LTM4676

Obsolete

LTM4676

Dual 13A or Single 26A μModule (Power Module) Regulator with Digital Power System Management

Obsolete

Suggested Replacement Parts

Dual 13A μModule Regulator with Digital Interface for Control and Monitoring*

LTM4676A

Dual 13A or Single 26A μModule Regulator with Digital Power System Management

Obsolete

Part Details

Dual 13A μModule Regulator with Digital Interface for Control and Monitoring* slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Product Package 1 slide

Dual 13A μModule Regulator with Digital Interface for Control and Monitoring*

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Product Package 1

Dual 13A μModule Regulator with Digital Interface for Control and Monitoring* slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN slide

Product Package 1 slide

Dual 13A μModule Regulator with Digital Interface for Control and Monitoring*

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Using PMBus and LTpowerPlay to Monitor Telemetry and Margin VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN

Product Package 1

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Part Models 3

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Features

Dual, Fast, Analog Loops with Digital Interface for Control and Monitoring
Wide Input Voltage Range: 4.5V to 26.5V
Output Voltage Range: 0.5V to 5.4V (4V on V_OUT0)
±1% Maximum DC Output Error Over Temperature
±2.5% Current Readback Accuracy at 10A Load
400kHz PMBus-Compliant I²C Serial Interface
Integrated 16-Bit ΔΣ ADC
Constant Frequency Current Mode Control
Parallel and Current Share Multiple Modules
16 Slave Addresses; Rail/Global Addressing
16mm × 16mm × 5.01mm BGA Package

Readable Data:

Input and Output Voltages, Currents, and Temperatures
Running Peak Values, Uptime, Faults and Warnings
Onboard EEPROM Fault Log Record

Writable Data and Configurable Parameters:

Output Voltage, Voltage Sequencing and Margining
Digital Soft-Start/Stop Ramp
OV/UV/OT, UVLO, Frequency and Phasing

Additional Details

The LTM4676 is a dual 13A or single 26A step-down uModule^® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I²C-based digital interface protocol. The LTM4676 is comprised of fast analog control loops, precision mixedsignal circuitry, EEPROM, power MOSFETs, inductors and supporting components.

The LTM4676’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay^™ GUI and DC1613 USB-to-PMBus converter and demo kits are available.

The LTM4676 is offered in a 16mm × 16mm × 5.01mm BGA package available with SnPb or RoHS compliant terminal finish.


Part Number	Turn-on Start-up Time (MAX) (ms)	V_IN Range (V)	V_OUT Range (V)	Pin-compatible
LTM4676	170	4.5 to 26.5	0.5V to 4 (CH0) 0.5 to 5.5 (Both CH)	Yes
LTM4676A	70	4.5 to 17	0.5 to 5.5 (Both CH)	Yes

Applications

System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments
Telecom, Datacom, and Storage Systems

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Part Models 3

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Documentation

Technical Documents 15

LTM4676: Dual 13A or Single 26A μModule (Power Module) Regulator with Digital Power System Management Data Sheet 09/15/2015

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R504 Reliability Data 03/26/2018

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DC2087A - Demo Manual 02/10/2014

DC2269A-A - Demo Manual 05/18/2015

DC1811B-A - Demo Manual 06/11/2015

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AN-137: Accurate Temperature Sensing with an External P-N Junction 09/20/2012

AN-152: Power System Management Addressing (Rev.A) 07/12/2016

AN-145: Overview of the EEPROM in LTC PSM Devices 07/20/2015

AN-153: Linduino for Power System Management 12/05/2016

AN-166: In Flight Update with Linduino 04/10/2017

AN-155: Fault Log Decoding with Linduino PSM 01/26/2017

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DN524 - Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power 05/05/2015

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Power Systems Management 02/12/2018

μModule Design and Manufacturing Resources 01/30/2018

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LTM4676 to LTM4676A - Migration Guide 08/15/2017

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Reference Materials 9

μModule Regulator with READ/WRITE Telemetry 12/03/2013

μModule Power Products 04/04/2017

SnPb (Tin-Lead) BGA Packages μModule Power Products 07/13/2017

Digital Power System Management 04/04/2017

LTC297x GitHub Linux Driver Source Code 08/30/2024

Component on Package uModule DC/DC Regulators - Less Heat, More Power 06/26/2024

Video

3

Thumbnail Image

Video

2017-09-18

A Guide to Ordering Custom Programmed Digital Power System Management Devices

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Thumbnail Image

Video

2017-09-18

Dual 13A or Single 26A μModule Regulator Integrates Digital Power System Management

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Video

2017-09-18

07:46

What Is Digital Power System Management?

