SNVSCC2F November   2022  – July 2024 TPS389C03-Q1

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
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  I2C
      2. 7.3.2  Maskable Interrupt (AMSK)
      3. 7.3.3  VDD
      4. 7.3.4  MON
      5. 7.3.5  NRST
      6. 7.3.6  NIRQ
      7. 7.3.7  ADC
      8. 7.3.8  Packet Error Checking (PEC)
      9. 7.3.9  Q&A Watchdog
        1. 7.3.9.1 Question and Token Generation
        2. 7.3.9.2 Q&A Watchdog Open and Close Window Delay
        3. 7.3.9.3 Q&A Watchdog Status Register
        4. 7.3.9.4 Q&A Watchdog Timing
        5. 7.3.9.5 Q&A Watchdog State Machine and Test Program
      10. 7.3.10 Error Signal Monitoring (ESM)
        1. 7.3.10.1 ESM Timing
      11. 7.3.11 Register Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Built-In Self Test and Configuration Load
        1. 7.4.1.1 Notes on BIST Execution
      2. 7.4.2 TPS389C03-Q1 Power ON
  9. 8 Register Maps
    1. 8.1 Registers Overview
      1. 8.1.1 BANK0 Registers
      2. 8.1.2 BANK1 Registers
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Automotive Multichannel Sequencer and Monitor
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
      4. 9.2.4 Application Curves
    3. 9.3 Power Supply Recommendations
      1. 9.3.1 Power Supply Guidelines
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Nomenclature
    2. 10.2 Documentation Support
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.2.1 Automotive Multichannel Sequencer and Monitor

A typical application for the TPS389C03-Q1 is shown in Figure 9-1. TPS389C03-Q1 is used to provide the proper voltage monitoring for the target SOC device. A mulitchannel voltage monitor TPS389C03-Q1 is used to monitor the voltage rails as these rails power up and power down to ensure that the correct sequence occurs in both occasions. A safety microcontroller is also used to provide ACT, NIRQ, and I2C commands to the TPS389C03-Q1 and sequencer. The ACT signal from the safety microcontroller determines when the TPS389C03-Q1enters into ACTIVE or SHDN states while the NIRQ pin of the TPS389C03-Q1 acts as an interrupt pin that is set when a fault has occurred. The host microcontroller can clear the fault by writing 1 to the affected register. The power rails for the safety microcontroller are not shown in Figure 9-1 for simplicity.

TPS389C03-Q1 TPS389C03-Q1 Voltage Monitor Design Block DiagramFigure 9-1 TPS389C03-Q1 Voltage Monitor Design Block Diagram