Product details


Number of supplies monitored 1 Features Watchdog timer, Window watchdog, Watchdog disable Reset threshold accuracy (%) 0 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) Programmable Operating temperature range (C) -40 to 125 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other Supervisor & reset ICs


  • Factory-Programmed Precision Watchdog Timers:
    • ±15% Accurate Watchdog Timeout and Watchdog Reset Delays Over Temperature
    • ±2.5% Accurate Watchdog Timeout and Watchdog Reset Delays Typical at 25°C
  • Watchdog Disable Feature
  • User-Programmable Watchdog Timeout
  • User-Programmable Watchdog Reset Delay
  • Input Voltage Range: VDD = 1.6 V to 6.5 V
  • Low Supply Current: IDD = 10 µA (typical)
  • Open-Drain Output
  • Small 3-mm × 3-mm, 10-Pin VSON Package
  • Junction Operating Temperature Range:
    –40°C to +125°C

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The TPS3430 is a standalone window watchdog timer with programmable watchdog window and programmable watchdog reset delay for a wide variety of applications. The TPS3430 window watchdog achieves 15% timing accuracy (–40°C to +125°C), 2.5% timing accuracy (typical at 25°C) and the watchdog output (WDO) reset delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The watchdog can be disabled via the SET pins to avoid undesired watchdog timeouts during the development process or during power on.

The TPS3430 is available in a small 3.00-mm ×
3.00-mm, 10-pin VSON package.

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Similar but not functionally equivalent to the compared device:
TPS3850 ACTIVE Precision window supervisor for OV & UV monitoring with window watchdog timer & programmable delay A window detector with built-in window watchdog timer for overvoltage and undervoltage detection
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 10
Type Title Date
* Datasheet TPS3430 Window Watchdog Timer with Programmable Reset Delay datasheet Jul. 25, 2018
Application notes Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) Mar. 17, 2020
Application notes Open Load Detection and Limp Home Function in BCM Aug. 30, 2019
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical articles Voltage supervisor requirements for e-meter applications Jan. 18, 2019
Technical articles Improve circuit breaker leakage current response with a voltage supervisor Jan. 10, 2019
Application notes Latching a Watchdog Timer Aug. 26, 2018
User guides TPS3430EVM Window Watchdog Timer With Programmable Timeout Delay User's Guide Jul. 12, 2018
Technical articles Automotive electronics design made easy Jul. 18, 2013
Technical articles John discusses benefits of LEDs in automobiles Jul. 16, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPS3430 evaluation module (EVM) is a platform for evaluating the TP3430 device. TPS3430 is a standalone window watchdog timer with programmable window watchdog and programmable reset delay for a wide variety of applications. This device is used to monitor watchdog input from (...)

  • Programmable window watchdog timer
  • Programmable reset delay
  • Watchdog disable
  • Open-drain output

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SNVC223.ZIP (51 KB)

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VSON (DRC) 10 View options

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