Texas Instruments TPS343x/TPS343x-Q1 Window Watchdog Timers
Texas Instruments TPS343x/TPS343x-Q1 Window Watchdog Timers come with a programmable watchdog window and a programmable watchdog reset delay for a wide variety of applications. The TPS3430 window watchdog achieves 15% timing accuracy (–40°C to +125°C) and 2.5% timing accuracy (typical at 25°C). 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 TPS343x-Q1 devices are AEC-Q100 qualified for automotive applications.
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 of VDD = 1.6V to 6.5V
- Low supply current of IDD = 10µA (typical)
- Open-drain output
- Small 3mm × 3mm, 10-Pin VSON package
- Junction operating temperature range of –40°C to +125°C
Applications
- Video surveillance
- Sensor transmitters
- HVAC (Thermostats)
- Fire safety (Heat and smoke detectors)
- Medical (Personal care and fitness)
- FPGA and ASIC Applications
- Microcontroller and DSP applications
Associated Development Tools
Texas Instruments TPS343xEVM Evaluation Modules (EVMs)
Platforms for evaluating the TP3430 or TPS3431, which are window watchdog timers.
Functional Block Diagram
Published: 2018-08-15
| Updated: 2023-04-03