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
- UVLO, Overvoltage Shutdown and Latchoff Thresholds
- N-Channel Overvoltage Power-Interrupt MOSFET Driver
- Surge Stopper Capable with Few External Components
- 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 Lifecycle
Recommended for New Designs
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
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R504 Reliability Data3/26/2018PDF347 K
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DC1543B - Demo Manual (Rev. 0)12/10/2020PDF824 K
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DC1543A - Demo Manual (Rev. B)11/26/2012PDF283K
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SnPb (Tin-Lead) BGA Packages μModule Power Products7/13/2017PDF1M
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μModule Power Products4/4/2017PDF10M
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LTM4641 TechClip - Over Current Protection3/3/2022
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LTM4641 TechClip - Efficiency Test3/3/2022
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LTM4641 TechClip - Output Overvoltage Response3/3/2022
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LTM4641 TechClip - 80V Input Surge Protection3/3/2022
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LTM4641 TechClip - Paralleled Outputs3/3/2022
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38V, 10A DC/DC μModule® Regulator with Fault Protection Powers High-End ASICs and FPGAs10/15/2018
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10A μModule Step-Down Regulator with Advanced Input and Load Protection5/7/2014
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Bench Comparison of Two Overvoltage Protection (Crowbar) Methods: MOSFET vs. Silicon Controlled Rectifier10/10/2013
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μModule Regulator Powers and Protects Low Voltage μProcessors, ASICs and FPGAs from Intermediate Bus Voltage Surges7/1/2013 LT Journal
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Prevent Your Next High Flying Product Launch From Being Grounded5/7/2013
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LTM4641 TechClips - Efficiency, Output Overvoltage Protection, Overcurrent Protection and More2/6/2013
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.

Models for the following parts are available in LTspice:
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.

Design tools for the following parts are available in LTpowerCAD:
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.
PCN-PDN Information
Support & Discussions
LTM4641 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
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.