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

TPS3430 (ACTIVE)

Window Watchdog Timer With Programmable Reset Delay

Window Watchdog Timer With Programmable Reset Delay - TPS3430
 

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 Compare all products in Supervisor & reset ICs

 
Threshold Voltage 1 (Typ) (V)
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 TPS3431 TPS3850 TPS3851
N/A     N/A     Adjustable
1.11
1.15
1.67
1.72
2.79
2.88
3.06
3.16
4.65
4.8    
1.67
1.73
2.32
2.4
2.79
2.88
3.07
3.17
4.65
4.8    
1     1     1     1    
6.5     6.5     6.5     6.5    
1.6     1.8     1.6     1.6    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Programmable     200     Programmable     200    
Watchdog Timer
Window Watchdog
Watchdog Disable
Watchdog Reset Delay    
Watchdog Timer
Watchdog Disable
Watchdog Reset Delay
Enable    
Over Voltage Sense
Watchdog Disable
Watchdog Timer
Window Comparator
Window Watchdog    
Active Low Enable
Manual Reset
Watchdog Disable
Watchdog Timer    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
Programmable     Programmable     Programmable     Programmable