LTM8068 - 2.8VIN to 40VIN Isolated μModule DC/DC Converter with LDO Post Regulator

Features

  • 2kVAC Isolated μModule Converter
  • UL60950 Recognized File E464570
  • Wide Input Voltage Range: 2.8V to 40V
  • VOUT1 Output:
    Up to 450mA (VIN = 24V, VOUT1 = 5V)
    2.5V to 18V Output Range
  • VOUT2 Low Noise Linear Post Regulator:
    Up to 300mA
    1.2V to 18V Output Range
  • Current Mode Control
  • Programmable Soft-Start
  • User Configurable Undervoltage Lockout
  • Low Profile (9mm × 11.25mm × 4.92mm) BGA Package

Typical Application

LTM8068 Typical Application
LTM8068 Typical Application

Description

The LTM®8068 is a 2kV AC isolated flyback μModule® (power module) DC/DC converter with LDO post regulator. Included in the package are the switching controller, power switches, transformer, LDO, and all support components. Operating over an input voltage range of 2.8V to 40V, the LTM8068 supports an output voltage range of 2.5V to 18V, set by a single resistor. There is also a linear post regulator whose output voltage is adjustable from 1.2V to 18V as set by a single resistor. Only output and input capacitors are needed to finish the design.

The LTM8068 is packaged in a thermally enhanced, compact (9mm × 11.25mm × 4.92mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8068 is available with SnPb or RoHS compliant terminal finish.

Packaging

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
Drawing
RoHS
LTM8068EY#PBF 11.25mm x 9mm x 4.92mm BGA BGA E 05-08-1925 Yes
LTM8068IY 11.25mm x 9mm x 4.92mm BGA BGA I 05-08-1925 No
LTM8068IY#PBF 11.25mm x 9mm x 4.92mm BGA BGA I 05-08-1925 Yes


LTM8068 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
LTM8068EY#PBF 11.25mm x 9mm x 4.92mm BGA E $16.36 $11.45 Yes
LTM8068IY 11.25mm x 9mm x 4.92mm BGA I $22.34 $15.64 No
LTM8068IY#PBF 11.25mm x 9mm x 4.92mm BGA I $18.00 $12.60 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
DC2358A LTM8068 Demo Board | 2kV AC Isolated μModule Flyback with LDO, 4.5V ≤ VIN ≤ 40V, Vout1 = 5.6V @ up to 460mA, Vout2 = 5V Post-Reg LDO Contact Factory
Buy Now
Click here to view our complete list of demo boards

Applications

  • Industrial Sensors
  • Industrial Switches
  • Ground Loop Mitigation

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Design Tools

LTspice

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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Models for the following parts are available in LTspice:
LTM8068

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