LTM8049 - Dual SEPIC or Inverting μModule DC/DC Converter


  • Two Complete Switch Mode Power Supplies
  • SEPIC or Inverting Topology
  • Wide Input Voltage Range: 2.6V to 20V
  • 2.5V to 24V or –2.5V to –24V Output Voltage
  • 1A at 5VOUT from 12VIN
  • Selectable Switching Frequency: 200kHz to 2.5MHz 
  • Power Good Outputs for Event Based Sequencing
  • User Configurable Undervoltage Lockout
  • (e4) RoHS Compliant Package with Gold Pad Finish
  • Low Profile 15mm × 9mm × 2.42mm Surface Mount BGA Package

Typical Application

LTM8049 Typical Application
LTM8049 Typical Application


The LTM8049 is a Dual SEPIC/Inverting μModule® (power module) DC/DC Converter. Each of the two outputs can be easily configured as a SEPIC or Inverting converter by simply grounding the appropriate output rail. The LTM8049 includes power devices, inductors, control circuitry and passive components. All that is needed to complete the design are input and output caps, and small resistors to set the output voltages and switching frequency. Other components may be used to control the soft-start and undervoltage lockout.

The LTM8049 is packaged in a thermally enhanced, compact (15mm × 9mm) over-molded Ball Grid Array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8049 is RoHS compliant.


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
LTM8049EY#PBF 15mm x 9mm x 2.42mm BGA BGA E 05-08-1964 Yes
LTM8049IY#PBF 15mm x 9mm x 2.42mm BGA BGA I 05-08-1964 Yes

LTM8049 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
LTM8049EY#PBF 15mm x 9mm x 2.42mm BGA E $20.29 $14.20 Yes
LTM8049IY#PBF 15mm x 9mm x 2.42mm BGA I $22.31 $15.62 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
DC2244A LTM8049 Demo Board | Dual SEPIC/Inverting μModule, 2.8V ≤ VIN ≤ 18V, Vout1/2 = ±12V@1A $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:

  • 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:


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

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