LTM4642

Name: LTM4642
Brand: Analog Devices
Price: 23.82 USD
Availability: InStock

RECOMMENDED FOR NEW DESIGNS

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

Data Sheet Product Selection Table

Part Models: 3
1ku List Price: Starting From $23.82

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Overview

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

Part Models: 3
1ku List Price: Starting From $23.82

Documentation

Data Sheet 1

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

User Guide 1

DC2194A - Demo Manual 07/28/2016

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)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTM4642IY	56-Lead BGA (11.25mm x 9mm x 4.92mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTM4642IY#PBF	56-Lead BGA (11.25mm x 9mm x 4.92mm)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report
LTM4642EY#PBF	PRODUCTION
LTM4642IY	PRODUCTION
LTM4642IY#PBF	PRODUCTION
Feb 28, 2020 - 20_0123 Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia
		PCN20_0123_Form Material_Report Test Correlation Report Other Qualification Results Summary
LTM4642EY#PBF	PRODUCTION
LTM4642IY	PRODUCTION
LTM4642IY#PBF	PRODUCTION
Jul 23, 2019 - 19_0171 Notification of qualification of a new mold compound for the LTM4642 µModule Regulator
		PCN19_0171_Form Material_Report Qualification Results Summary
LTM4642EY#PBF	PRODUCTION
LTM4642IY	PRODUCTION
LTM4642IY#PBF	PRODUCTION
Mar 13, 2019 - 19_0035 Notification of Additional Assembly Location, ASE Korea for LTM4642
		PCN19_0035_Form Material_Report Other Marking Comparison Qualification Results Summary
LTM4642EY#PBF	PRODUCTION
LTM4642IY	PRODUCTION
LTM4642IY#PBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Power System Management (PSM) & Sequencers 2
LTC2975	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
LTC2970 LTC2970-1		Dual I²C Power Supply Monitor and Margining Controller

Tools & Simulations

LTspice 1

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

Models for the following parts are available in LTspice:

LTM4642

LTpowerCAD 2

Design tools for the following parts are available in LTpowerCAD:

LTM4642

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.

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.

Evaluation Kits

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

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Product Details

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

DC2194A - Design Files
4/21/2016

DC2194A - Schematic
3/29/2016

DC2194A - Demo Manual
7/28/2016

Reference Designs

View Detailed Reference Design

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.