LTM4642

RECOMMENDED FOR NEW DESIGNS

LTM4642

20V_IN, Dual 4A or Single 8A DC/DC μModule Regulator

RECOMMENDED FOR NEW DESIGNS

Dual 4A 1V and 1.2V DC/DC μModule Regulator slide

Efficiency vs Load Current at 12V input slide

Dual 4A 1V and 1.2V DC/DC μModule Regulator

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Part Models 3

1ku List Price Starting From $18.83

Features

Small Form Factor Dual 4A Power Supply
Wide Input Voltage Range: 4.5V to 20V (2.375V Min with CPWR Bias)
Dual 180° Out-of-Phase Outputs with 4A DC
Dual Outputs with 0.6V to 5.5V Range
Output Voltage Tracking
±1.5% Maximum Total DC Output Voltage Error
Up to 95% Maximum Efficiency
Phase-Lockable Fixed Frequency 600kHz to 1.4MHz
Constant On-Time, Valley Current Mode Architecture
Selectable Burst Mode^® Operation
Output Overvoltage and Overcurrent Protection
9mm × 11.25mm × 4.92mm BGA Package

Additional Details

The LTM4642 is a complete dual 4A or single 8A step-down DC/DC μModule^® (micromodule) regulator. Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over input voltage ranges of 4.5V to 20V, (2.375V min with external CPWR bias), the LTM4642 supports two outputs with voltage ranges of 0.6V to 5.5V, set by a single external resistor. Its high efficiency design delivers 4A continuous current (5A peak) for each output.

High switching frequency and a valley current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The two outputs are interleaved with 180° phase to minimize the ripple noise and reduce the I/O capacitors.

The power module is offered in a 9mm × 11.25mm × 4.92mm BGA package. The LTM4642 is RoHS compliant with Pb-free finish.

Applications

Telecom and Networking Equipment
Servers
FPGA Power

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 3

1ku List Price Starting From $18.83

Technical Documents 4

LTM4642: 20VIN, Dual 4A or Single 8A DC/DC μModule Regulator Data Sheet 06/12/2017

R504 Reliability Data 03/26/2018

DC2194A - Demo Manual 07/28/2016

μModule Design and Manufacturing Resources 01/30/2018

Reference Materials 1

LTM4642 Project - 20Vin, Single 8A DC/DC μModule Regulator (4.5-20V to 1.8V @ 8A) 09/08/2016

Design Resources 3

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTM4642EY#PBF	56-Lead BGA (11.25mm x 9mm x 4.92mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTM4642IY	56-Lead BGA (11.25mm x 9mm x 4.92mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTM4642IY#PBF	56-Lead BGA (11.25mm x 9mm x 4.92mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTM4642EY#PBF
Pin/Package Drawing
56-Lead BGA (11.25mm x 9mm x 4.92mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTM4642IY
Pin/Package Drawing
56-Lead BGA (11.25mm x 9mm x 4.92mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LTM4642IY#PBF
Pin/Package Drawing
56-Lead BGA (11.25mm x 9mm x 4.92mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN21_0159_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Feb 28, 2020

- 20_0123

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

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN20_0123_Form

xls

Material_Report

Test Correlation Report

Other

pdf

Qualification Results Summary

Jul 23, 2019

- 19_0171

Notification of qualification of a new mold compound for the LTM4642 µModule Regulator

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN19_0171_Form

xls

Material_Report

pdf

Qualification Results Summary

Mar 13, 2019

- 19_0035

Notification of Additional Assembly Location, ASE Korea for LTM4642

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN19_0035_Form

xls

Material_Report

pdf

Other

Marking Comparison

pdf

Qualification Results Summary

Filter by Model

Part Models

Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN21_0159_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Feb 28, 2020

- 20_0123

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

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN20_0123_Form

xls

Material_Report

Test Correlation Report

Other

pdf

Qualification Results Summary

Jul 23, 2019

- 19_0171

Notification of qualification of a new mold compound for the LTM4642 µModule Regulator

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN19_0171_Form

xls

Material_Report

pdf

Qualification Results Summary

Mar 13, 2019

- 19_0035

Notification of Additional Assembly Location, ASE Korea for LTM4642

LTM4642EY#PBF

PRODUCTION

LTM4642IY

PRODUCTION

LTM4642IY#PBF

PRODUCTION

pdf

PCN19_0035_Form

xls

Material_Report

pdf

Other

Marking Comparison

pdf

Qualification Results Summary

Companion Parts 2

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LTC2970 LTC2970-1		Dual I²C Power Supply Monitor and Margining Controller

DC2194A

LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A

LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A

Download

DC2194A

LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A

Buy Now View Details

Product Detail

Demonstration circuit of DC2194A features the LTM4642IY, the wide input voltage, high efficiency and power density, dual 4A or single 8A DC/DC step-down μModule regulator. The step-down regulator operates from an input voltage range of 4.5V to 20V (or 2.5V min. with 5V external bias voltage at CPWR) and provides an adjustable output voltage range from 0.6V to 5V at 4A load current per channel. The part is capable of operating in dual phase single output, delivers up to 8A load current with interleaved two phases at 180 degrees. Differential output voltage sensing is available on Channel 1 for applications requiring more accurate output load regulation. A user-selectable mode input is provided to allow users to trade off ripple noise for light load efficiency: Discontinuous Mode (DCM) of operation delivers higher efficiency at light load while Continuous Conduction Mode (CCM) is preferred for noise sensitive applications.

Resources

PDF

DC2194A - Demo Manual

1.00M

ZIP

DC2194A - Design Files

1.00M

PDF

DC2194A - Schematic

58.00K

DC2194A

LTM4642 Demo Board | Dual Buck μModule Regulator, 2.5V ≤ VIN ≤ 20VIN, VOUT1 = 1.8V @ 4A, VOUT2 = 1.2V @ 4A

LTspice 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.

Lt Spice

LTM4642 Demo Circuit - Wide Input Voltage, High Efficiency, Dual Buck Regulator (4.5-20V to 1.8V @ 4A, 1.2V @ 4A)

6.00K

Lt Spice

LTM4642 - ?Module Regulators

3.24 K

LTpowerCAD 2

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 download and documentation

Simulation Model

LTpowerCAD

LTM4642 Project – Dual Phase Single Output (4.5V-20V to 1.8V @ 8A)

LTpowerCAD

LTM4642 Project - 20Vin, Dual 4A DC/DC μModule Regulator (4.5-20V to 1.8V @ 4A & 1.2V @ 4A)

Intel Stratix 10 FPGA PCIe Development Kit

Stratix 10 GX PCIE FPGA Development Kit Block Diagram

Stratix 10 GX PCIE FPGA Development Kit (Recommended Simplified Power Tree: 12Vin to required I/O voltages)

Stratix 10 GX PCIE FPGA Development Kit (Actual Power Tree representative of components used on board)

Download

Intel Stratix 10 FPGA PCIe Development Kit

Circuits from the lab

Features and Benefits

Analog Devices has worked closely with Intel PSG to develop verified power solutions that optimize cost, size and efficiency in high performance applications.
The validated power solutions include uModules power products that address time and space constraints while delivering high efficiency, reliability, and low noise.
The actual power tree represents the best solution at time of design.
A recommended power tree has also been included to present the ideal solution at time of Stratix 10 GX PCIe development kit release. An updated alternate version of the power tree represents the latest solutions available from Analog Devices. For many applications, an intermediate rail is not ideal, so recommendations an alternate power tree that allow for direct power conversion from 12V input is provided below.

View Detailed Reference Design