SLVSHM2B March   2025  – October 2026 TPS2HC120-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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 SNS Timing Characteristics
    7. 6.7 Switching Characteristics
    8. 6.8 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 Pin Current and Voltage Conventions
      2. 7.3.2 Low Power Mode
        1. 7.3.2.1 Entry Into LPM
        2. 7.3.2.2 During LPM
        3. 7.3.2.3 Exiting LPM
      3. 7.3.3 Accurate Current Sense
      4. 7.3.4 Adjustable Current Limit
      5. 7.3.5 Inductive-Load Switching-Off Clamp
      6. 7.3.6 Fault Detection and Reporting
        1. 7.3.6.1 Diagnostic Enable Function
        2. 7.3.6.2 Multiplexing of Current Sense
        3. 7.3.6.3 FLT Reporting
        4. 7.3.6.4 Fault Table
      7. 7.3.7 Full Diagnostics
        1. 7.3.7.1 Short-to-GND and Overload Detection
        2. 7.3.7.2 Open-Load Detection
          1. 7.3.7.2.1 Channel On
          2. 7.3.7.2.2 Channel Off
        3. 7.3.7.3 Short-to-Battery Detection
        4. 7.3.7.4 Reverse-Polarity and Battery Protection
        5. 7.3.7.5 Thermal Fault Detection
          1. 7.3.7.5.1 Thermal Protection Behavior
      8. 7.3.8 Full Protections
        1. 7.3.8.1 UVLO Protection
        2. 7.3.8.2 Loss of GND Protection
        3. 7.3.8.3 Loss of Power Supply Protection
        4. 7.3.8.4 Reverse Battery Protection
        5. 7.3.8.5 Protection for MCU I/Os
    4. 7.4 Device Functional Modes
      1. 7.4.1 Working Modes
        1. 7.4.1.1 SLEEP
        2. 7.4.1.2 DIAGNOSTIC
        3. 7.4.1.3 ACTIVE
        4. 7.4.1.4 STANDBY DELAY
        5. 7.4.1.5 LOW POWER MODE
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 EMC Transient Disturbances Test
    3. 8.3 Typical Application
      1. 8.3.1 Design Requirements
      2. 8.3.2 Detailed Design Procedure
      3. 8.3.3 Application Curves
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Examples
        1. 8.5.2.1 Without a GND Network
        2. 8.5.2.2 With a GND Network
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    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. 11Mechanical, Packaging, and Orderable Information

7.3.6.3 FLT Reporting

The FLT pin is used to monitor the fault condition among all the channels. When a fault condition (except open load and short-to-battery faults) occurs on any channel, the FLT pin is pulled down to GND. A 3.3V or 5V external pullup is required to match the supply level of the microcontroller. The FLT pin reports faults as long as the device is not in the SLEEP or LOW POWER MODE. For open load and short-to-battery faults, FLT goes low only if the selected channel has the fault.

After the FLT report, the microcontroller can check and identify the channel in fault status by multiplexed current sensing. The SNS pin also works as a fault report with an internal pullup voltage, VSNSFH if DIAG_EN is high.