SLVUDN2 March   2026 LM34938-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware Connector, Test Point, and Selection Switch Descriptions
    1. 2.1 Connector Descriptions
    2. 2.2 Jumper Descriptions
    3. 2.3 Test Point Descriptions
  9. 3Implementation Results
    1. 3.1 Test Setup
    2. 3.2 Test Procedure
    3. 3.3 Precautions
    4. 3.4 Test Data and Performance Curves
      1. 3.4.1 Thermal Performance
      2. 3.4.2 Efficiency
      3. 3.4.3 Steady State Waveforms
      4. 3.4.4 Step Load Response
      5. 3.4.5 AC Loop Response Curves
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1.     Trademarks

3.4.1 Thermal Performance

LM34938Q1EVM-HD Thermal Image: VIN = 20.0V, VOUT = 5.0V, IOUT = 3.0A, No Forced Air CoolingFigure 3-2 Thermal Image: VIN = 20.0V, VOUT = 5.0V, IOUT = 3.0A, No Forced Air Cooling
LM34938Q1EVM-HD Thermal Image: VIN = 20.0V, VOUT = 28.0V, IOUT = 3.0A, No Forced Air CoolingFigure 3-4 Thermal Image: VIN = 20.0V, VOUT = 28.0V, IOUT = 3.0A, No Forced Air Cooling
LM34938Q1EVM-HD Thermal Image: VIN = 9.0V, VOUT = 28.0V, IOUT = 1.8A, No Forced Air CoolingFigure 3-6 Thermal Image: VIN = 9.0V, VOUT = 28.0V, IOUT = 1.8A, No Forced Air Cooling
LM34938Q1EVM-HD Thermal Image: VIN = 20.0V, VOUT = 28.0V, IOUT = 1.8A, No Forced Air CoolingFigure 3-3 Thermal Image: VIN = 20.0V, VOUT = 28.0V, IOUT = 1.8A, No Forced Air Cooling
LM34938Q1EVM-HD Thermal Image: VIN = 38.0V, VOUT = 28.0V, IOUT = 3.0A, No Forced Air CoolingFigure 3-5 Thermal Image: VIN = 38.0V, VOUT = 28.0V, IOUT = 3.0A, No Forced Air Cooling