Product
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TPS36-Q1
  • TPS36-Q1
  • TPS36-Q1
  • TPS36-Q1
  • TPS36-Q1
  • TPS36-Q1

TPS36-Q1

ACTIVE

Automotive nano-quiescent-current precision supervisor with window watchdog timer

Texas Instruments TPS36-Q1 Product Info

1 April 2026 3

Parameters

Rating

Automotive

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

1, 2.9, Adjustable & Fixed, adjustable

Features

Manual reset capable, Reset time delay, Undervoltage monitor only, Watchdog disable, Watchdog timer, Window watchdog

Reset threshold accuracy (%)

1.2

Iq (typ) (mA)

0.00025

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

0

Watchdog timer WDI (s)

Programmable

Supply voltage (min) (V)

0.7

Supply voltage (max) (V)

6

TI functional safety category

Functional Safety-Capable

Operating temperature range (°C)

-40 to 125

Package

SOT-23-THN (DDF)-8-8.12 mm² 2.9 x 2.8

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: 1msec to 100 sec
  • Factory programmed or user-programmable reset delay
    • ±10% Accurate timer (maximum)
    • Factory programmed option: 2 msec to 10 sec
  • Input voltage range: V DD = 1.04 V to 6.0 V
  • Fixed threshold voltage (V IT-): 1.05 V to 5.4 V
    • Threshold voltage available in 50 mV steps
    • 1.2% Voltage threshold accuracy (maximum)
    • Built-in hysteresis (V HYS): 5% (typical)
  • Ultra low supply current: I DD = 250 nA (typical)
  • Open-drain, push-pull; active-low outputs
  • Various programmability options:
    • Watchdog enable-disable
    • Watchdog startup delay: no delay to 10 sec
    • Open window to close window ratio option: 1X to 511X
    • Latched output option
  • MR functionality support
  • 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: 1msec to 100 sec
  • Factory programmed or user-programmable reset delay
    • ±10% Accurate timer (maximum)
    • Factory programmed option: 2 msec to 10 sec
  • Input voltage range: V DD = 1.04 V to 6.0 V
  • Fixed threshold voltage (V IT-): 1.05 V to 5.4 V
    • Threshold voltage available in 50 mV steps
    • 1.2% Voltage threshold accuracy (maximum)
    • Built-in hysteresis (V HYS): 5% (typical)
  • Ultra low supply current: I DD = 250 nA (typical)
  • Open-drain, push-pull; active-low outputs
  • Various programmability options:
    • Watchdog enable-disable
    • Watchdog startup delay: no delay to 10 sec
    • Open window to close window ratio option: 1X to 511X
    • Latched output option
  • MR functionality support

Description

The TPS36-Q1 is an ultra-low power consumption (250 nA typical) device offering 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 host of features for a wide variety of 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, start-up delay, 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 TPS36-Q1 provides a performance upgrade alternative to TPS3852-Q1 device family. The TPS36-Q1 is available in a small 8-pin SOT-23 package.

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