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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
LTM4676EY#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTM4676IY	144-Lead BGA (16mm x 16mm x 5.01mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LTM4676IY#PBF	144-Lead BGA (16mm x 16mm x 5.01mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LTM4676EY#PBF
Pin/Package Drawing
144-Lead BGA (16mm x 16mm x 5.01mm)
Documentation

HTML Material Declaration

external-link

HTML Reliablity Data

external-link

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

LTM4676IY
Pin/Package Drawing
144-Lead BGA (16mm x 16mm x 5.01mm)
Documentation

HTML Material Declaration

external-link

HTML Reliablity Data

external-link

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

LTM4676IY#PBF
Pin/Package Drawing
144-Lead BGA (16mm x 16mm x 5.01mm)
Documentation

HTML Material Declaration

external-link

HTML Reliablity Data

external-link

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

Software & Part Ecosystem

Software 1

LTC297x GitHub Linux Driver Source Code NEW

View Evaluation Software

external link

Companion Parts 3

Parts	Product Life Cycle	Description
µModule Buck Regulators2
LTM4620A	PRODUCTION	Dual 13A or Single 26A DC/DC μModule (Power Module) Regulator
LTM4630	RECOMMENDED FOR NEW DESIGNS	Dual 18A or Single 36A DC/DC μModule (Power Module) Regulator
Digital Power System Managers1
LTC2977	RECOMMENDED FOR NEW DESIGNS	8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

Alternative Parts 3

Parts	Product Life Cycle	Description
LTM4675	RECOMMENDED FOR NEW DESIGNS	Dual 9A or Single 18A μModule Regulator with Digital Power System Management
LTM4676A	RECOMMENDED FOR NEW DESIGNS	Dual 13A or Single 26A μModule Regulator with Digital Power System Management
LTM4677	RECOMMENDED FOR NEW DESIGNS	Dual 18A or Single 36A μModule (Power Module) Regulator with Digital Power System Management

Evaluation Kit

reference details image

DC2087A

LTM4676 Demo Board | Buck µModule, 4.5V ≤ VIN ≤ 16V, VOUT = 1V @ 26A

DC2087A - Schematic

DC2087A

LTM4676 Demo Board | Buck µModule, 4.5V ≤ VIN ≤ 16V, VOUT = 1V @ 26A

Buy Now View Details

Product Detail

Demonstration circuit 2087A is a single-output, high efficiency, high density, μModule^®regulator with 4.5V to 16V input range. It can supply 26A maximum load current. The demo board has a LTM4676 μModule regulator, which is a dual 13A or single 26A step-down regulator with PMBus power system management. Please see LTM4676 data sheet for more detailed information.

Resources

PDF

DC2087A - Demo Manual

2.00M

ZIP

DC2087A - Design Files

1.00M

PDF

DC2087A - Schematic

101.00K

Show More

reference details image

DC1811B-KIT

LTM4676 with DC1613A Demo Kit | LTM4676 (DC1811) with USB-to-PMBus Adapter (DC1613A)

DC1811B - Schematic

DC1811B-KIT

LTM4676 with DC1613A Demo Kit | LTM4676 (DC1811) with USB-to-PMBus Adapter (DC1613A)

Buy Now View Details

Product Detail

Demonstration circuit 1811B-A is a dual-output, high efficiency, high density, μModule^® regulator with 4.5V to 26.5V input range. Each output can supply 13A maximum load current. The demo board has a LTM4676 μModule regulator, which is a dual 13A or single 26A step-down regulator with PMBus power system management. Please see LTM4676 data sheet for more detailed information.

Resources

PDF

DC1613A - Schematic

160.00K

ZIP

DC1613A - Design File

1.00M

PDF

DC1613A - Demo Manual

303.00K

PDF

DC1811B-A - Demo Manual

1.00M

ZIP

DC1811B - Design Files

2.00M

PDF

DC1811B_ - Schematic

94.00K

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reference details image

DC2269A-A

LTM4676 Plug-In Demo Board | 1.5" × 1.2" with Edge Connector, Dual 13A Buck μModule with PMBus, 4.5V ≤ VIN ≤ 26.5V, VOUT0 = 1V @ 13A, VOUT1 = 1.8V @ 13A

