http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps36-q1″>View Datasheet

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: VDD = 1.04V to 6.0V
  • 1.05V to 5.4V fixed threshold voltage (VIT-)
    • Threshold voltage available in 50mV steps
    • 1.2% Voltage threshold accuracy (maximum)
    • Built-in hysteresis (VHYS) of 5% (typical)
  • 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

  • On-board (OBC) and wireless charger
  • Driver monitoring
  • Battery Management System (BMS)
  • Front camera
  • Surround view system ECU

Functional Block Diagrams

Block Diagram - Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor

Block Diagram - Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor

Block Diagram - Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor

Block Diagram - Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor

Texas Instruments TPS36-Q1 Ultra-Low Power Precision Supervisor