LTM4648 - Low VIN, 10A Step-Down μModule (Power Module) Regulator


  • 10A DC Output Current
  • Input Voltage Range: 2.375V to 5.5V
  • Output Voltage Range: 0.6V to 5V
  • No Heat Sink or Current Derating Up to 85°C Ambient Temperature
  • ±1.5% Maximum Total DC Output Error
  • Multiphase Operation with Current Sharing
  • Remote Sense Amplifier
  • Built-In Temperature Monitor
  • Selectable Pulse-Skipping Mode/Burst Mode® Operation for High Efficiency at Light Load
  • Soft-Start/Voltage Tracking
  • Protection: Output Overvoltage and Overcurrent Foldback
  • See LTM4649 for Up to 16VIN Operation
  • 9mm × 15mm × 4.92mm BGA Package

Typical Application

LTM4648 Typical Application
LTM4648 Typical Application
LTM4648 Typical Application


The LTM®4648 is a 10A low VIN step-down DC/DC μModule® (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all support components. Operating over an input voltage range of 2.375V to 5.5V, the LTM4648 supports an output voltage range of 0.6V to 5V, set by a single external resistor. This high efficiency design delivers up to 10A continuous current. Only bulk input and output capacitors are needed.

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, programmable multiphase operation and output voltage tracking for supply rail sequencing.

Fault protection features include overvoltage protection, overcurrent protection and thermal shutdown. The LTM4648 is offered in a small 9mm × 15mm × 4.92mm BGA package. The LTM4648 is RoHS compliant. For up to 16VIN operation, see the LTM4649.


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

Part Number Package Code Temp Package
LTM4648EY#PBF 15mm x 9mm x 4.92mm BGA BGA E 05-08-1892 Yes
LTM4648IY 15mm x 9mm x 4.92mm BGA BGA I 05-08-1892 No
LTM4648IY#PBF 15mm x 9mm x 4.92mm BGA BGA I 05-08-1892 Yes

LTM4648 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
LTM4648EY#PBF 15mm x 9mm x 4.92mm BGA E $18.93 $13.25 Yes
LTM4648IY 15mm x 9mm x 4.92mm BGA I $28.50 $19.95 No
LTM4648IY#PBF 15mm x 9mm x 4.92mm BGA I $20.83 $14.58 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
DC1856A-A LTM4648EY Demo Board | 3.3V 10A Step-Down µModule Regulator $65.00
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Click here to view our complete list of demo boards


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

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Design Tools


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

Design tools for the following parts are available in LTpowerCAD:
LTM4648 Parallel

Technical Support