TPS3431-Q1 Automotive Standard Programmable Watchdog Timer With Enable | TI.com

TPS3431-Q1 (ACTIVE)

Automotive Standard Programmable Watchdog Timer With Enable

Automotive Standard Programmable Watchdog Timer With Enable - TPS3431-Q1
 

Description

The TPS3431-Q1 is a standard automotive programmable watchdog timer with an enable feature for automotive applications. The watchdog timeout features a 15% accuracy, high-precision timing (–40°C to +125°C) and 2.5% typical at 25ºC. The watchdog timeout can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled via the Enable pin or the SET logic pins to avoid undesired watchdog timeouts during the development process.

The TPS3431-Q1 is available in a small 3.00-mm ×
3.00-mm, 8-pin VSON package.










Features

  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Factory-Programmed Precision Watchdog Timers:
    • ±15% Accurate Watchdog Timeout (WDT) Over Temperature
    • ±2.5% Accurate Watchdog Timeout (WDT) Typical at 25°C
  • Watchdog Disable Feature
  • User-Programmable Watchdog Timeout
  • Input Voltage Range: VDD = 1.8 V to 6.5 V
  • Low Quiescent Current: IDD = 10 µA (typ)
  • Active-Low Open-Drain Output
  • Enable Input (EN) and Enable Output (ENOUT)
  • Available in a Small 3-mm × 3-mm, 8-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)
TPS3431-Q1 TPS3430-Q1 TPS3850-Q1 TPS3851-Q1
N/A     N/A     Adjustable
0.84
0.86
1.06
1.12
1.15
1.67
1.73
2.33
2.4
2.79
2.88
3.07
3.17
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    
1.8     1.6     1.6     1.6    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
Active-low
Open-drain    
200     Programmable     Programmable     200    
Watchdog Timer
Watchdog Disable
Watchdog Reset Delay
Enable    
Watchdog Timer
Window Watchdog
Watchdog Disable
Watchdog Reset Delay    
Over Voltage Sense
Watchdog Disable
Watchdog Timer
Window Comparator
Window Watchdog    
Active Low Enable
Manual Reset
Watchdog Disable
Watchdog Timer    
Automotive     Automotive     Automotive     Automotive    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
Programmable     Programmable     Programmable     Programmable