Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor

Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor consumes 250nA (typical) and offers a precision voltage supervisor with a programmable window watchdog timer. The TPS36-Q1 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range. The TPS36-Q1 offers 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, startup delay, and independent WDO pin option.

The RESET or 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 supervisor or watchdog fault is cleared. The Texas Instruments TPS36-Q1 provides a performance upgrade alternative to the TPS3852-Q1 device family. The TPS36-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)
- 1msec to 100sec factory programmed close window
Factory-programmed or user-programmable reset delay
- ±10% Accurate timer (maximum)
- 2msec to 10sec factory programmed option
Input voltage range: V_DD = 1.04V to 6.0V
1.05V to 5.4V fixed threshold voltage (V_IT-)
- Threshold voltage available in 50mV steps
- 1.2% Voltage threshold accuracy (maximum)
- Built-in hysteresis (V_HYS) of 5% (typical)

Ultra-low supply current of I_DD = 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