TPS3430 Window Watchdog Timer With Programmable Reset Delay | TI.com

TPS3430 (ACTIVE)

Window Watchdog Timer With Programmable Reset Delay

 

Description

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.





Features

  • 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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Parametrics

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Part number Order Number of supplies monitored VCC (Max) (V) VCC (Min) (V) Output driver type/reset output Time delay (ms) Features Rating Operating temperature range (C) Watchdog timer WDI (sec)
TPS3430 Order now 1     6.5     1.6     Active-low
Open-drain    
Programmable     Watchdog timer
Window watchdog
Watchdog disable
Functional safety    
Catalog     -40 to 125     Programmable