Calculation tool
Data sheet
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TPS3431-Q1
- AEC-Q100 qualified for automotive applications:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Functional safety-capable
- 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: VDD = 1.8 V to 6.5 V
- Low quiescent current: IDD = 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
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.
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Technical documentation
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View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS3431-Q1 Automotive Standard Programmable Watchdog Timer with Enable datasheet (Rev. A) | PDF | HTML | 20 May 2021 |
| Functional safety information | TPS3431-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 18 Dec 2019 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 |
Design & development
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Evaluation board
TPS3431EVM — TPS3431 Standard Programmable Watchdog Timer With Enable Evaluation Module
The TPS3431 evaluation module (EVM) is a platform for evaluating the TP3431 device. TPS3431 is a standard programmable watchdog timer with an enable feature for a wide variety of applications. This device is used to monitor a watchdog input from a MCU and trigger a watchdog output if a (...)
User guide: PDF
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
Ordering & quality
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Support & training
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