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TPS35-Q1

ACTIVE

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

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Data sheet

TPS35-Q1

ACTIVE
Data sheet Order now

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.9, 2.95, 3.15 Features Latching, Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Iq (typ) (mA) 0.00025 Output driver type/reset output Active-low, Open-drain 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) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.9, 2.95, 3.15 Features Latching, Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Iq (typ) (mA) 0.00025 Output driver type/reset output Active-low, Open-drain 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) -40 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: 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
  • 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: 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-Q1 is an ultra-low power consumption (250nA typical) device offering a precision voltage supervisor with a programmable timeout watchdog timer. The TPS35-Q1 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range.

The TPS35-Q1 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-Q1 provides a performance upgrade alternative to TPS3851-Q1 device family. The TPS35-Q1 is available in a small 8-pin SOT-23 package.

The TPS35-Q1 is an ultra-low power consumption (250nA typical) device offering a precision voltage supervisor with a programmable timeout watchdog timer. The TPS35-Q1 supports wide threshold levels for undervoltage supervision with 1.2% accuracy across the specified temperature range.

The TPS35-Q1 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-Q1 provides a performance upgrade alternative to TPS3851-Q1 device family. The TPS35-Q1 is available in a small 8-pin SOT-23 package.
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* Data sheet TPS35-Q1 Automotive Nano IQ Precision Voltage Supervisor with Precision Timeout Watchdog Timer datasheet (Rev. B) PDF | HTML 27 Aug 2024
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

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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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