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  • TPS3435 Nano IQ Precision Timeout Watchdog Timer

    • SNVSCF7A December   2022  – August 2024 TPS3435

      PRODUCTION DATA  

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  • TPS3435 Nano IQ Precision Timeout Watchdog Timer
  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  Thermal Information
    6. 6.6  Electrical Characteristics
    7. 6.7  Timing Requirements
    8. 6.8  Switching Characteristics
    9. 6.9  Timing Diagrams
    10. 6.10 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. 8.2.1.3 Application Curves
    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
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DSE|6
    • MPDS287A
  • DDF|8
    • MPDS569D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • snvscf7a_oa
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  • Full reading width
    • Full reading width
    • Comfortable reading width
    • Expanded reading width
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  • Card with all content

 

Data Sheet

TPS3435 Nano IQ Precision Timeout Watchdog Timer

1 Features

  • Factory programmed or user-programmable watchdog timeout
    • ±10% Accurate timer (maximum)
    • Factory programmed: 1ms to 100s
  • Factory programmed or user-programmable reset delay
    • ±10% Accurate timer (maximum)
    • Factory programmed option: 2ms to 10s
  • Input voltage range: VDD = 1.04V to 6.0V
  • Ultra low supply current: IDD = 250nA (typical)
  • Open-drain, push-pull; active-low outputs
  • Various programmability options:
    • Watchdog enable-disable
    • Watchdog startup delay: no delay to 10s
    • On the fly timer extension: 1X to 256X
    • Latched output option
  • MR functionality support

2 Applications

  • Robot servo drive
  • Mixed module (AI, AO, DI, DO)
  • HVAC controller
  • Electricity meter
  • Infusion pump
  • Surgical equipment

 
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