LTM4622A - Dual Ultrathin 2A or Single 4A Step-Down DC/DC μModule Regulator


  • Complete Solution in <1cm2
  • Wide Input Voltage Range: 3.6V to 20V
  • 1.5V to 12V Output Voltage
  • Dual 2A (3A Peak) or Single 4A Output Current
  • ±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature
  • Current Mode Control, Fast Transient Response
  • External Frequency Synchronization
  • Multiphase Parallelable with Current Sharing
  • Output Voltage Tracking and Soft-Start Capability
  • Selectable Burst Mode® Operation
  • Overvoltage Input and Overtemperature Protection
  • Power Good Indicators
  • 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA Packages

Typical Application

LTM4622A Typical Application
LTM4622A Typical Application


The LTM®4622A is a complete dual 2A step-down switching mode μModule® (micromodule) regulator in a tiny ultrathin 6.25mm × 6.25mm × 1.82mm LGA and 2.42mm BGA packages. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 3.6V to 20V, the LTM4622A supports an output voltage range of 1.5V to 12V, set by a single external resistor. Its high efficiency design delivers dual 2A continuous, 3A peak, output current. Only a few ceramic input and output capacitors are needed.

The LTM4622A supports selectable Burst Mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include input overvoltage, output overcurrent and overtemperature protection.

The LTM4622A is available with SnPb (BGA) or RoHS compliant terminal finish.

  Vin Range Vout Range Iout
LTM4622 3.6V to 20V 0.6V to 5.5V Dual 2.5A or Single 5A
LTM4622A 3.6V to 20V 1.5V to 12V Dual 2A or Single 4A


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
LTM4622AEV#PBF 6.25mm x 6.25mm x 1.82mm LGA LGA E 05-08-1949 Yes
LTM4622AEY#PBF 6.25mm x 6.25mm x 2.42mm BGA BGA E 05-08-1502 Yes
LTM4622AIV#PBF 6.25mm x 6.25mm x 1.82mm LGA LGA I 05-08-1949 Yes
LTM4622AIY 6.25mm x 6.25mm x 2.42mm BGA BGA I 05-08-1502 No
LTM4622AIY#PBF 6.25mm x 6.25mm x 2.42mm BGA BGA I 05-08-1502 Yes

LTM4622A Package Drawing
LTM4622A 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
LTM4622AEV#PBF 6.25mm x 6.25mm x 1.82mm LGA E $10.22 $7.15 Yes
LTM4622AEY#PBF 6.25mm x 6.25mm x 2.42mm BGA E $10.73 $7.51 Yes
LTM4622AIV#PBF 6.25mm x 6.25mm x 1.82mm LGA I $11.23 $7.86 Yes
LTM4622AIY 6.25mm x 6.25mm x 2.42mm BGA I $15.09 $10.56 No
LTM4622AIY#PBF 6.25mm x 6.25mm x 2.42mm BGA I $11.73 $8.21 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
DC2568A LTM4622A Demo Board | Ultrathin Dual Buck μModule; 4V ≤ VIN ≤ 20V, Vout1 = 5V @ 2A, Vout2 = 3.3V @ 2A $65.00
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Click here to view our complete list of demo boards


  • General Purpose Point-of-Load Conversion
  • Telecom, Networking and Industrial Equipment
  • Medical Diagnostic Equipment
  • Test and Debug Systems

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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

Models for the following parts are available in LTspice:


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:
LTM4622 Parallel
LTM4622(Inverting) Parallel
LTM4622A Parallel
LTM4622A(Inverting) Parallel

Technical Support