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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, 3.17 Features Active-low enable, Manual reset 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 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

  • 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
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Description

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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Exact equivalent in functionality and parametrics to the compared device:
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

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. A) May 24, 2016
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) Mar. 17, 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application note Latching a Voltage Supervisor (Reset IC) (Rev. A) Apr. 05, 2019
Application note Comparing Voltage and Processor Monitoring Solutions Apr. 05, 2019
Application note Using The Manual Reset On Voltage Supervisors to Debounce a Pushbutton Switch Mar. 08, 2019
Application note Auxiliary circuits for high-performance audio Jan. 16, 2019
Application note Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D Jun. 27, 2018
Application note How Comparator Topology Influences Propagation Delay Apr. 05, 2017
Technical articles Tips and tricks for optimizing your voltage supervisor Mar. 07, 2017
User guide TPS3890EVM-775 Evaluation Mar. 31, 2016

Design & development

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

Hardware development

EVALUATION BOARD Download
Description

PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.

Features
  • 24 port PoE PSE system and expandable to 48 ports
  • Highly flexible system with configurable GUI and host interface
  • Multiport power management
  • IEEE802.3bt compliance
  • Mutiple power supplies
  • Supporting legacy powered devices
EVALUATION BOARD Download
20
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 MODEL Download
SBVJ001.ZIP (2 KB) - Spice Model
SIMULATION MODEL Download
SBVJ002.ZIP (2 KB) - Spice Model
SIMULATION MODEL Download
SBVJ003.ZIP (2 KB) - Spice Model
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SBVJ004.ZIP (2 KB) - Spice Model
SIMULATION MODEL Download
SBVJ005.ZIP (2 KB) - Spice Model
SIMULATION MODEL Download
SBVM797A.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SBVM798A.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SBVM799A.ZIP (39 KB) - PSpice Model
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SBVM800A.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SBVM801A.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM0.ZIP (55 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM1.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM2.ZIP (3 KB) - PSpice Model
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SLVMBM3.ZIP (49 KB) - PSpice Model
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SLVMBM4.ZIP (49 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM5.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM6.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM7.ZIP (49 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM8.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBM9.ZIP (49 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN0.ZIP (52 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN1.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN2.ZIP (51 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN3.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN4.ZIP (3 KB) - PSpice Model
SIMULATION MODEL Download
SLVMBN5.ZIP (50 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23882 — 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 FirmPSE (...)
document-generic Schematic
REFERENCE DESIGNS Download
24-port (PoE 2, 4-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23881 — 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 (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
WSON (DSE) 6 View options

Ordering & quality

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

Support & training

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