LTM4641
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4641

38V, 10A DC/DC µModule (Power Module) Regulator with Advanced Input and Load Protection

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 5
1ku List Price Starting From $30.55
Features
  • 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
Additional Details
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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
Part Models 5
1ku List Price Starting From $30.55

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Nov 20, 2023

- 23_0180

New Tray Design for BGA Package

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Jul 21, 2021

- 21_0159

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Feb 28, 2020

- 20_0123

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

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Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Nov 20, 2023

- 23_0180

arrow down

New Tray Design for BGA Package

LTM4641EY#PBF

PRODUCTION

LTM4641IY

PRODUCTION

LTM4641IY#PBF

PRODUCTION

LTM4641MPY

PRODUCTION

LTM4641MPY#PBF

PRODUCTION

Jul 21, 2021

- 21_0159

arrow down

Ink Mark to Laser Mark Conversion for µModule

LTM4641EY#PBF

PRODUCTION

LTM4641IY

PRODUCTION

LTM4641IY#PBF

PRODUCTION

LTM4641MPY

PRODUCTION

LTM4641MPY#PBF

PRODUCTION

Feb 28, 2020

- 20_0123

arrow down

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

LTM4641EY#PBF

PRODUCTION

LTM4641IY

PRODUCTION

LTM4641IY#PBF

PRODUCTION

LTM4641MPY

PRODUCTION

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PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC1543A

OBSOLETE: LTM4641 Demo Board | Buck µModule Regulator, Input and Load Protection, 4.5V ≤ VIN ≤ 38V, VOUT = 0.6V to 6V at 10A

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DC1543A

OBSOLETE: LTM4641 Demo Board | Buck µModule Regulator, Input and Load Protection, 4.5V ≤ VIN ≤ 38V, VOUT = 0.6V to 6V at 10A

OBSOLETE: LTM4641 Demo Board | Buck µModule Regulator, Input and Load Protection, 4.5V ≤ VIN ≤ 38V, VOUT = 0.6V to 6V at 10A

Product Detail

This evaluation board is obsolete and no longer recommended. The replacement board is the DC1543B.

Demonstration circuit 1543A features the LTM4641, a high efficiency, high density switch mode step-down power µModule regulator with superior input and load protection features. The input voltage range is from 4.5V to 38V. The output voltage is jumper programmable from 0.8V to 6V with a rated load current of 10A. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions.

reference details image

DC1543B

LTM4641 Demo Board | 38V, 10A, Step-Down μModule Regulator with Advanced Input and Load Protection

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DC1543B

LTM4641 Demo Board | 38V, 10A, Step-Down μModule Regulator with Advanced Input and Load Protection

LTM4641 Demo Board | 38V, 10A, Step-Down μModule Regulator with Advanced Input and Load Protection

Product Detail

Demonstration circuit 1543B features the LTM4641, a high efficiency, high density switch mode step-down power μModule regulator with superior input and load protection features. The input voltage range is from 4.5V to 38V. The output voltage is jumper programmable from 0.8V to 6V with a rated load current of 10A. Derating is necessary for certain VIN, VOUT, frequency and thermal conditions. DC1543B offers the TRACK/SS pin allowing the user to program output tracking or soft-start period. The DC1543B allows the user to enable/disable input undervoltage protection; input latching/non-latching overvoltage protection; and latching/non-latching overtemperature protection.

Higher efficiency at low load currents is achieved by setting the MODE pin jumper to DCM. The LTM4641 data sheet must be read in conjunction with the demo manual prior to working on or modifying demo circuit 1543B.

Tools & Simulations

Tools & Simulations 2

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.

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