Texas Instruments TPS3436-Q1 Precision Window-Watchdog Timer
Texas Instruments TPS3436-Q1 Precision Window-Watchdog Timer is an ultra-low power consumption (250nA typical) device offering a programmable window watchdog timer. The TPS3436-Q1 provides a high-accuracy window watchdog timer with a host of features for various applications. The close window timer can be factory-programmed or user-programmed using an external capacitor. The open-window to close-window ratio can be changed on the fly using a combination of logic pins. The watchdog also offers unique features such as enable-disable and startup delay.
The WDO delay can be set by factory-programmed default delay settings or programmed by an external capacitor. The device also offers a latched output operation where the output is latched until the watchdog fault is cleared. The TPS3436-Q1 provides a performance upgrade alternative to the TPS3430-Q1 device family. The Texas Instruments TPS3436-Q1 is available in a small 8-pin SOT-23 package.
Features
- AEC-Q100 qualified with the following results
- Device temperature grade 1 (–40°C to 125°C ambient operating temperature range)
- Factory-programmed or user-programmable watchdog timeout
- ±10% accurate timer (maximum)
- Factory programmed close window of 1msec to 100sec
- Factory-programmed or user-programmable reset delay
- ±10% accurate timer (maximum)
- Factory programmed option of 2msec to 10sec
- Input voltage range of VDD = 1.04V to 6.0V
- Ultra-low supply current of IDD = 250nA (typical)
- Open-drain, push-pull, active-low outputs
- Various programmability options
- Watchdog enable-disable
- Watchdog startup delay of no delay to 10sec
- Open window to close window ratio option of 1X to 511X
- Latched output option
- MR functionality support
Applications
- Onboard (OBC) and wireless charger
- Driver monitoring
- Battery Management System (BMS)
- Front camera
- Surround-view system ECU
Simplified Schematic
Related Development Tools
Texas Instruments TPS36Q1EVM Evaluation Module
Allows users to evaluate the TPS3435-Q1, TPS3436-Q1, TPS35-Q1, and TPS36-Q1 voltage supervisors.