step 2: Click on the link in the section below to download a demonstration circuit.

    Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

    LTspice

    LTspice Simulations

    LTM4641 Demo Circuit - 10A Step-Down µModule Regulator with Input and Output OVP (4.5-38V to 1V @ 10A)

    Models for the following parts are available in LTspice:

    LTM4641

    LTpowerCAD

    LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

    To open the project file for this circuit:

    Step 1: Download and install LTpowerCAD on your computer.

    Step 2: Click on the link(s) in the section below to download part-specific project files.

    Step 3: If the project file doesn't run, right-click the link and select "Save Target As." Then start the LTpowerCAD tool and open the project file by selecing "Open Project" from the "File" menu.

    LTPowerCAD

    LTpowerCAD Project Files

    LTM4641 Project - 38V Step-Down µModule Regulator with Input & Load Protection (4.5-38V to 3.3V @ 10A)

    Design tools for the following parts are available in LTpowerCAD:

    LTM4641

    Product Recommendations

    LTM4641 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    LTM4641 Material Declaration
    Quality And Reliability
    Symbols and Footprints

    PCN-PDN Information

    Select Model
    • LTM4641EY#PBF Production
    • LTM4641IY Production
    • LTM4641IY#PBF Production
    • LTM4641MPY Production
    • LTM4641MPY#PBF Production

    Support & Discussions

    LTM4641 Discussions

    RE: How to configure LTM4641 for VOUT=5V in LT-Spice
    All LTM4641 Discussions
    LTM4641 Contact ADI Technical Support »
    LTM4641 Ask your question »
    LTM4641 Contact ADI Technical Support » LTM4641 Ask your question »

    Sample & Buy


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    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.