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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 0.91, 1.09, 1.64, 1.69, 3, 3.1, 4.55 Features Undervoltage and overvoltage monitor, Wide input voltage, Dual output Reset threshold accuracy (%) 0.9 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

SOT-23-THN (DDC) 6 5 mm² 2.9 x 1.6 open-in-new Find other Supervisor & reset ICs

Features

  • AEC-Q100 Qualified:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage Range: 2 V to 18 V
  • High Threshold Accuracy:
    • 0.25% (typ)
    • 0.9% (–40°C to 125°C)
  • Fixed Window Thresholds Optimized for Nominal Rails Between 1 V and 5 V
  • Open-Drain Outputs for Overvoltage and Undervoltage Indication
  • Internal Glitch Immunity
  • Threshold Adjust Using the SET Pin
  • Low Quiescent Current: 7 µA (typ)
  • Internal Threshold Hysteresis: 0.55%, 1.0%
  • SOT-6 Package
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Description

The TPS3702-Q1 is an integrated overvoltage and undervoltage window comparator in a small SOT-6 package. This highly accurate voltage detector is ideal 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 its normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals.

The TPS3702-Q1 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 7 µA. The TPS3702-Q1 is suitable for automotive applications and is qualified for AEC-Q100 Grade 1.

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Technical documentation

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Type Title Date
* Datasheet TPS3702-Q1 High-Accuracy, Overvoltage and Undervoltage Monitor datasheet (Rev. B) Dec. 18, 2015
Functional safety information TPS3702-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) Mar. 01, 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Selection guide Automotive Supervisor and Reset IC Selection Guide Feb. 22, 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
document-generic User guide
20
Description

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 for (...)

Features
  • 1% overall accuracy
  • Internal hysteresis options of 0.5% and 1%
  • Low supply current (8 uA typ)
  •  Open drain outputs
  •  SET pin to select ±5% and ±10% thresholds

Design tools & simulation

SIMULATION MODEL Download
SBVM438A.ZIP (91 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
Automotive 2-MP camera module reference design with MIPI CSI-2 video interface, FPD-Link III and POC
TIDA-020002 — This camera module reference design addresses the need for small cameras in automotive systems by combining a 2-megapixel imager with a 4-Gbps serializer. Additionally, it provides power supplies and voltage supervision for both devices in an ultra-small form factor. This design includes a (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23-THIN (DDC) 6 View options

Ordering & quality

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

Support & training

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