LTM4633 - Triple 10A Step-Down DC/DC μModule (Power Module) Regulator

Features

  • Three Independent 10A DC Output Current Regulator Channels
  • Input Voltage Range: 4.7V to 16V
  • 2.375V to 16V with External 5V Bias
  • VOUT1,2 Voltage Range: 0.8V to 1.8V
  • VOUT3 Voltage Range: 0.8V to 5.5V
  • ±1.5% Maximum Total DC Output Error
  • Current Mode Control/Fast Transient Response
  • Frequency Synchronization
  • Output Overvoltage and Overcurrent Protection
  • Multiphase Operation with Current Sharing on VOUT1 and VOUT2
  • General Purpose Temperature Monitors
  • Soft-Start/Voltage Tracking
  • Power Good Monitors
  • 15mm × 15mm × 5.01mm BGA Package

Typical Application

LTM4633 Typical Application
LTM4633 Typical Application

Description

The LTM®4633 μModule® (power module) regulator combines three complete 10A switching mode DC/DC converters into one small package. Included in the package are the switching controllers, power FETs, inductors, and most support components. The LTM4633’s three regulators operate from 4.7V to 16V input rail(s) or 2.375V to 16V with an external 5V bias. The VOUT1 and VOUT2 output range is 0.8V to 1.8V, while the VOUT3 output range is 0.8V to 5.5V. Each output is set by one external resistor.

High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, multiphase parallel operation of VOUT1 and VOUT2, soft-start and output voltage tracking for supply rail sequencing.

Fault protection features include overvoltage protection, overcurrent protection and temperature monitoring. The power module is offered in a space saving, thermally enhanced 15mm × 15mm × 5.01mm BGA package. The LTM4633 is RoHS compliant with Pb-free finish.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTM4633EY#PBF 15mm x 15mm x 5.01mm BGA BGA E 05-08-1908 Yes
LTM4633IY#PBF 15mm x 15mm x 5.01mm BGA BGA I 05-08-1908 Yes
LTM4633MPY 15mm x 15mm x 5.01mm BGA BGA MP 05-08-1908 No
LTM4633MPY#PBF 15mm x 15mm x 5.01mm BGA BGA MP 05-08-1908 Yes


LTM4633 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTM4633EY#PBF 15mm x 15mm x 5.01mm BGA E $51.35 $35.95 Yes
LTM4633IY#PBF 15mm x 15mm x 5.01mm BGA I $56.50 $39.55 Yes
LTM4633MPY 15mm x 15mm x 5.01mm BGA MP $116.61 $81.62 No
LTM4633MPY#PBF 15mm x 15mm x 5.01mm BGA MP $100.14 $70.10 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1905A LTM4633 Demo Board | Triple Buck µModule Regulator, 4.7V ≤ VIN ≤ 16V, Vout1 & Vout2 = 0.8V to 1.8V @ 10A, Vout3 = 0.8V to 5.5V @ 10A $65.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Telecom, Networking and Industrial Equipment
  • High Density Point of Load Regulation

Product Notifications

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, 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

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LTM4633

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

To open the project file for this circuit:

  • Step 1: If you have not installed LTpowerCAD on this computer, download and install LTpowerCAD
  • Step 2: Once LTpowerCAD is installed, click on the link(s) below to open the project file
  • Step 3: If LTpowerCAD does not automatically open after clicking the link above, you can open the project file by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTpowerCAD and open the project file by selecting 'Open Project' from the 'File' menu

Design tools for the following parts are available in LTpowerCAD:
LTM4633
LTM4633 Parallel

Technical Support