LTM8057 - 3.1VIN to 31VIN Isolated μModule DC/DC Converter


  • 2kV AC Isolated μModule Converter (Tested at 3kVDC)
  • UL60950 Recognized File 464570
  • Wide Input Voltage Range: 3.1V to 31V
  • Up to 440mA Output Current (VIN = 24V, VOUT1 = 2.5V) Output Adjustable from 2.5V to 12V
  • Current Mode Control
  • Programmable Soft-Start
  • User Configurable Undervoltage Lockout
  • Low Profile (9mm × 11.25mm × 4.92mm) BGA Package

Typical Application

LTM8057 Typical Application
LTM8057 Typical Application


The LTM®8057 is a 2kV AC isolated flyback μModule® (micromodule) DC/DC converter. Included in the package are the switching controller, power switches, transformer, and all support components. Operating over an input voltage range of 3.1V to 31V, the LTM8057 supports an output voltage range of 2.5V to 12V, set by a single resistor. Only output and input capacitors are needed to finish the design. Other components may be used to control the soft-start control and biasing.

The LTM8057 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 LTM8057 is available with SnPb or RoHS compliant terminal finish.


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

9mm x 11.25mm x 4.92mm BGA

LTM8057 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTM8057EY#PBF BGA 38 E $15.57 $10.90 View
LTM8057IY#PBF BGA 38 I $17.13 $11.99 View
LTM8057MPY#PBF BGA 38 MP $30.37 $21.26 View
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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
DC1987A LTM8057 Demo Board | 2kVAC Isolated Flyback µModule Converter, 4.5V ≤ VIN ≤ 29V, Vout = 5V @ Up to 350mA $65.00
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  • Industrial Sensors
  • Industrial Switches
  • Test and Measurement Equipment

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