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Product details

Parameters

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 Active-low enable, Manual reset Reset threshold accuracy (%) 1 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable VCC (Max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive VCC (Min) (V) 1.5 Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

WSON (DSE) 6 2 mm² 1.5 x 1.5 open-in-new Find other Supervisor & reset ICs

Features

  • 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

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Description

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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS3840-Q1 ACTIVE Automotive high-input voltage supervisor with manual reset and programmable-reset time delay Offers more fixed voltage threshold options, a wide 10-V input voltage, low IQ (350 nA) and 1% threshold accuracy.

Technical documentation

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Type Title Date
* Datasheet TPS3890-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B) Feb. 28, 2018
Application notes TPS3890-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 18, 2019
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical articles How voltage references and supervisors help achieve ASIL functional safety goals May 10, 2019
User guides TPS3890EVM-775 Evaluation Mar. 31, 2016
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014
Technical articles Altium and WEBENCH – together at last Jul. 12, 2014

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$20.00
Description
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 (...)
Features
  • High Threshold Accuracy: ±0.5% Typ
  • Very Low IQ: 2 µA typ.
  • Manual Reset (MR) Input
  • Open Drain RESET Output

Design tools & simulation

SIMULATION MODELS Download
SLVMBM0.ZIP (55 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM1.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM2.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM3.ZIP (49 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM4.ZIP (49 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM5.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM8.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBM9.ZIP (49 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN0.ZIP (52 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN1.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN2.ZIP (51 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN3.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN4.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBN5.ZIP (50 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
ADAS power reference design with improved voltage supervision
TIDA-050008 This TI design provides an automotive power solution with 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DSE) 6 View options

Ordering & quality

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