NEW

TPS3808E-Q1

ACTIVE

Automotive, 600-nA ultra-low quiescent current, programmable-delay supervisory circuit

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.67, 3.08, 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 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.67, 3.08, 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 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Automotive Watchdog timer WDI (s) None 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 0.9 V to 5 V
    • Adjustable voltage option available (0.405 V)
    • Separate Sense pin for monitoring and VDD pin for power
  • Miniature solution with ultra-low power consumption
    • 0.6 µA typical quiescent current
    • Compact 6-pin SOT23 package (2.9 mm x 1.6 mm)
  • Highly configurable reset time delay to prevent unsafe power on
    • Adjustable from 1.25 ms to 10 s
  • 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 0.9 V to 5 V
    • Adjustable voltage option available (0.405 V)
    • Separate Sense pin for monitoring and VDD pin for power
  • Miniature solution with ultra-low power consumption
    • 0.6 µA typical quiescent current
    • Compact 6-pin SOT23 package (2.9 mm x 1.6 mm)
  • Highly configurable reset time delay to prevent unsafe power on
    • Adjustable from 1.25 ms to 10 s
  • Separate Manual Reset Input (MR) to assert RESET output on demand

The TPS3808E-Q1 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 V, 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 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808E device has a very low typical quiescent current of 0.6 µA, 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 0.4 V to 5 V, 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 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808E device has a very low typical quiescent current of 0.6 µA, 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).

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet TPS3808E-Q1 Low-Quiescent-Current, Programmable-Delay Supervisory Circuit for Automotive datasheet (Rev. B) PDF | HTML 13 Dec 2023

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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 (...)
User guide: PDF
Not available on TI.com
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos