SLVSGF0B October   2022  – March 2025 TPS3435-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
    7. 6.7 Switching Characteristics
    8. 6.8 Timing Diagrams
    9. 6.9 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 Timeout Watchdog Timer
        1. 7.3.1.1 tWD Timer
        2. 7.3.1.2 Watchdog Enable Disable Operation
        3. 7.3.1.3 tSD Watchdog Start Up Delay
        4. 7.3.1.4 SET Pin Behavior
      2. 7.3.2 Manual RESET
      3. 7.3.3 WDO Output
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Assert Delay
        1. 8.1.1.1 Factory-Programmed Output Assert Delay Timing
        2. 8.1.1.2 Adjustable Capacitor Timing
      2. 8.1.2 Watchdog Timer Functionality
        1. 8.1.2.1 Factory-Programmed Timing Options
        2. 8.1.2.2 Adjustable Capacitor Timing
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1: Monitoring a Standard Microcontroller for Timeouts
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Setting the Watchdog Timeout Period
          2. 8.2.1.2.2 Setting Output Assert Delay
          3. 8.2.1.2.3 Setting the Startup Delay
          4. 8.2.1.2.4 Calculating the WDO Pullup Resistor
    3. 8.3 Power Supply Recommendations
    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 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.9 Typical Characteristics

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

TPS3435-Q1 Timer Accuracy vs TemperatureFigure 6-2 Timer Accuracy vs Temperature
TPS3435-Q1 tWD vs CapacitanceFigure 6-4 tWD vs Capacitance
TPS3435-Q1 WDO VOL vs I sink, VDD = 1.5VFigure 6-6 WDO VOL vs I sink, VDD = 1.5V
TPS3435-Q1 WDO VOH vs I source, VDD = 2.0VFigure 6-8 WDO VOH vs I source, VDD = 2.0V
TPS3435-Q1 Supply Current vs Power-Supply VoltageFigure 6-10 Supply Current vs Power-Supply Voltage
TPS3435-Q1 Timer Accuracy HistogramFigure 6-3 Timer Accuracy Histogram
TPS3435-Q1 tWDO vs CapacitanceFigure 6-5 tWDO vs Capacitance
TPS3435-Q1 WDO VOL vs I sink, VDD = 3.3VFigure 6-7 WDO VOL vs I sink, VDD = 3.3V
TPS3435-Q1 WDOVOH vs I source, VDD = 6.0VFigure 6-9 WDOVOH vs I source, VDD = 6.0V