DC2269A - Schematic

DC2269A-A

LTM4676 Plug-In Demo Board | 1.5" × 1.2" with Edge Connector, Dual 13A Buck μModule with PMBus, 4.5V ≤ VIN ≤ 26.5V, VOUT0 = 1V @ 13A, VOUT1 = 1.8V @ 13A

Buy Now View Details

Product Detail

Demonstration circuit 2269A-A is a dual-output, high efficiency, high density, μModule^® supply on a small 1.5" × 1.2" PCB board with 4.5V to 26.5V input range. Each output can supply 13A maximum load current. The demo board has a LTM4676 μModule regulator, which is a dual 13A or single 26A step-down regulator with PMBus power system management. The DC2269A can be easily inserted to an edge connector for testing and debugging. It has an optional input filter inductor (L1) to further reduce input ripple EMI noise.

Resources

PDF

DC2269A - Schematic

59.00K

PDF

DC2269A-A - Demo Manual

1.00M

ZIP

DC2269A - Design Files

4.00M

Show More

evaluation kit item images

DC2087A

LTM4676 Demo Board | Buck µModule, 4.5V ≤ VIN ≤ 16V, VOUT = 1V @ 26A

evaluation kit item images

DC1811B-KIT

LTM4676 with DC1613A Demo Kit | LTM4676 (DC1811) with USB-to-PMBus Adapter (DC1613A)

evaluation kit item images

DC2269A-A

LTM4676 Plug-In Demo Board | 1.5" × 1.2" with Edge Connector, Dual 13A Buck μModule with PMBus, 4.5V ≤ VIN ≤ 26.5V, VOUT0 = 1V @ 13A, VOUT1 = 1.8V @ 13A

Tools & Simulations

LTspice 7

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

LTM4676 Demo Circuit - Single 26A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-16V to 1V @ 26A)

Lt Spice

LTM4676/LTM4620A Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @100A)

Lt Spice

LTM4676 Demo Circuit - High Efficiency, Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 50A)

Lt Spice

LTM4676 Demo Circuit - Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 75A)

Lt Spice

LTM4676 Demo Circuit - High Efficiency, Poly-Phase µModule Step-Down Regulator with Power System Management (5.75-16V to 1V @ 100A)

Lt Spice

LTM4676/LTM4630 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @130A)

Lt Spice

LTM4676 Demo Circuit - Dual 13A µModule Buck Regulator with Digital Interface for Control & Monitoring (4.5-26.5V to 1V @ 13A & 1.8V @ 13A)

Linduino 4

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

Linduino download and documentation

Code Files

Linduino

LTM4676 - Linduino Header File

LTM4676 - Linduino CPP File

LTM4676 - DC1989A.ino

LTM4676 - DC1811B.ino

LTpowerCAD 5

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

LTM4676 Project - 50A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 50A)

LTpowerCAD

LTM4676 Project - Dual Step-Down μModule Regulator (4.5-14V to 1V @ 13A & 1.8V @ 13A)

LTpowerCAD

LTM4676 Project - 100A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 100A)

LTpowerCAD

LTM4676 Project - 26A Step-Down μModule Regulator (4.5-16V to 1.2V @ 26A)

LTpowerCAD

LTM4676 Project - 75A PolyPhase Step-Down μModule Regulator (4.5-16V to 1V @ 75A)

LTpowerPlay®

LTpowerPlay®

LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Reference Designs

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Arria 10 SoC - Top View

Arria 10 SoC - Bottom View

Arria 10 Soc Dev Kit Block Diagram

Arria 10 SoC Power Tree

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Arria 10 SoC - Top View

Arria 10 SoC - Bottom View

Arria 10 Soc Dev Kit Block Diagram

Arria 10 SoC Power Tree

Arria 10 SoC - Top View

Arria 10 SoC - Bottom View

Arria 10 Soc Dev Kit Block Diagram

Arria 10 SoC Power Tree

altera-arria-10-soc-development-kit

Circuits from the lab

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

View Detailed Reference Design

Part Used 8

LT1389

LTC2497

LTC2977

LT3010
LT3010-5

LTC3025-1
LTC3025-2
LTC3025-3
LTC3025-4

LTC3026-1

LTM4676

LTM4677

Arria 10 SoC - Top View

altera-arria-10-soc-development-kit

Latest Discussions

5 Years Ago

Synchronizing multiple uModules

5 Years Ago

RE: LTM4676 output voltage error

View related discussion on EngineerZone

Software & Part Ecosystem

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Reference Designs

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