SLUUCR5A december   2022  – june 2023 LM74900-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  5. 2Description
  6. 3Schematic
  7. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment and Setup
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
  8. 5Test Setup and Procedures
    1. 5.1 Power-Up and Power-Down With EN Control
    2. 5.2 Input Overvoltage Test
    3. 5.3 Overcurrent Protection Test
    4. 5.4 Output Hot-Short Test
  9. 6EVAL Board Assembly Drawings
    1. 6.1 PCB Drawings
  10. 7Bill of Materials (BOM)
  11. 8Revision History

2 Description

The LM74900Q1EVM is configured by default for evaluating 12-V automotive reverse battery protection with switched output to disconnect power path or clamp the output. The EVM can be used to evaluate both LM74900-Q1 and LM74910-Q1 devices.

By default the LM74900Q1EVM has LM74910-Q1 (U1) device populated for evaluation. For evaluation of LM74900-Q1, the user needs to replace U1 with LM74900-Q1.

Table 2-1 LM74900Q1EVM Evaluation Board Options and Setting
Part Number EVM Function Vin Range Vin UVLO Vin OVP

ENABLE

(EN)

 Overcurrent

Protection

 Features
Low Setting Hi Setting
LM74900Q1EVM Ideal diode with circuit breaker, under and overvoltage protection with fault output 3 V to 65 V 5.8 V 36.96 V Active high 5 A 10 A Adjustable overcurrent protection and circuit breaker timer setting, configurable SLEEP mode