LTM4631
Info : RECOMMENDED FOR NEW DESIGNS
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LTM4631

Ultrathin Dual 10A or Single 20A DC/DC μModule Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Models 5
1ku List Price Starting From $29.29
Features
  • Dual 10A or Single 20A Output
  • Input Voltage Range: 4.5V to 15V
  • Output Voltage Range: 0.6V to 1.8V
  • ±1.5% Maximum Total DC Output Error Over Line, Load and Temperature
  • Differential Remote Sense Amplifier
  • Current Mode Control/Fast Transient Response
  • Adjustable Switching Frequency
  • Overcurrent Foldback Protection
  • Multiphase Parallel Current Sharing with Multiple LTM4631s
  • Frequency Synchronization
  • Internal Temperature Monitor
  • Selectable Burst Mode® Operation
  • Soft-Start/Voltage Tracking
  • Output Overvoltage Protection
  • Ultrathin 16mm × 16mm × 1.91mm LGA and 16mm x 16mm x 2.51mm BGA Packages
Additional Details
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The LTM4631 is a dual 10A or single 20A output switching mode step-down DC/DC μModule® (power module) regulator. Included in the package are the switching controller, power FETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 15V, the LTM4631 supports two outputs each with an output voltage range of 0.6V to 1.8V, each set by a single external resistor. Its high efficiency design delivers up to 10A continuous current for each output. Only a few input and output capacitors are needed.

The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing and has an onboard temperature diode for device temperature monitoring. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage and overcurrent protection. The LTM4631 is offered in an ultrathin 16mm × 16mm × 1.91mm LGA and 16mm x 16mm x 2.51mm BGA packages. The LTM4631 is available with SnPb (BGA) or ROHS compliant terminal finish.

Applications

  • Telecom and Networking Equipment
  • Storage and ATCA Cards
  • Industrial Equipment
Part Models 5
1ku List Price Starting From $29.29

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Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Mar 15, 2022

- 22_0053

LTM4631 Notification of qualification for additional mold compound and additional assembly location ASE Korea.

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Aug 20, 2021

- 20_0311

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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)

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Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

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Feb 28, 2020

- 20_0123

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

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Feb 5, 2020

- 20_0127

Supplier Material Change for µModule

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PCN

Mar 15, 2022

- 22_0053

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LTM4631 Notification of qualification for additional mold compound and additional assembly location ASE Korea.

LTM4631EV#PBF

PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

LTM4631IY

PRODUCTION

LTM4631IY#PBF

PRODUCTION

Aug 20, 2021

- 20_0311

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Supplier Material Change for µModule

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PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

LTM4631IY

PRODUCTION

LTM4631IY#PBF

PRODUCTION

Jul 28, 2021

- 20_0245

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTM4631EV#PBF

PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

LTM4631IY

PRODUCTION

LTM4631IY#PBF

PRODUCTION

Jul 21, 2021

- 21_0159

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Ink Mark to Laser Mark Conversion for µModule

LTM4631EV#PBF

PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

LTM4631IY

PRODUCTION

LTM4631IY#PBF

PRODUCTION

Feb 28, 2020

- 20_0123

arrow down

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

LTM4631EV#PBF

PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

LTM4631IY

PRODUCTION

LTM4631IY#PBF

PRODUCTION

Feb 5, 2020

- 20_0127

arrow down

Supplier Material Change for µModule

LTM4631EV#PBF

PRODUCTION

LTM4631EY#PBF

PRODUCTION

LTM4631IV#PBF

PRODUCTION

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Software & Part Ecosystem

Evaluation Kits 2

reference details image

DC2268A-G

LTM4631 Demo Board | Dual 10A or Single 20A μModule Regulator

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DC2268A-G

LTM4631 Demo Board | Dual 10A or Single 20A μModule Regulator

LTM4631 Demo Board | Dual 10A or Single 20A μModule Regulator

Product Detail

Demonstration circuit 2268A-G is a high efficiency, high density, dual 10A, switch mode step-down power supply on a compact 1.5-inch × 1.2-inch PCB. It features the LTM4631 µModule® regulator. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2268A-G can deliver up to 10A maximum in each channel. As explained in the data sheet, output current derating is necessary for certain VIN, VOUT, and thermal conditions. The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the resistor jumper (R1/R2) selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 20A output solution with optional jumper resistors.

The board allows the user to program how its output ramps up and down through the TRACK/SS pin. Remote output voltage sensing is available for improved output voltage regulation at the load point. An optional input inductor L1 reduces the EMI noise for noise sensitive applications. DC2268A can be easily inserted to an edge connector for testing and debugging. These features and the availability of the LTM4631 in a compact 16mm × 16mm × 4.41mm LGA package make it ideal for use in many high density point-of-load regulation applications. The LTM4631 data sheet must be read in conjunction with the demo manual for working on or modifying the DC2268A-G.

reference details image

DC2147A

LTM4631 Demo Board | Buck Module Regulator, 4.5V ≤ VIN ≤ 15V, VOUT1/VOUT2 = 1.2V/1.0V @ 10A

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DC2147A

LTM4631 Demo Board | Buck Module Regulator, 4.5V ≤ VIN ≤ 15V, VOUT1/VOUT2 = 1.2V/1.0V @ 10A

LTM4631 Demo Board | Buck Module Regulator, 4.5V ≤ VIN ≤ 15V, VOUT1/VOUT2 = 1.2V/1.0V @ 10A

Product Detail

Demonstration circuit 2147A features the LTM4631, the high efficiency, high density, dual 10A, switch mode step-down μModule® power module regulator in an ultrathin 1.91mm height package. The input voltage is from 4.5V to 15V and the demo board provides 1.2V and 1V outputs at up to 10A maximum from each channel. As explained in the data sheet, output current derating is necessary for certain VIN , VOUT , and thermal conditions.


The board operates in continuous conduction mode in heavy load conditions. For high efficiency at low load currents, the MODE jumper (JP1) selects pulse-skipping mode for noise sensitive applications or Burst Mode® operation in less noise sensitive applications. Two outputs can be connected in parallel for a single 20A output solution with optional jumper resistors. The board allows the user to program how its output ramps up and down through the TRACK/SS pin. The output can be set up to either coincidentally or ratio-metrically track with another supply’s output. Remote output voltage sensing is available for improved output voltage regulation at the load point. These features and the availability of the LTM4631 in a compact 16mm × 16mm × 1.91mm LGA package make it ideal for use in many high density point-of-load regulation applications. The LTM4631 data sheet must be read in conjunction with this demo manual for working on or modifying the demo circuit DC2147A.

Tools & Simulations 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.

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