Standard programmable watchdog timer with enable
Product details
Parameters
Package | Pins | Size
Features
- 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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Description
The TPS3431 is a standard programmable watchdog timer with an enable feature for a wide variety of 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 is available in a small 3.00-mm ×
3.00-mm, 8-pin VSON package.
Exact equivalent in functionality and parametrics to the compared device:
Same functionality and pinout but is not an equivalent to the compared device:
Similar but not functionally equivalent to the compared device:
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | TPS3431 Standard Programmable Watchdog Timer with Enable datasheet | Jul. 24, 2018 |
| Application note | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | Mar. 17, 2020 | |
| Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | Feb. 28, 2020 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 | |
| User guide | TPS3431EVM Standard Watchdog Timer With Enable User's Guide | Jul. 12, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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 (...)
Features
- Standard watchdog
- Watchdog disable
- Programmable watchdog timeout
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-010041 BOM.pdf (48KB) -
download TIDA-010041 CAD Files (Rev. A).zip (1948KB) -
download TIDA-010041 Gerber (Rev. A).zip (383KB) -
download TIDA-010041 Assembly Drawing (Rev. A).pdf (344KB) -
download TIDA-010041 PCB (Rev. A).pdf (2158KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SON (DRB) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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