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Supervisor & reset ICs

TPS3702

ACTIVE

High-accuracy window voltage detector for overvoltage and undervoltage monitoring

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Data sheet

TPS3702

ACTIVE
Data sheet Order now

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1, 1.2, 1.8, 3.3, 5 Features Undervoltage and overvoltage monitor, Wide input voltage Reset threshold accuracy (%) 0.9 Iq (typ) (mA) 0.006 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0 Supply voltage (min) (V) 2 Supply voltage (max) (V) 18 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, 1.2, 1.8, 3.3, 5 Features Undervoltage and overvoltage monitor, Wide input voltage Reset threshold accuracy (%) 0.9 Iq (typ) (mA) 0.006 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0 Supply voltage (min) (V) 2 Supply voltage (max) (V) 18 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Input Voltage Range: 2V to 18V
  • High threshold accuracy:
    • 0.25% (typical)
    • 0.9% (–40°C to 125°C)
  • Fixed window thresholds optimized for nominal rails between 1V and 5V
  • Open-drain outputs for overvoltage and undervoltage indication
  • Internal glitch immunity
  • Threshold adjust using the SET pin
  • Low quiescent current: 7µA (typical)
  • Internal threshold hysteresis: 0.55%, 1.0%
  • SOT-6 package
  • Input Voltage Range: 2V to 18V
  • High threshold accuracy:
    • 0.25% (typical)
    • 0.9% (–40°C to 125°C)
  • Fixed window thresholds optimized for nominal rails between 1V and 5V
  • Open-drain outputs for overvoltage and undervoltage indication
  • Internal glitch immunity
  • Threshold adjust using the SET pin
  • Low quiescent current: 7µA (typical)
  • Internal threshold hysteresis: 0.55%, 1.0%
  • SOT-6 package

The TPS3702 is an integrated overvoltage and undervoltage window voltage detector in a small SOT-6 package. This highly accurate voltage detector is an excellent choice for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis options of 0.55% and 1.0% prevent false reset signals when the monitored voltage supply is in the normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals.

The TPS3702 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further increases overall accuracy and reduces solution size and cost. The SET pin is used to select between the two available threshold voltages designed into each device. A separate SENSE input pin and VDD pin allow for the redundancy sought by safety-critical and high-reliability systems. This device also features independent reset outputs for the OV and UV pins; as a result of the open-drain configuration, UV and OV can be tied together.

This device has a low typical quiescent current specification of 7µA and is qualified for use over the industrial temperature range of –40°C to 125°C.

The TPS3702 is an integrated overvoltage and undervoltage window voltage detector in a small SOT-6 package. This highly accurate voltage detector is an excellent choice for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis options of 0.55% and 1.0% prevent false reset signals when the monitored voltage supply is in the normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals.

The TPS3702 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further increases overall accuracy and reduces solution size and cost. The SET pin is used to select between the two available threshold voltages designed into each device. A separate SENSE input pin and VDD pin allow for the redundancy sought by safety-critical and high-reliability systems. This device also features independent reset outputs for the OV and UV pins; as a result of the open-drain configuration, UV and OV can be tied together.

This device has a low typical quiescent current specification of 7µA and is qualified for use over the industrial temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet TPS3702 High -Accuracy Over and Undervoltage Monitoring datasheet (Rev. A) PDF | HTML 22 Feb 2024
Functional safety information TPS3702 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 03 Mar 2021
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 Mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 Feb 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Technical article Tips and tricks for optimizing your voltage supervisor PDF | HTML 07 Mar 2017
Technical article Oh yes! My FPGA application is safe PDF | HTML 26 Oct 2015

Design & development

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

Evaluation board

LAUNCHXL-F280049C — F280049C LaunchPad™ development kit C2000™ Piccolo™ MCU

LAUNCHXL-F280049C is a low-cost development board for TI C2000™ Real-Time Controllers series of F28004x devices. Ideal for initial evaluation and prototyping, it provides a standardized and easy to use platform to develop your next application. This extended version LaunchPad offers extra (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS3702CX33EVM-683 — TPS3702CX33EVM-683 evaluation module

The TPS3702CX33EVM-683 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS3702, which is a low power, high accuracy over-voltage and under-voltage detector that is available with fixed threshold options. The EVM circuit is configured to be a reference design (...)

User guide: PDF
Not available on TI.com
Daughter card

TMDSCNCD280049C — F280049C evaluation module for C2000™ MCU controlCARD™

TMDSCNCD280049C is an HSEC180 controlCARD based evaluation and development tool for the C2000™ F28004x series of microcontroller products. controlCARDs are ideal to use for initial evaluation and system prototyping. controlCARDs are complete board-level modules that utilize one of two standard form (...)

User guide: PDF | HTML
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Daughter card

TMDSCNCD28379D — F28379D development kit for C2000™ Delfino MCU controlCARD™

TMDSCNCD28379D is an HSEC180 controlCARD based evaluation and development tool for the F2837xD,  F2837xS, and F2807x series in the TI MCU. controlCARDs are ideal to use for initial evaluation and system prototyping. controlCARDs are complete board-level modules that utilize one of two standard (...)

User guide: PDF | HTML
Not available on TI.com
Development kit

TMDSDOCK28379D — F28379D Delfino Experimenter Kit

TMDSDOCK28379D is a HSEC180 controlCARD based evaluation and development tool for the C2000™ Delfino™ F2837x and Piccolo F2807x series of microcontroller products. The Docking Station provides power to the controlCARD and has a bread-board area for prototyping. Access to the key device (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS3702CX33 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM438A.ZIP (91 KB) - PSpice Model
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Calculation tool

SBVC045 — TPS3702 Decoder Calculator

Supported products & hardware

Supported products & hardware

Products
Supervisor & reset ICs
TPS3702 — High-accuracy window voltage detector for overvoltage and undervoltage monitoring
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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 (...)
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Reference designs

PMP40690 — 4-kW interleaved CCM totem pole bridgeless PFC reference design using C2000™ MCU and GaN

This reference design is a 4-kW interleaved CCM totem pole (TTPL) bridgeless PFC reference design using a 64-pin C2000™ microcontroller, LM3410 gallium nitride device and TMCS1100 hall sensor. It is based on TIDM-02008 bidirectional interleaved CCM TTPL bridgeless PFC reference (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-010052 — Safety power supply for motor drives reference design

This reference design implements a safe-power supply for powering up microcontrollers in an architecture featuring two MCUs. The design has several protection features including overvoltage protection and short circuit protection to prevent the MCUs from getting damaged. The DC/DCs, LMR36515 and (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00392 — Monitoring Voltage Rails on Delfino with TPS3702 Reference Design

The C2000 Delfino microcontrollers' demand for a tight tolerance on both of its supply rails; this supervisory topology is designed to monitor the two voltage rails and assert a reset when either rail is not within its threshold. The two supervisors will monitor for both undervoltage and (...)
Design guide: PDF
Schematic: PDF
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SOT-23-THN (DDC) 6 Ultra Librarian
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