TIDUF34 july   2023

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1  DP83TD510E
      2. 2.3.2  AM2434
      3. 2.3.3  TPS2660
      4. 2.3.4  TPS79801-Q1
      5. 2.3.5  MSP430FR2476
      6. 2.3.6  TLV7031
      7. 2.3.7  ATL431
      8. 2.3.8  LM74700-Q1
      9. 2.3.9  TPS62825A
      10. 2.3.10 TPS61023
      11. 2.3.11 TLVM13630
      12. 2.3.12 LSF0108
  9. 3System Design Theory
    1. 3.1 Power Supply
    2. 3.2 PoDL PD and Coupling Network
    3. 3.3 Sitara Technology Module
    4. 3.4 Boot Mode
    5. 3.5 PHI and BoosterPack Headers
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Boot Switch Configuration
      2. 4.1.2 Reference Design Start-Up
    2. 4.2 Software Requirements
      1. 4.2.1 PD Firmware
      2. 4.2.2 MCU Firmware
    3. 4.3 Test Setup
    4. 4.4 Test Results
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author

2.3.7 ATL431

The ATL431 device is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. This device has a typical output impedance of 0.05 Ω. Active output circuitry provides a very sharp turn-on characteristic, making this device an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

The ATL431 has > 20 × improvement cathode current range over the TL43x predecessor and is also stable with a wider range of load capacitance types and values.

The ATL431 device is characterized for operation from –40°C to +85°C.