LTM4601AHV - 12A, 28VIN DC/DC µModule (Power Module) Regualtor with PLL, Output Tracking and Margining


  • Complete Switch Mode Power Supply
  • Wide Input Voltage Range: 4.5V to 28V
  • 12A DC Typical, 14A Peak Output Current
  • 0.6V to 5V Output Voltage
  • Output Voltage Tracking and Margining
  • Redundant Mounting Pads for Enhanced Solder-Joint Strength
  • Parallel Multiple μModule® Regulators for Current Sharing
  • Differential Remote Sensing for Precision Regulation
  • PLL Frequency Synchronization
  • ±1.5% Total DC Error
  • Current Foldback Protection (Disabled at Start-Up)
  • SnPb or RoHS Compliant Finish
  • –55°C to 125°C Operating Temperature Range (LTM4601AHVMPV)
  • Ultrafast™ Transient Response
  • Up to 95% Efficiency at 5VIN, 3.3VOUT
  • Programmable Soft-Start
  • Output Overvoltage Protection
  • Enhanced (15mm × 15mm × 2.82mm) Surface Mount 
    LGA and (15mm × 15mm × 3.42mm) BGA Packages

Typical Application

LTM4601AHV Typical Application
LTM4601AHV Typical Application


The LTM®4601AHV is a complete 12A step-down switch mode DC/DC power supply with onboard switching controller, MOSFETs, inductor and all support components. The μModule regulator is housed in a small surface mount 15mm × 15mm × 2.82mm LGA or 15mm × 15mm × 3.42mm BGA package. The LTM4601AHV LGA and BGA packages are designed with redundant mounting pads to enhance solder-joint strength for extended temperature cycling endurance. Operating over an input voltage range of 4.5V to 28V, the LTM4601AHV supports an output voltage range of 0.6V to 5V as well as output voltage tracking and margining. The high efficiency design delivers 12A continuous current (14A peak). Only bulk input and output capacitors are needed to complete the design.

The low profile and light weight package easily mounts in unused space on the back side of PC boards for high density point of load regulation. The μModule regulator can be synchronized with an external clock for reducing undesirable frequency harmonics and allows PolyPhase® operation for high load currents.

An onboard differential remote sense amplifier can be used to accurately regulate an output voltage independent of load current. The LTM4601AHV is available with SnPb or RoHS compliant terminal finish.

Vin Max 20V 20V 28V 28V
On Board Remote Sense

LTM4601 Yes

LTM4601-1 No

LTM4601A Yes

LTM4601A-1 No



Back Side Pads 118 135 (for stronger solder joint stability) 118 135 (for stronger solder joint stability)


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
LTM4601AHVEV#PBF 15mm × 15mm × 2.82mm LGA LGA E 05-08-1755 Yes
LTM4601AHVEY#PBF 15mm x 15mm x 3.42mm BGA BGA E 05-08-1877 Yes
LTM4601AHVIV#PBF 15mm × 15mm × 2.82mm LGA LGA I 05-08-1755 Yes
LTM4601AHVIY#PBF 15mm x 15mm x 3.42mm BGA BGA I 05-08-1877 Yes
LTM4601AHVMPV#PBF 15mm × 15mm × 2.82mm LGA LGA MP 05-08-1755 Yes
LTM4601AHVMPY 15mm x 15mm x 3.42mm BGA BGA MP 05-08-1877 No
LTM4601AHVMPY#PBF 15mm x 15mm x 3.42mm BGA BGA MP 05-08-1877 Yes

LTM4601AHV Package Drawing
LTM4601AHV 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
LTM4601AHVEV#PBF 15mm × 15mm × 2.82mm LGA E $29.14 $20.40 Yes
LTM4601AHVEY#PBF 15mm x 15mm x 3.42mm BGA E $30.80 $21.56 Yes
LTM4601AHVIV#PBF 15mm × 15mm × 2.82mm LGA I $32.06 $22.44 Yes
LTM4601AHVIY#PBF 15mm x 15mm x 3.42mm BGA I $33.87 $23.71 Yes
LTM4601AHVMPV#PBF 15mm × 15mm × 2.82mm LGA MP $57.50 $40.25 Yes
LTM4601AHVMPY 15mm x 15mm x 3.42mm BGA MP $74.34 $52.05 No
LTM4601AHVMPY#PBF 15mm x 15mm x 3.42mm BGA MP $59.16 $41.41 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
DC1414B-B LTM4601AHVEV DEMO BOARD | 28V, 12A DC/DC uModule Regulator with remote sense $65.00
Buy Now
Click here to view our complete list of demo boards


  • Telecom, Industrial and Networking Equipment
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Design Tools


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

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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:

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