Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable, 1.15, 1.44, 1.73, 2.4, 2.89, 2.93, 3.066, 3.17, 4.4, 4.65, 4.8 Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable, 1.15, 1.44, 1.73, 2.4, 2.89, 2.93, 3.066, 3.17, 4.4, 4.65, 4.8 Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125
WSON (DSE) 6 2 mm² 1.5 x 1.5
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
  • Very Low Supply Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 5 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
  • Very Low Supply Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 5 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON

The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).

The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).

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Technical documentation

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Type Title Date
* Data sheet TPS3890-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B) 28 Feb 2018
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Functional safety information TPS3890-Q1 Functional Safety FIT Rate and Failure Mode Distribution 18 Dec 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Technical article How voltage references and supervisors help achieve ASIL functional safety goals 10 May 2019
User guide TPS3890EVM-775 Evaluation 31 Mar 2016

Design & development

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

Evaluation board

TPS3890EVM-775 — TPS3890 Low-Quiescent-Current 1% Accurate Supervisor With Programmable Delay Evaluation Module

The TPS3890EVM-775 evaluation module is designed for a typical configuration to evaluate the operation and performance of the TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable-Delay. The EVM circuit board is configured to be a reference design for engineering applications (...)
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Simulation model

TPS389012 PSpice Transient Model

SLVMBM0.ZIP (55 KB) - PSpice Model
Simulation model

TPS389012 Unencrypted PSpice Transient Model

SLVMBM1.ZIP (3 KB) - PSpice Model
Simulation model

TPS389015 Unencrypted PSpice Transient Model

SLVMBM2.ZIP (3 KB) - PSpice Model
Simulation model

TPS389015 PSpice Transient Model

SLVMBM3.ZIP (49 KB) - PSpice Model
Simulation model

TPS389018 PSpice Transient Model

SLVMBM4.ZIP (49 KB) - PSpice Model
Simulation model

TPS389018 Unencrypted PSpice Transient Model

SLVMBM5.ZIP (3 KB) - PSpice Model
Simulation model

TPS389025 Unencrypted PSpice Transient Model

SLVMBM8.ZIP (3 KB) - PSpice Model
Simulation model

TPS389025 PSpice Transient Model

SLVMBM9.ZIP (49 KB) - PSpice Model
Simulation model

TPS389030 PSpice Transient Model

SLVMBN0.ZIP (52 KB) - PSpice Model
Simulation model

TPS389030 Unencrypted PSpice Transient Model

SLVMBN1.ZIP (3 KB) - PSpice Model
Simulation model

TPS389033 PSpice Transient Model

SLVMBN2.ZIP (51 KB) - PSpice Model
Simulation model

TPS389033 Unencrypted PSpice Transient Model

SLVMBN3.ZIP (3 KB) - PSpice Model
Simulation model

TPS389001 Unencrypted PSpice Transient Model

SLVMBN4.ZIP (3 KB) - PSpice Model
Simulation model

TPS389001 PSpice Transient Model

SLVMBN5.ZIP (50 KB) - PSpice Model
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 (...)
Reference designs

TIDA-050008 — ADAS power reference design with improved voltage supervision

This automotive power reference design supports additional precision voltage supervision and window watchdog for safety MCUs in advanced driver assistance systems (ADAS). These ADAS systems can control driving functions, such as automated emergency brake, lane keep assist and adaptive cruise (...)
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WSON (DSE) 6 View options

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