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

4 Device Comparison

Figure 4-1 shows the device naming nomenclature of the TPS3435-Q1. For all possible output types, watchdog time options and output assert delay options, see Section 7 or Table 4-1 for more details. Contact TI sales representatives or on TI's E2E forum for detail and availability of other options.

Table 4-1 Available devices
Device Function(1) Pinout(2) WD Timeout Startup-Delay Time Scaling Output Pulse Output Topology Vit-
TPS3435CAEBJDDFR WD C 20ms 0 1, 4, 8 Latched open-drain N/A
TPS3435CAGBJDDFRQ1 WD C 100ms 0 1, 4, 8 Latched open-drain N/A
TPS3435CBHAJDDFR WD C 200ms 200ms 1, 2, 4 Latched open-drain N/A
TPS3435CCGAJDDFR WD C 100ms 500ms 1, 2, 4 Latched open-drain N/A
TPS3435CECAJDDFRQ1 WD C 5ms 5s 1, 2, 4 Latched open-drain N/A
TPS3435CGLEFDDFR WD C 10s 0 1, 32, 64 100ms push-pull N/A
TPS3435CAKAGDDFR WD C 1.6s 0 1, 2, 4 200ms open-drain N/A
TPS3435AFACADDFRQ1 WD A Adjustable 10s 1, 8 Adjustable open-drain N/A
TPS3435CAKAGDDFRQ1 WD C 1.6s 0 1, 2, 4 200ms open-drain N/A
TPS3435CAIEGDDFR WD C 1s 0 1, 32, 64 200ms open-drain N/A
TPS3435JAJAJDSER WD J 1.4s 0 1, 2 Latched open-drain N/A
TPS3435JFMAFDSER WD J 50s 10s 1, 2 100ms open-drain N/A
TPS35CA38GACDDFRQ1 WD + SVS C 100ms 0 1, 2, 4 10ms open-drain 2.9V
TPS35DA40GCJDDFR WD + SVS D 100ms 0 1, 8, 16 Latched open-drain 3V
TPS35DA69GADDDFRQ1 WD + SVS D 100ms 0 1, 2, 4 25ms open-drain 4.45V
TPS35JE42IADDSER WD + SVS J 1s 20ms 1, 2 25ms open-drain 3.1V
TPS35AA17AGADDFR WD + SVS A Adjustable 0 1, 128 Adjustable open-drain 1.85V
TPS35JE35JADDSER WD + SVS J 1.4s 5s 1, 2 25ms open-drain 2.75V
TPS35AA38AGADDFRQ1 WD + SVS A Adjustable 0 1, 128 Adjustable open-drain 2.9V
TPS35CA43DACDDFRQ1 WD + SVS C 10ms 0 1, 2, 4 10ms open-drain 3.15V
TPS35CA38IAGDDFRQ1 WD + SVS C 1s 0 1, 2, 4 200ms open-drain 2.9V
(1) WD = Watchdog , SVS = Voltage Supervisor
(2) Please refer to Section 5 for pinout information
TPS3435-Q1 Device Naming Nomenclature Figure 4-1 Device Naming Nomenclature

TPS3435-Q1 belongs to family of pin compatible devices offering different feature sets as highlighted in Table 4-2.

Table 4-2 Pin Compatible Device Families
DEVICE VOLTAGE SUPERVISOR TYPE OF WATCHDOG
TPS35-Q1 Yes Timeout
TPS36-Q1 Yes Window
TPS3435-Q1 No Timeout
TPS3436-Q1 No Window