SLVSGF0A october   2022  – june 2023 TPS3435-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 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 Switching Characteristics
    8. 7.8 Timing Diagrams
    9. 7.9 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 Timeout Watchdog Timer
        1. 8.3.1.1 tWD Timer
        2. 8.3.1.2 Watchdog Enable Disable Operation
        3. 8.3.1.3 tSD Watchdog Start Up Delay
        4. 8.3.1.4 SET Pin Behavior
      2. 8.3.2 Manual RESET
      3. 8.3.3 WDO Output
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Output Assert Delay
        1. 9.1.1.1 Factory-Programmed Output Assert Delay Timing
        2. 9.1.1.2 Adjustable Capacitor Timing
      2. 9.1.2 Watchdog Timer Functionality
        1. 9.1.2.1 Factory-Programmed Timing Options
        2. 9.1.2.2 Adjustable Capacitor Timing
    2. 9.2 Typical Applications
      1. 9.2.1 Design 1: Monitoring a Standard Microcontroller for Timeouts
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Setting the Watchdog Timeout Period
          2. 9.2.1.2.2 Setting Output Assert Delay
          3. 9.2.1.2.3 Setting the Startup Delay
          4. 9.2.1.2.4 Calculating the WDO Pullup Resistor
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

7.9 Typical Characteristics

all curves are taken at TA = 25°C (unless otherwise noted)

GUID-20221206-SS0I-KNCD-02LC-PSVKJCZPDGDR-low.svgFigure 7-2 Timer Accuracy vs Temperature
GUID-20221206-SS0I-0GSK-PB3G-XTNFCVGRZTW0-low.svgFigure 7-4 tWD vs Capacitance
GUID-20221206-SS0I-WQ5T-QDS5-BPHF6TL14XQ9-low.svgFigure 7-6 WDO VOL vs I sink, VDD = 1.5 V
GUID-20221206-SS0I-CVPT-8DZ2-M0D4V8TMXCH1-low.svgFigure 7-8 WDO VOH vs I source, VDD = 2.0 V
GUID-20221209-SS0I-9QBT-474B-54LKRQPBVD0K-low.svgFigure 7-10 Supply Current vs Power-Supply Voltage
GUID-20221206-SS0I-22G1-RGQ8-5ZKWPGJRZVVK-low.svgFigure 7-3 Timer Accuracy Histogram
GUID-20221206-SS0I-ZNHP-66LK-TDQ7KK1WGJDR-low.svgFigure 7-5 tWDO vs Capacitance
GUID-20221206-SS0I-Z5WR-WHTP-M8PLTQHJNHZQ-low.svgFigure 7-7 WDO VOL vs I sink, VDD = 3.3 V
GUID-20221206-SS0I-SFZF-QFBR-M8FTBCH1CLTF-low.svgFigure 7-9 WDOVOH vs I source, VDD = 6.0 V