TPS3890

ACTIVE

Low-quiescent current 1% accuracy supervisor with programmable delay

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.15, 1.44, 1.73, 1.9, 2.4, 2.89, 3.17, adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.002 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0.008, 0.018, 0.025 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.15, 1.44, 1.73, 1.9, 2.4, 2.89, 3.17, adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.002 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0.008, 0.018, 0.025 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
WSON (DSE) 6 2.25 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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TPS3840 ACTIVE Nanopower 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.
TPS3899 ACTIVE Nanopower supervisor with programmable sense and reset delay This product offers a separate SENSE pin with high accuracy adjustable or multiple fixed threshold options and programmable SENSE delay feature.

Technical documentation

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Type Title Date
* Data sheet TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. A) PDF | HTML 24 May 2016
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 brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 05 Apr 2019
Application note Comparing Voltage and Processor Monitoring Solutions 05 Apr 2019
Application brief Using The Manual Reset On Voltage Supervisors to Debounce a Pushbutton Switch 08 Mar 2019
Circuit design Auxiliary circuits for high-performance audio 16 Jan 2019
Application brief 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 PDF | HTML 07 Mar 2017

Design & development

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Evaluation board

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Evaluation board

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

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User guide: PDF
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Simulation model

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SLVMBN5.ZIP (50 KB) - PSpice Model
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TPS389025 Unencrypted PSpice Transient Model

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TPS389030 PSpice Transient Model

SLVMBN0.ZIP (52 KB) - PSpice Model
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TPS389030 Unencrypted PSpice Transient Model

SLVMBN1.ZIP (3 KB) - PSpice Model
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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

TPS389033G Unencrypted PSpice Transient Model Package (Rev. A)

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TPS389033G Unencrypted Spice Transient Model

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TPS389033K Unencrypted PSpice Transient Model Package (Rev. A)

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TPS389050 Unencrypted PSpice Transient Model

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TPS389050 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM798A.ZIP (39 KB) - PSpice Model
Simulation model

TPS389050G Unencrypted PSpice Transient Model Package (Rev. A)

SBVM797A.ZIP (39 KB) - PSpice Model
Simulation model

TPS389050G Unencrypted Spice Transient Model

SBVJ001.ZIP (2 KB) - Spice Model
Simulation model

TPS389050L Unencrypted PSpice Transient Model Package (Rev. A)

SBVM801A.ZIP (39 KB) - PSpice Model
Simulation model

TPS389050L Unencrypted Spice 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

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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 (...)
Design guide: PDF
Schematic: PDF
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 (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
WSON (DSE) 6 View options

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