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TPS35

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Nano-quiescent-current precision supervisor with timeout watchdog timer

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Data sheet

TPS35

ACTIVE
Data sheet Order now

Product details

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.85, 2.3, 2.75, 3, 3.1 Features Latching, Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Iq (typ) (mA) 0.000025 Output driver type/reset output Active-low, Open-drain Watchdog timer WDI (s) Programmable Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.85, 2.3, 2.75, 3, 3.1 Features Latching, Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Iq (typ) (mA) 0.000025 Output driver type/reset output Active-low, Open-drain Watchdog timer WDI (s) Programmable Operating temperature range (°C) -40 to 125
SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm) WSON (DSE) 6 2.25 mm² (1.5 mm × 1.5 mm)
  • Factory programmed or user-programmable watchdog timeout
    • ±10% Accurate timer (maximum)
    • Factory programmed: 1ms to 100s
  • Factory programmed or user-programmable reset delay
    • ±10% Accurate timer (maximum)
    • Factory programmed option: 2ms to 10s
  • Input voltage range: VDD = 1.04V to 6.0V
  • Fixed threshold voltage (VIT-): 1.05V to 5.4V
    • Threshold voltage available in 50mV steps
    • 1.2% Voltage threshold accuracy (maximum)
    • Built-in hysteresis (VHYS): 5% (typical)
  • Ultra low supply current: IDD = 250nA (typical)
  • Open-drain, push-pull; active-low outputs
  • Various programmability options:
    • Watchdog enable-disable
    • Watchdog startup delay: no delay to 10s
    • On the fly timer extension: 1X to 256X
    • Latched output option
  • MR functionality support
  • Factory programmed or user-programmable watchdog timeout
    • ±10% Accurate timer (maximum)
    • Factory programmed: 1ms to 100s
  • Factory programmed or user-programmable reset delay
    • ±10% Accurate timer (maximum)
    • Factory programmed option: 2ms to 10s
  • Input voltage range: VDD = 1.04V to 6.0V
  • Fixed threshold voltage (VIT-): 1.05V to 5.4V
    • Threshold voltage available in 50mV steps
    • 1.2% Voltage threshold accuracy (maximum)
    • Built-in hysteresis (VHYS): 5% (typical)
  • Ultra low supply current: IDD = 250nA (typical)
  • Open-drain, push-pull; active-low outputs
  • Various programmability options:
    • Watchdog enable-disable
    • Watchdog startup delay: no delay to 10s
    • On the fly timer extension: 1X to 256X
    • Latched output option
  • MR functionality support

The TPS35 is an ultra-low power consumption (250nA typical) device offering a precision voltage supervisor with a programmable timeout watchdog timer. The TPS35 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range.

The TPS35 offers a high accuracy timeout watchdog timer with a host of features for a wide variety of 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, 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 TPS35 provides a performance upgrade alternative to TPS3851 device family. The TPS35 is available in a small 6-pin WSON and 8-pin SOT-23 package.

The TPS35 is an ultra-low power consumption (250nA typical) device offering a precision voltage supervisor with a programmable timeout watchdog timer. The TPS35 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range.

The TPS35 offers a high accuracy timeout watchdog timer with a host of features for a wide variety of 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, 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 TPS35 provides a performance upgrade alternative to TPS3851 device family. The TPS35 is available in a small 6-pin WSON and 8-pin SOT-23 package.
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Technical documentation

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* Data sheet TPS35 Nano IQ Precision Voltage Supervisor with Precision Timeout Watchdog Timer datasheet (Rev. B) PDF | HTML Mar 21, 2025
Functional safety information TPS35 TPS36 Pinout D Functional Safety FIT Rate and Failure Mode Distrib PDF | HTML Feb 20, 2025
Functional safety information TPS3435/3436/35/36 Pinout A Functional Safety FIT Rate and Failure Mode PDF | HTML Jun 15, 2023
Functional safety information TPS3435/3436/35/36 Pinout B Functional Safety FIT Rate and Failure Mode PDF | HTML Apr 21, 2023
Functional safety information TPS3435/3436/35/36 Pinout C Functional Safety FIT Rate and Failure Mode Distrib PDF | HTML Mar 23, 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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SOT-23-THN (DDF) 8 Ultra Librarian
WSON (DSE) 6 Ultra Librarian
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