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TPS3436-Q1

ACTIVE

Automotive, nano-quiescent-current precision window watchdog timer

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Data sheet

TPS3436-Q1

ACTIVE
Data sheet Order now

Product details

Features Latching, Manual reset capable, Stand-alone watchdog, Watchdog disable, Watchdog timer, Window watchdog Iq (typ) (mA) 0.00025 Output driver type/reset output Active-low, Open-drain, Push-Pull Supply voltage (min) (V) 0.7 Supply voltage (max) (V) 6 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) Programmable Operating temperature range (°C) -45 to 125
Features Latching, Manual reset capable, Stand-alone watchdog, Watchdog disable, Watchdog timer, Window watchdog Iq (typ) (mA) 0.00025 Output driver type/reset output Active-low, Open-drain, Push-Pull Supply voltage (min) (V) 0.7 Supply voltage (max) (V) 6 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) Programmable Operating temperature range (°C) -45 to 125
SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8
  • 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
  • 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
  • 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

The TPS3436-Q1 is an ultra-low power consumption (250 nA typical) device offering a programmable window watchdog timer.

The TPS3436-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.

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 TPS3430-Q1 device family. The TPS3436-Q1 is available in a small 8-pin SOT-23 package.

The TPS3436-Q1 is an ultra-low power consumption (250 nA typical) device offering a programmable window watchdog timer.

The TPS3436-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.

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 TPS3430-Q1 device family. The TPS3436-Q1 is available in a small 8-pin SOT-23 package.
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Technical documentation

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Type Title Date
* Data sheet TPS3436-Q1 Automotive Nano IQ Precision Window Watchdog Timer datasheet (Rev. A) PDF | HTML 20 Jun 2023
Functional safety information TPS3435/3436/35/36 Pinout A Functional Safety FIT Rate and Failure Mode PDF | HTML 15 Jun 2023
Functional safety information TPS3435/3436/35/36 Pinout B Functional Safety FIT Rate and Failure Mode PDF | HTML 21 Apr 2023
Functional safety information TPS3435/3436/35/36 Pinout C Functional Safety FIT Rate and Failure Mode Distrib PDF | HTML 23 Mar 2023

Design & development

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Evaluation board

TPS36Q1EVM — TPS36 evaluation module for nano-quiescent-current precision supervisor

The TPS36Q1EVM is an evaluation module (EVM) for the TPS3435-Q1, TPS3436-Q1, TPS35-Q1 and TPS36-Q1 voltage supervisors. This family of automotive-grade products has support for undervoltage-supervisor and watchdog functionality. Please refer to each product's data sheet for specific functions.

(...)

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SOT-23-THN (DDF) 8 Ultra Librarian
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