LTM4637

RECOMMENDED FOR NEW DESIGNS

20A DC/DC μModule (Power Module) Step-Down Regulator

Data Sheet (Rev. D) Product Selection Table

Part Models: 5
1ku List Price: Starting From $26.01

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Part Details

Complete 20A Switch Mode Power Supply
4.5V to 20V Input Voltage Range
0.6V to 5.5V Output Voltage Range
±1.5% Total DC Output Voltage Error (–40°C to 125°C)
Differential Remote Sense Amplifier for Precision Regulation for (V_OUT ≤ 3.3V)
Current Mode Control/Fast Transient Response
Parallel Current Sharing (Up to 80A)
Frequency Synchronization
Selectable Pulse-Skipping or Burst Mode^® Operation
Soft-Start/Voltage Tracking
Up to 88% Efficiency (12V_IN, 1.8V_OUT)
Overcurrent Foldback Protection
Output Overvoltage Protection
Internal Temperature Monitor
Overtemperature Protection
15mm × 15mm × 4.32mm LGA and 15mm × 15mm × 4.92mm BGA Packages
SnPb (BGA) or RoHS Compliant (LGA and BGA) Finish

Part Models: 5
1ku List Price: Starting From $26.01

Documentation

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
LTM4637EV#PBF	133-Lead LGA (15mm x 15mm x 4.32mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4637EY#PBF	133-Lead BGA (15mm x 15mm x 4.92mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4637IV#PBF	133-Lead LGA (15mm x 15mm x 4.32mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4637IY	133-Lead BGA (15mm x 15mm x 4.92mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTM4637IY#PBF	133-Lead BGA (15mm x 15mm x 4.92mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 14, 2024 - 24_0098 LTM4637 LGA change of FET and substrate
		PCN24_0098_Form Material_Report Qualification Results Summary
LTM4637EV#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
Jul 28, 2021 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTM4637EV#PBF	PRODUCTION
LTM4637EY#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#PBF	PRODUCTION
Jul 21, 2021 - 21_0159 Ink Mark to Laser Mark Conversion for µModule
		PCN21_0159_Form Material_Report Delta Qualification Matrix
LTM4637EV#PBF	PRODUCTION
LTM4637EY#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#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
LTM4637EV#PBF	PRODUCTION
LTM4637EY#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#PBF	PRODUCTION
Feb 5, 2020 - 20_0127 Supplier Material Change for µModule
		PCN20_0127_Form Material_Report Qualification Results Summary
LTM4637EV#PBF	PRODUCTION
LTM4637EY#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#PBF	PRODUCTION
Aug 12, 2019 - 19_0189 LTM4637 - Notification of Qualification of New Mold Compound
		PCN19_0189_Form Material_Report Qualification Results Summary
LTM4637EV#PBF	PRODUCTION
LTM4637EY#PBF	PRODUCTION
LTM4637IV#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#PBF	PRODUCTION
Jul 3, 2023 - 23_0094 LTM4637 and LTM4639 - FET and SUBSTRATE (BGA Package ONLY)
		PCN23_0094_Form Material_Report Qualification Results Summary
LTM4637EY#PBF	PRODUCTION
LTM4637IY	PRODUCTION
LTM4637IY#PBF	PRODUCTION

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
µModule Buck Regulators 2
LTM4628	PRODUCTION	Dual 8A or Single 16A DC/DC μModule (Power Module) Regulator
LTM4627	PRODUCTION	15A DC/DC μModule (Power Module) Regulator
Digital Power System Managers 1
LTC2977	RECOMMENDED FOR NEW DESIGNS	8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

LTM4637

LTpowerCAD 1

LTM4637 Project - 20A Step-Down μModule Regulator (4.5-20V to 1.8V @ 20A)

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

LTM4637EV Demo Board | µModule Regulator, 4.5V ≤ VIN ≤ 20V, VOUT = 1V to 1.8V @ 20A

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Product Details

Demonstration circuit DC1872A features the LTM4637EV, a high efficiency, high density switch mode step-down power μModule^® regulator. The input voltage range is from 4.5V to 20V. The output voltage is jumper programmable from 1.0V to 1.8V with a rated load current of 20A. Derating is necessary for certain V_IN, V_OUT, frequency and thermal conditions.

Resources

DC1872A - Schematic
76.00K

DC1872A - Design Files
3.00M

DC1872A - Demo Manual
2.00M

Reference Designs

Arria 10 (Rev E3- Linear Technology) Dev Kit

View Detailed Reference Design

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications