SNVSC27B October   2022  – January 2025 TPS38700

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Device State Diagram
      2. 7.3.2 Built-In Self Test and Configuration Load
      3. 7.3.3 CLK32K
      4. 7.3.4 BACKUP State
      5. 7.3.5 FAILSAFE State
      6. 7.3.6 Transitioning Sequences
        1. 7.3.6.1 Sequence 1: Power Up
        2. 7.3.6.2 Sequence 2: Emergency Power Down
        3. 7.3.6.3 Sequence 3: Sleep Entry
        4. 7.3.6.4 Sequence 4: Sleep Exit
        5. 7.3.6.5 Sequence 5 & 6: Power Down from Active and Sleep States
        6. 7.3.6.6 Sequence 7: Sleep Exit Due to NRST_IN
        7. 7.3.6.7 Sequence 8: RESET Due to NRST_IN
        8. 7.3.6.8 Sequence 9: Failsafe Power Down
        9. 7.3.6.9 Output Sequencing
      7. 7.3.7 I2C
        1. 7.3.7.1 Packet Error Checking (PEC)
    4. 7.4 Register Map Table
      1. 7.4.1 Register Descriptions
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Automotive Multichannel Sequencer and Monitor
      2. 8.2.2 Design Requirements
      3. 8.2.3 Detailed Design Procedure
      4. 8.2.4 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power Supply Guidelines
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Nomenclature
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12.   Mechanical, Packaging, and Orderable Information

7.3.6.2 Sequence 2: Emergency Power Down

In case of emergency power down (VDD drops below UVLO), a best effort approach is taken to assert NRST before pulling ENx, CLK32K, and NIRQ down.

TPS38700 Emergency Power Down Figure 7-7 Emergency Power Down