Texas Instruments TPS35/TPS35-Q1 Precision Voltage Supervisors
Texas Instruments TPS35/TPS35-Q1 Precision Voltage Supervisors are an ultra-low power consumption (250nA typical) device offering a precision voltage supervisor with a programmable timeout watchdog timer. The TPS35/TPS35-Q1 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range.
The TPS35/TPS35-Q1 offers a high-accuracy timeout watchdog timer with a host of features for various applications. The timeout watchdog timer can be factory-programmed, or user programmed using an external capacitor. The timer value 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 TPS35/TPS35-Q1 provides a performance upgrade alternative to the TPS3851 device family. The TPS35/TPS35-Q1 is available in a small 6-pin WSON and 8-pin SOT-23 package. The Texas Instruments TPS35-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Factory-programmed or user-programmable watchdog timeout
- ±10% Accurate timer (maximum)
- Factory programmed to 1msec to 100sec
- Factory-programmed or user-programmable reset delay
- ±10% Accurate timer (maximum)
- Factory programmed option to 2msec to 10sec
- Input voltage range of VDD = 1.04V to 6.0V
- Fixed threshold voltage (VIT-) of 1.05V to 5.4V
- Threshold voltage available in 50mV steps
- 1.2% Voltage threshold accuracy (maximum)
- 5% (typical) built-in hysteresis (VHYS)
- Ultra-low supply current of IDD = 250nA (typical)
- Open-drain, push-pull, active-low outputs
- Various programmability options
- Watchdog enable-disable
- Watchdog startup delay (no delay to 10sec)
- 1X to 256X on the fly timer extension
- Latched output option
- MR functionality support
Applications
- Robot servo drive
- Mixed module (AI, AO, DI, DO)
- HVAC controller
- Electricity meter
- Infusion pump
- Surgical equipment
Datasheets
Typical Application Circuit
Related Development Tool
Texas Instruments TPS36Q1EVM Evaluation Module
Allows users to evaluate the TPS3435-Q1, TPS3436-Q1, TPS35-Q1, and TPS36-Q1 voltage supervisors.