SLVSGE8B November   2022  – August 2024 TPS35-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 Voltage Supervisor
      2. 7.3.2 Timeout Watchdog Timer
        1. 7.3.2.1 tWD Timer
        2. 7.3.2.2 Watchdog Enable Disable Operation
        3. 7.3.2.3 tSD Watchdog Start Up Delay
        4. 7.3.2.4 SET Pin Behavior
      3. 7.3.3 Manual RESET
      4. 7.3.4 RESET and WDO Output
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 CRST Delay
        1. 8.1.1.1 Factory-Programmed watchdog Timing
        2. 8.1.1.2 Adjustable Capacitor Timing
      2. 8.1.2 Watchdog Timer Functionality
        1. 8.1.2.1 Factory-Programmed watchdog Timing
        2. 8.1.2.2 Adjustable Capacitor Timings
    2. 8.2 Typical Applications
      1. 8.2.1 Design 1: Monitoring a Microcontroller Supply Voltage and Watchdog Timer
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Setting the Voltage Threshold
          2. 8.2.1.2.2 Meeting the Watchdog Timeout Period
          3. 8.2.1.2.3 Setting the Reset Delay
          4. 8.2.1.2.4 Setting the Startup Delay and Output Topology
          5. 8.2.1.2.5 Calculating the RESET 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

Package Options

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

4 Device Comparison

Figure 4-1 shows the device naming nomenclature of the TPS35-Q1. For all possible output types, threshold voltage options, 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(2) Pinout(3) WD Timeout Startup-Delay Time Scaling Output Pulse Output Topology Vit-
TPS3435CAEBJDDFR(1) WD C 20ms 0 1, 4, 8 Latched open-drain N/A
TPS3435CAGBJDDFRQ1(1) WD C 100ms 0 1, 4, 8 Latched open-drain N/A
TPS3435CBHAJDDFR(1) WD C 200ms 200ms 1, 2, 4 Latched open-drain N/A
TPS3435CCGAJDDFR(1) WD C 100ms 500ms 1, 2, 4 Latched open-drain N/A
TPS3435CECAJDDFRQ1(1) WD C 5ms 5s 1, 2, 4 Latched open-drain N/A
TPS3435CGLEFDDFR(1) 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(1) WD J 1.4s 0 1, 2 Latched open-drain N/A
TPS3435JFMAFDSER(1) WD J 50s 10s 1, 2 100ms open-drain N/A
TPS35CA38GACDDFRQ1(1) WD + SVS C 100ms 0 1, 2, 4 10ms open-drain 2.9V
TPS35DA40GCJDDFR(1) WD + SVS D 100ms 0 1, 8, 16 Latched open-drain 3V
TPS35DA69GADDDFRQ1(1) WD + SVS D 100ms 0 1, 2, 4 25ms open-drain 4.45V
TPS35JE42IADDSER(1) 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(1) WD + SVS C 1s 0 1, 2, 4 200ms open-drain 2.9V
(1) Product preview. Please check with a Texas Instruments representative for availability.
(2) WD = Watchdog , SVS = Voltage Supervisor
(3) Please refer to Section 5 for pinout information
TPS35-Q1 Device Naming Nomenclature Figure 4-1 Device Naming Nomenclature

TPS35-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