Product details


Number of supplies monitored 1 Features Watchdog timer, Window watchdog, Watchdog disable Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable VCC (Max) (V) 6.5 Rating Catalog VCC (Min) (V) 1.6 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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Technical documentation

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Type Title Date
* Datasheet TPS3430 Window Watchdog Timer with Programmable Reset Delay datasheet Jul. 25, 2018
Application notes Open Load Detection and Limp Home Function in BCM Aug. 30, 2019
More literature 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 Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) Oct. 09, 2018
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 A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014

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

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

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