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TPS3703-Q1

ACTIVE

Automotive high-accuracy window supervisor with reset time delay

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Data sheet

TPS3703-Q1

ACTIVE
Data sheet Order now

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 0.85, 0.9, 1, 1.1, 1.15, 1.2, 1.25, 1.8, 2.5, 2.8, 2.9, 3.3, 5 Features Latching, Manual reset capable, Separate VDD & sense, Undervoltage and overvoltage monitor Reset threshold accuracy (%) 0.7 Iq (typ) (mA) 0.0045 Output driver type/reset output Active-low, Open-drain Time delay (ms) 1, 5, 10, 20, 100, 200 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 0.85, 0.9, 1, 1.1, 1.15, 1.2, 1.25, 1.8, 2.5, 2.8, 2.9, 3.3, 5 Features Latching, Manual reset capable, Separate VDD & sense, Undervoltage and overvoltage monitor Reset threshold accuracy (%) 0.7 Iq (typ) (mA) 0.0045 Output driver type/reset output Active-low, Open-drain Time delay (ms) 1, 5, 10, 20, 100, 200 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
WSON (DSE) 6 2.25 mm² 1.5 x 1.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
  • Input voltage range: 1.7 V to 5.5 V
  • Undervoltage lockout (UVLO): 1.7 V
  • Low quiescent current: 7 µA (Max)
  • High threshold accuracy:
    • ± 0.25% (typical)
    • ± 0.7% (–40°C to +125°C)
  • Fixed window threshold levels
    • 50-mV steps from 500 mV to 1.3 V
    • 1.5 V, 1.8 V, 2.5 V, 2.8 V, 2.9 V 3.3 V, 5 V
    • Available in UV threshold only
    • Window tolerance available from ±3% to ±7%
  • User adjustable voltage threshold levels
  • Internal glitch immunity and hysteresis
  • Fixed time delay options: 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, 200 ms
  • Programmable time delay option with a single external capacitor
  • Open-drain active low UV and OV monitor
  • RESET voltage latching output mode
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
  • Input voltage range: 1.7 V to 5.5 V
  • Undervoltage lockout (UVLO): 1.7 V
  • Low quiescent current: 7 µA (Max)
  • High threshold accuracy:
    • ± 0.25% (typical)
    • ± 0.7% (–40°C to +125°C)
  • Fixed window threshold levels
    • 50-mV steps from 500 mV to 1.3 V
    • 1.5 V, 1.8 V, 2.5 V, 2.8 V, 2.9 V 3.3 V, 5 V
    • Available in UV threshold only
    • Window tolerance available from ±3% to ±7%
  • User adjustable voltage threshold levels
  • Internal glitch immunity and hysteresis
  • Fixed time delay options: 50 µs, 1 ms, 5 ms, 10 ms, 20 ms, 100 ms, 200 ms
  • Programmable time delay option with a single external capacitor
  • Open-drain active low UV and OV monitor
  • RESET voltage latching output mode

The TPS3703-Q1 device is an integrated overvoltage (OV) and undervoltage (UV) monitor or reset IC in industry’s smallest 6-pin DSE package. This highly accurate voltage supervisor is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis 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 TPS3703-Q1 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, solution size, and improves reliability for safety systems. The Capacitor Time (CT) pin is used to select between the two available reset time delays designed into each device and also to adjust the reset time delay by connecting a capacitor. A separate SENSE input pin and VDD pin allow for the redundancy sought by high-reliability systems.

This device has a low typical quiescent current specification of 4.5 µA (typical). The TPS3703-Q1 is suitable for automotive applications and is qualified for AEC-Q100 Grade 1.

The TPS3703-Q1 device is an integrated overvoltage (OV) and undervoltage (UV) monitor or reset IC in industry’s smallest 6-pin DSE package. This highly accurate voltage supervisor is ideal for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis 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 TPS3703-Q1 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, solution size, and improves reliability for safety systems. The Capacitor Time (CT) pin is used to select between the two available reset time delays designed into each device and also to adjust the reset time delay by connecting a capacitor. A separate SENSE input pin and VDD pin allow for the redundancy sought by high-reliability systems.

This device has a low typical quiescent current specification of 4.5 µA (typical). The TPS3703-Q1 is suitable for automotive applications and is qualified for AEC-Q100 Grade 1.
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Type Title Date
* Data sheet TPS3703-Q1Overvoltage and Undervoltage Reset IC With Time Delay and Manual Reset datasheet (Rev. D) PDF | HTML 29 Mar 2021
White paper Designing a Power Supply for a Safety MCU to Meet Functional Safety ASIL B PDF | HTML 15 Nov 2023
Application note Voltage and Processor Monitoring Solutions in Factory Automation and Control App (Rev. A) 05 Aug 2021
Functional safety information TPS3703-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 15 Jan 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note Implementing Voltage References and Supervisors Into Your Traction Inverter Desi 22 May 2019
Technical article How voltage references and supervisors help achieve ASIL functional safety goals PDF | HTML 10 May 2019
Technical article How diagnostics help your ADAS design achieve higher levels of functional safety PDF | HTML 06 May 2019
Application note Comparing Voltage and Processor Monitoring Solutions 05 Apr 2019

Design & development

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Evaluation board

TPS3703Q1-A4120EVM — TPS3703-Q1 high-accuracy window supervisor with reset time delay evaluation module

The TPS3703Q1-A4120 evaluation module (EVM) tests the features of the TPS3703-Q1 device to the fullest extent. TPS3703-Q1 is a high-accuracy window supervisor or reset IC in a 6-pin very-very-thin small-outline no-lead (WSON) package. TPS3703-Q1 includes a CT pin that is used to (...)

User guide: PDF
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Simulation model

TPS3703A4330-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM922A.ZIP (74 KB) - PSpice Model
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Simulation model

TPS3703B4125-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM920A.ZIP (73 KB) - PSpice Model
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Simulation model

TPS3703C4330-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM921A.ZIP (72 KB) - PSpice Model
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Simulation model

TPS3703D4120-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM919A.ZIP (74 KB) - PSpice Model
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Simulation model

TPS3703D7330-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SBVM918A.ZIP (75 KB) - PSpice Model
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Simulation model

TPS3703E4080-Q1 Unencrypted PSpice Model

SNVMBT3.ZIP (3571 KB) - PSpice 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 (...)
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