SNVSBT6C July   2021  – December 2022 TPS38700-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Device State Diagram
      2. 8.3.2 Built-In Self Test and Configuration Load
      3. 8.3.3 CLK32K
      4. 8.3.4 BACKUP State
      5. 8.3.5 FAILSAFE State
      6. 8.3.6 Transitioning Sequences
        1. 8.3.6.1 Sequence 1: Power Up
        2. 8.3.6.2 Sequence 2: Emergency Power Down
        3. 8.3.6.3 Sequence 3: Sleep Entry
        4. 8.3.6.4 Sequence 4: Sleep Exit
        5. 8.3.6.5 Sequence 5 & 6: Power Down from Active and Sleep States
        6. 8.3.6.6 Sequence 7: Sleep Exit Due to NRST_IN
        7. 8.3.6.7 Sequence 8: RESET Due to NRST_IN
        8. 8.3.6.8 Sequence 9: Failsafe Power Down
        9. 8.3.6.9 Output Sequencing
      7. 8.3.7 I2C
    4. 8.4 Register Map Table
      1. 8.4.1 Register Descriptions
  9. 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
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Guidelines
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Nomenclature
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
      1.      Mechanical, Packaging, and Orderable Information

Package Options

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

8.1 Overview

TPS38700-Q1 is a versatile part that can be configured for multiple configurations. The part can be ordered as a pure sequencer, pure GPIO expander, or combination sequencer & GPIO outputs. The outputs can be factory configured as push-pull or open-drain. Sequencing outputs can be assigned to ACT pin and/or SLEEP pin. These sequencing outputs can be factory configured for default values and subsequently changed via I2C on power-up before sending ACT pin high. The device also features a Built in Self-Test (BIST) function which runs automatically on power up.

TPS38700-Q1 features a precise Real Time Clock (RTC) CLK32K output with the aide of an external crystal (XTAL). It also has an RTC alarm feature and a window watchdog, all of which can be configured via I2C. The TPS38700-Q1 is capable of various I2C logic levels. A full featured Graphical User Interface (GUI) is available for download in the product folder. Contact a Texas Instruments representative for custom configured part queries.

TPS38700-Q1 can be configured to have up to twelve channels and has an emergency power down (NEM_PD) function that is activated once VDD falls below the UVLO threshold of the device. Once in the emergency power down sequence, the TPS38700-Q1 will either turn off or enter into Backup state. If a voltage on VBBAT is present and greater than 1.85 V, then the TPS38700-Q1 will enter into Backup state and the power supply for the device will switch to VBBAT.

The TPS38700-Q1 is AEC-Q100 qualified for automotive applications and has been characterized from
-40ºC to +125ºC.