SNVSBS9C March   2021  – May 2024 TPS3704-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Nomenclature
  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 Timing Diagrams
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 VDD
      2. 7.3.2 SENSEx Input
        1. 7.3.2.1 Immunity to SENSEx Pins Voltage Transients
          1. 7.3.2.1.1 SENSEx Hysteresis
      3. 7.3.3 RESETx/RESETx
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation (VDD > VDD(MIN))
      2. 7.4.2 Undervoltage Lockout (VPOR < VDD < UVLO)
      3. 7.4.3 Power-On Reset (VDD < VPOR)
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Voltage Threshold Accuracy
      2. 8.1.2 Adjustable Voltage Thresholds
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1: Multi-Rail Window Monitoring for Microcontroller Power Rails
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 Design 2: Manual Self-Test Option for Enhanced Functional Safety Use Cases
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
      3. 8.2.3 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. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.2 Design 2: Manual Self-Test Option for Enhanced Functional Safety Use Cases

Figure 8-4 displays a self-test scheme where a manual self-test function can be implemented. Any SENSEx pin can be reserved and used to trigger a fault to be observed at the output, thus pre-checking the TPS3704-Q1 for fault detection. Because the TPS3704-Q1 is functional safety compliant, it helps elevate applications like the automotive ADAS camera achieve ISO 26262 requirements and automotive safety integrity levels. This example uses a TPS37044F-Q1, configured for separate undervoltage and overvoltage (UV/OV) outputs where the SENSE4 thresholds are set at 5.5V for OV and 2V for UV.

TPS3704-Q1 TPS37044F-Q1 Quad-Channel Monitoring With Manual Self-Test Option for Functional Safety Figure 8-4 TPS37044F-Q1 Quad-Channel Monitoring With Manual Self-Test Option for Functional Safety