SLUUCS3 February   2023 LM2105

 

  1.   Abstract
  2.   Trademarks
  3. 1 Introduction
  4. 2 Description
    1. 2.1 Features
    2. 2.2 I/O Description
  5. 3 Electrical Specifications
  6. 4 Test Summary
    1. 4.1 Definitions
    2. 4.2 Equipment
      1. 4.2.1 Power Supply
      2. 4.2.2 Function Generator
      3. 4.2.3 DMM
      4. 4.2.4 Oscilloscope
    3. 4.3 Equipment Setup
      1. 4.3.1 DC Power Supply Settings
      2. 4.3.2 Digital Multimeter Settings
      3. 4.3.3 Two-Channel Function Generator Settings
      4. 4.3.4 Oscilloscope Settings
      5. 4.3.5 Bench Setup Diagram
  7. 5 Power-Up and Power-Down Procedure
    1. 5.1 Power Up
    2. 5.2 Power Down
  8. 6 Operation With External Bootstrap Diode
  9. 7 Typical Performance Waveforms (CL = 1000 pF)
    1. 7.1 Propagation Delays
  10. 8 Schematic
  11. 9 Layout Diagrams
  12. 10Bill of Materials

6 Operation With External Bootstrap Diode

The LM2105 has an internal bootstrap diode included, the series resistor (R10) is not populated. This allows the user to evaluate pin compatible drivers that do not have the internal bootstrap diode which is included with the LM2105 high-side and low-side driver.

As a general guideline, when using the external bootstrap diode a resistance value of 2.2 Ω to 10 Ω is recommended. Install the R10 1206-size resistor for evaluation of pin compatible drivers without the internal bootstrap diode.