LTM4668

RECOMMENDED FOR NEW DESIGNS

LTM4668

Quad DC/DC µModule Regulator with Configurable 1.2A Output Array

RECOMMENDED FOR NEW DESIGNS

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Features

Quad Output Step-Down µModule Regulator with 1.2A per Output Channel
Wide Input Voltage Range: 2.7V to 17V
0.6V to 1.8V Output Voltage
1.2A DC, Parallelable, Output Current Each Channel
±1.5% Total Output Voltage Regulation
100% Duty Cycle Operation

Current Mode Control, Fast Transient Response
External Frequency Synchronization
Selectable Burst Mode^® Operation
Power Good Indicator
Over Voltage, Current and Temperature Protection
6.25mm × 6.25mm × 2.1mm BGA Package
Pin Compatible with LTM4668A (0.6V to 5.5V
Output, 2.25MHz)

Additional Details

The LTM4668 is a quad DC/DC step-down µModule (micromodule) regulator with 1.2A DC current per output. Outputs can be paralleled in an array for up to 4.8A capability. Included in the package are the switching controllers, power FETs, inductors and support components. Operating over an input voltage range of 2.7V to 17V, the LTM4668 supports an output voltage range of 0.6V to 1.8V. Only bulk input and output capacitors are needed. The device supports frequency synchronization, poly-phase operation, selectable Burst Mode operation, 100% duty cycle and low I_Q operation. Its high switching frequency and a current mode architecture enables a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage, overcurrent and overtemperature protection. The power module is offered in a space saving and thermally enhanced 6.25mm × 6.25mm × 2.1mm BGA package. The LTM4668 is available with RoHS compliant terminal finish.

Applications

Telecom, Networking and Industrial Equipment
Multi-Rail Point of Load Regulation
FPGAs, DSPs and ASICs Application

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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 2

1ku List Price Starting From $7.71

Technical Documents 5

LTM4668: Quad DC/DC µModule Regulator with Configurable 1.2A Output Array Data Sheet (Rev.D) 08/23/2019

R504 Reliability Data 03/26/2018

DC2785A-A - Demo Manual 11/20/2019

3.6 V Input, Dual Output µModule Buck Regulator Produces 2 A per Channel in a 3 mm × 4 mm Footprint 03/01/2020

When Just One Inductor is Enough to Design a More Compact Power Supply 12/15/2022

Reference Materials 1

Power You Can Trust: Achieving Efficient Battery-Powered Solutions 11/07/2023

Design Resources 2

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
LTM4668EY#PBF	49-Lead BGA (6.25mm x 6.25mm x 2.10mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTM4668IY#PBF	49-Lead BGA (6.25mm x 6.25mm x 2.10mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTM4668EY#PBF
Pin/Package Drawing
49-Lead BGA (6.25mm x 6.25mm x 2.10mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

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

LTM4668IY#PBF
Pin/Package Drawing
49-Lead BGA (6.25mm x 6.25mm x 2.10mm)
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

Sep 12, 2023

- 23_0160

LTM4668A/LTM4668 Data Sheet Revision

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN23_0160_Form

xls

Material_Report

pdf

Datasheet_Markup_LTM4668_A

Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN21_0159_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Mar 20, 2020

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN19_0067_Form

xls

Material_Report

pdf

Qualification Results Summary

pdf

Other

Feb 28, 2020

- 20_0123

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

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN20_0123_Form

xls

Material_Report

Test Correlation Report

Other

pdf

Qualification Results Summary

Filter by Model

Part Models

Product Lifecycle

PCN

Sep 12, 2023

- 23_0160

LTM4668A/LTM4668 Data Sheet Revision

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN23_0160_Form

xls

Material_Report

pdf

Datasheet_Markup_LTM4668_A

Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN21_0159_Form

xls

Material_Report

xlsm

Delta Qualification Matrix

Mar 20, 2020

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN19_0067_Form

xls

Material_Report

pdf

Qualification Results Summary

pdf

Other

Feb 28, 2020

- 20_0123

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

LTM4668EY#PBF

PRODUCTION

LTM4668IY#PBF

PRODUCTION

pdf

PCN20_0123_Form

xls

Material_Report

Test Correlation Report

Other

pdf

Qualification Results Summary

DC2785A-A

LTM4668 Tiny Quad 1.2A Output Step-Down µModule Regulator

DC2785A-A

LTM4668 Tiny Quad 1.2A Output Step-Down µModule Regulator

Buy Now View Details

Product Detail

Demonstration circuit 2785A-A features the LTM4668 µModule^® regulator, a Quad 1.2A high efficiency step-down regulator. DC2785A-A has an operating input voltage range of 2.7V to 17V and can provide an output current of up to 1.5A. The output voltage can be programmed from 0.6V up to 1.8V. The LTM4668 is a complete DC/DC point of load regulator in a thermally enhanced 6.25mm × 6.25mm × 2.1mm BGA package requiring only a few input and output capacitors.

External clock synchronization is available through the CLKIN turret. The LTM4668 data sheet must be read in conjunction with this demo manual for working on or modifying demo circuit 2785A-A.

Resources

PDF

DC2785A-A - Demo Manual

823.45 K

PDF

DC2785A - Schematic

88.84 K

ZIP

DC2785A-A - Design Files

8.26 M

DC2785A-A

LTM4668 Tiny Quad 1.2A Output Step-Down µModule Regulator

LTspice 1

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

LTM4668 - ?Module Regulators

2.37 K

LTpowerCAD 1

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

LTM4668 Project - DC2785A-A 2.7-16Vin to 1Vout1/1.2A, 1.2Vout2/1.2A, 1.5Vout3/1.2A, 1.8Vout4/1.2A, 1MHz

Intel Agilex 7 FPGA F-series Development Kit (Alternative µModule)

Altera FPGA

Intel Agilex 7 FPGA F-series Development Kit (Alternative µModule)

Circuits from the lab

Altera FPGA

Features and Benefits

Intel Agilex 7 F-Series devices target a wide range of applications across many markets. This series offers transceiver rates up to 58 Gbps, advanced DSP blocks supporting multiple precisions of fixed-point and floating-point operations, and high-performance crypto blocks.
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.
ADI provides supporting documentation including LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly. Our team can provide samples and/or evaluation boards for quick validation that can speed time to market in the most complex applications.
For a complete list power designs and use cases, please contact your local FAE.

View Detailed Reference Design

Part Used 10

LTM4700

LTM4702

LTM4623

LTM4657

LTM4668

LTM4705

ADP121

LTC4365

LTM4668A

LTM4643

Intel Agilex 7 FPGA F-series Development Kit (P-Tile and E-Tile)

Altera FPGA

Intel Agilex 7 FPGA F-series Development Kit (P-Tile and E-Tile)

Circuits from the lab

Altera FPGA

Features and Benefits

Intel Agilex 7 F-Series devices target a wide range of applications across many markets. This series offers transceiver rates up to 58 Gbps, advanced DSP blocks supporting multiple precisions of fixed-point and floating-point operations, and high-performance crypto blocks.
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.
ADI provides supporting documentation including LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly. Our team can provide samples and/or evaluation boards for quick validation that can speed time to market in the most complex applications.
For a complete list power designs and use cases, please contact your local FAE.

View Detailed Reference Design