Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable, 1.15, 1.44, 1.73, 2.4, 2.89, 3.17 Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog 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, 3.17 Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-low, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125
WSON (DSE) 6 2 mm² 1.5 x 1.5
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 µs to 30 s
  • Very Low Quiescent 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 3.3 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
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 µs to 30 s
  • Very Low Quiescent 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 3.3 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 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 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890 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 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 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890 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 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. A) 24 May 2016
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 Mar 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note Latching a Voltage Supervisor (Reset IC) (Rev. A) 05 Apr 2019
Application note Comparing Voltage and Processor Monitoring Solutions 05 Apr 2019
Application note Using The Manual Reset On Voltage Supervisors to Debounce a Pushbutton Switch 08 Mar 2019
Application note Auxiliary circuits for high-performance audio 16 Jan 2019
Application note Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D 27 Jun 2018
Application note How Comparator Topology Influences Propagation Delay 05 Apr 2017
Technical article Tips and tricks for optimizing your voltage supervisor 07 Mar 2017
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

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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

TPS389050G Unencrypted Spice Transient Model

SBVJ001.ZIP (2 KB) - Spice Model
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TPS389030 PSpice Transient Model

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TPS389030 Unencrypted PSpice Transient Model

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TPS389033 PSpice Transient Model

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TPS389033 Unencrypted PSpice Transient Model

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

TPS389001 Unencrypted PSpice Transient Model

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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-050026-23882 — 24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications ;

This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x (...)
Reference designs

TIDA-050026-23881 — 24-port (PoE 2, 4-pair) power sourcing equipment reference design for multi-port applications ;

This reference design showcases a Type-4 (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family, our (...)
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WSON (DSE) 6 View options

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