TPS3431-Q1 Texas instruments

TPS3431-Q1

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TPS3431-Q1

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Описание

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 25°C. 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. The TPS3431-Q1 features wettable flanks for easy optical inspection.

AEC-Q100 qualified for automotive applications:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
Functional safety-capable
- Documentation available to aid functional safety system design
Factory-programmed precision watchdog timers:
- ±2.5% Accurate watchdog timeout (WDT) typical at 25°C
Watchdog disable feature
User-programmable watchdog timeout
Input voltage range: V_DD = 1.8 V to 6.5 V
Low quiescent current: I_DD = 10 µA (typical)
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

Features	Watchdog disable, Watchdog timer
Reset threshold accuracy (%)	0
Iq (typ) (mA)	0.01
Output driver type/reset output	Active-low, Open-drain
Time delay (ms)	200
Supply voltage (min) (V)	1.8
Supply voltage (max) (V)	6.5
TI functional safety category	Functional Safety-Capable
Rating	Automotive
Watchdog timer WDI (s)	Programmable
Operating temperature range (°C)	-40 to 125