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Reset & watchdog ICs

TPS3808E-Q1

ACTIVE

Automotive, 600nA ultra-low quiescent current supervisor with programmable delay and manual reset

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Data sheet

TPS3808E-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.84, 1.12, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.08, 4.65, adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0006 Output driver type/reset output Active-low, Open-drain Watchdog timer WDI (s) None Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.84, 1.12, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.08, 4.65, adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0006 Output driver type/reset output Active-low, Open-drain Watchdog timer WDI (s) None Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C
  • Undervoltage monitoring for power rails
    • Reliable monitoring with high threshold accuracy (1% typical)
    • Fixed voltage threshold options from 0.9V to 5V
    • Adjustable voltage option available (0.405V)
    • Separate Sense pin for monitoring and VDD pin for power
  • Miniature solution with ultra-low power consumption
    • 0.6µA typical quiescent current
    • Compact 6-pin SOT23 package (2.9mm x 1.6mm)
  • Highly configurable reset time delay to prevent unsafe power on
    • Adjustable from 1.25ms to 150s
  • Separate Manual Reset Input (MR) to assert RESET output on demand
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C
  • Undervoltage monitoring for power rails
    • Reliable monitoring with high threshold accuracy (1% typical)
    • Fixed voltage threshold options from 0.9V to 5V
    • Adjustable voltage option available (0.405V)
    • Separate Sense pin for monitoring and VDD pin for power
  • Miniature solution with ultra-low power consumption
    • 0.6µA typical quiescent current
    • Compact 6-pin SOT23 package (2.9mm x 1.6mm)
  • Highly configurable reset time delay to prevent unsafe power on
    • Adjustable from 1.25ms to 150s
  • Separate Manual Reset Input (MR) to assert RESET output on demand

The TPS3808E-Q1 family of microprocessor supervisory circuits monitors system voltages from 0.4V to 5V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3808E-Q1 device uses a precision reference to achieve 0.5% threshold accuracy. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 150s by connecting the CT pin to an external capacitor. The TPS3808E device has a very low typical quiescent current of 0.6µA, and is designed for battery-powered applications. The TPS3808E-Q1 is available in the SOT-23-6 , and is fully specified over a temperature range of –40°C to 125°C (TJ).

The TPS3808E-Q1 family of microprocessor supervisory circuits monitors system voltages from 0.4V to 5V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3808E-Q1 device uses a precision reference to achieve 0.5% threshold accuracy. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 150s by connecting the CT pin to an external capacitor. The TPS3808E device has a very low typical quiescent current of 0.6µA, and is designed for battery-powered applications. The TPS3808E-Q1 is available in the SOT-23-6 , and is fully specified over a temperature range of –40°C to 125°C (TJ).
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* Data sheet TPS3808E-Q1 Low-Quiescent-Current, Programmable-Delay Supervisory Circuit for Automotive datasheet (Rev. C) PDF | HTML 04 Aug 2025
Functional safety information TPS3808E-Q1 Functional Safety FIT Rate, Failure Mode Distribution PDF | HTML 13 Mar 2024
Application brief Using Voltage Supervisors in High Voltage Applications (Rev. B) PDF | HTML 20 Feb 2023

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Evaluation board

TPS3808G01Q1EVM — TPS3808G01-Q1 automotive voltage supervisor evaluation module

The TPS3808G01Q1EVM is an evaluation modulate (EVM) for the TPS3808G01-Q1 voltage supervisor. The EVM has a supply voltage range from 1.8 V to 6.5 V. It offers input connections for all device input and output pins. Test points are provided to give the user access to an extra ground (...)
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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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