LTM8045 - Inverting or SEPIC μModule (Power Module) DC/DC Converter with Up to 700mA Output Current

Features

  • SEPIC or Inverting Topology
  • Wide Input Voltage Range: 2.8V to 18V
  • Up to 700mA Output Current at VIN = 12V, VOUT = 2.5V or –2.5V
  • Up to 375mA Output Current at VIN = 12V, VOUT =15V or –15V
  • 2.5V to 15V or –2.5V to –15V Output Voltage
  • Selectable Switching Frequency: 200kHz to 2MHz
  • Programmable Soft-Start
  • User Configurable Undervoltage Lockout
  • 6.25mm × 11.25mm × 4.92mm BGA Package

Typical Application

LTM8045 Typical Application
LTM8045 Typical Application

Description

The LTM®8045 is a μModule® (power module) DC/DC converter that can be configured as a SEPIC or inverting converter by simply grounding the appropriate output rail. In a SEPIC configuration the regulated output voltage can be above, below or equal to the input voltage. The LTM8045 includes power devices, inductors, control circuitry and passive components. All that is needed to complete the design are input and output capacitors, and small resistors to set the output voltage and switching frequency. Other components may be used to control the soft-start and undervoltage lockout.

The LTM8045 is packaged in a compact (6.25mm × 11.25mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8045 is available with SnPb (BGA) or RoHS compliant terminal finish.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprint compatible with Mentor Graphics PADS® v9.5 or later, and Cadence ORCAD® v16.5 or later.

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

Part Number Package Code Temp Package
Drawing
RoHS
LTM8045EY#PBF 11.25mm x 6.25mm x 4.92mm BGA BGA E 05-08-1867 Yes
LTM8045IY 11.25mm x 6.25mm x 4.92mm BGA BGA I 05-08-1867 No
LTM8045IY#PBF 11.25mm x 6.25mm x 4.92mm BGA BGA I 05-08-1867 Yes
LTM8045MPY 11.25mm x 6.25mm x 4.92mm BGA BGA MP 05-08-1867 No
LTM8045MPY#PBF 11.25mm x 6.25mm x 4.92mm BGA BGA MP 05-08-1867 Yes


LTM8045 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
(1-99)
Price
(1k)*
RoHS
LTM8045EY#PBF 11.25mm x 6.25mm x 4.92mm BGA E $9.96 $6.97 Yes
LTM8045IY 11.25mm x 6.25mm x 4.92mm BGA I $15.53 $10.87 No
LTM8045IY#PBF 11.25mm x 6.25mm x 4.92mm BGA I $10.96 $7.67 Yes
LTM8045MPY 11.25mm x 6.25mm x 4.92mm BGA MP $24.52 $17.17 No
LTM8045MPY#PBF 11.25mm x 6.25mm x 4.92mm BGA MP $19.96 $13.97 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
DC1533A LTM8045 Demo Board | Inverting/SEPIC µModule Converter, 2.8V ≤ VIN ≤ 18V, Vout = 5V or -5V @ Up to 700mA $65.00
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Click here to view our complete list of demo boards

Applications

  • Battery Powered Regulator
  • Local Negative Voltage Regulator
  • Low Noise Amplifier Power

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Design Tools

LTspiceIV

LTspice® IV 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 IV

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 IV
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice IV 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 IV:
LTM8045

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