LTM8056 - 58VIN, 48VOUT Buck-Boost μModule (Power Module) Regulator


  • Complete Buck-Boost Switch Mode Power Supply
  • Wide Input Voltage Range: 5V to 58V
  • 12V/1.7A Output from 6VIN
  • 12V/3.4A Output from 12VIN
  • 12V/5.4A Output from 24VIN
  • Up to 96% Efficient
  • Adjustable Input and Output Average Current Limits
  • Input and Output Current Monitors
  • Parallelable for Increased Output Current
  • Wide Output Voltage Range: 1.2V to 48V
  • Selectable Switching Frequency: 100kHz to 800kHz
  • Synchronization from 200kHz to 700kHz
  • 15mm × 15mm × 4.92mm BGA Package

Typical Application

LTM8056 Typical Application
LTM8056 Typical Application


The LTM®8056 is a 58VIN, buck-boost Power Module® (power module) regulator. Included in the package are the switching controller, power switches, inductor and support components. A resistor to set the switching frequency, a resistor divider to set the output voltage, and input and output capacitors are all that are needed to complete the design. Other features such as input and output average current regulation may be implemented with just a few components. The LTM8056 operates over an input voltage range of 5V to 58V, and can regulate output voltages between 1.2V and 48V. The SYNC input and CLKOUT output allow easy synchronization.

The LTM8056 is housed in a compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8056 is available with SnPB or RoHS compliant terminal finish.

Buck-Boost Selection Table
  LTM8054 LTM8055 LTM8056
VIN (Operation) 36 36 58
VIN Abs Max 40 40 60
VOUT Abs Max 40 40 60
IOUT (Peak) 24VIN, 12VOUT 5.4 8.5 5.5
Package 15 × 11.25mm × 3.42mm BGA 15 × 15mm × 4.92mm BGA Pin and Function Compatible


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
LTM8056EY#PBF 15mm x 15mm x 4.92mm BGA BGA E 05-08-1891 Yes
LTM8056IY 15mm x 15mm x 4.92mm BGA BGA I 05-08-1891 No
LTM8056IY#PBF 15mm x 15mm x 4.92mm BGA BGA I 05-08-1891 Yes
LTM8056MPY 15mm x 15mm x 4.92mm BGA BGA MP 05-08-1891 No
LTM8056MPY#PBF 15mm x 15mm x 4.92mm BGA BGA MP 05-08-1891 Yes

LTM8056 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
LTM8056EY#PBF 15mm x 15mm x 4.92mm BGA E $31.43 $22.00 Yes
LTM8056IY 15mm x 15mm x 4.92mm BGA I $47.14 $33.00 No
LTM8056IY#PBF 15mm x 15mm x 4.92mm BGA I $34.57 $24.20 Yes
LTM8056MPY 15mm x 15mm x 4.92mm BGA MP $76.67 $53.67 No
LTM8056MPY#PBF 15mm x 15mm x 4.92mm BGA MP $66.51 $46.56 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
DC2154A LTM8056EY Demo Board | Buck-Boost μModule Regulator, 7V ≤ VIN ≤ 58V, VOUT = 24V @ 3A $65.00
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Click here to view our complete list of demo boards


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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

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

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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:

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