Home Power management Supervisor & reset ICs Reset & watchdog ICs
Home
Power management
Supervisor & reset ICs
Reset & watchdog ICs

TPS389C03-Q1

ACTIVE

Automotive, 3-channel, overvoltage and undervoltage I²C programmable supervisor with Q&A watchdog

Order now
Data sheet

TPS389C03-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Number of supplies monitored 3 Threshold voltage 1 (typ) (V) adjustable Features Detection time delay, Reset time delay, Separate VDD & sense, Undervoltage and overvoltage monitor Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 1 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 2.5 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Compliant Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 3 Threshold voltage 1 (typ) (V) adjustable Features Detection time delay, Reset time delay, Separate VDD & sense, Undervoltage and overvoltage monitor Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 1 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 2.5 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Compliant Operating temperature range (°C) -40 to 125
WQFN (RTE) 16 9 mm² 3 x 3
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • Q&A Watchdog to monitor SoC software operation
    • Programmable OPEN/CLOSE watchdog timing through I2C (1ms to 864ms)
    • Start-up delay for SoC boot up initialization (2ms to 3.46s)
    • Programmable maximum violation count (up to 7) before WDO assertion
    • Watchdog disable pin (WDE)
  • Monitor state-of-the art SOCs
    • Three channels with three remote sense (TPS389C03-Q1)
    • Input voltage range: 2.6V to 5.5V
    • Undervoltage lockout (UVLO): 2.6V
    • High threshold accuracy:
    • ± 5mV (–40°C to +125°C)
    • Built-in ADC for voltage readouts
    • Fixed window threshold levels
      • 5mV steps from 0.2V to 1.475V
      • 20mV steps in other ranges
  • Miniature package and minimal component cost
    • 3mm × 3mm QFN package
    • User adjustable voltage threshold levels via I2C
    • User adjustable glitch immunity and hysteresis levels via I2C
  • Designed for safety applications
    • Error Signal Monitoring (ESM)
      • Programmable ESM delay via I2C (1ms to 864ms)
    • Cyclic Redundancy Checking (CRC)
    • Packet Error Checking (PEC)
    • Active-low open-drain NIRQ, NRST, and WDO outputs
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Functional Safety-Capable
    • Documentation to aid ISO 26262 system design
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL D
  • Q&A Watchdog to monitor SoC software operation
    • Programmable OPEN/CLOSE watchdog timing through I2C (1ms to 864ms)
    • Start-up delay for SoC boot up initialization (2ms to 3.46s)
    • Programmable maximum violation count (up to 7) before WDO assertion
    • Watchdog disable pin (WDE)
  • Monitor state-of-the art SOCs
    • Three channels with three remote sense (TPS389C03-Q1)
    • Input voltage range: 2.6V to 5.5V
    • Undervoltage lockout (UVLO): 2.6V
    • High threshold accuracy:
    • ± 5mV (–40°C to +125°C)
    • Built-in ADC for voltage readouts
    • Fixed window threshold levels
      • 5mV steps from 0.2V to 1.475V
      • 20mV steps in other ranges
  • Miniature package and minimal component cost
    • 3mm × 3mm QFN package
    • User adjustable voltage threshold levels via I2C
    • User adjustable glitch immunity and hysteresis levels via I2C
  • Designed for safety applications
    • Error Signal Monitoring (ESM)
      • Programmable ESM delay via I2C (1ms to 864ms)
    • Cyclic Redundancy Checking (CRC)
    • Packet Error Checking (PEC)
    • Active-low open-drain NIRQ, NRST, and WDO outputs

The TPS389C03-Q1 device is an integrated multichannel window monitor reset IC with three remote sense pins available in a 16-pin 3mm × 3mm QFN package.

This highly accurate multichannel voltage supervisor is designed for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals. This TPS389C03-Q1 device does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, size, and improves reliability for safety systems. I2C functionality gives flexibility in selecting thresholds, reset delays, glitch filters, and pin functionality. This device offers CRC error checking and a built-in ADC for voltage readouts to provide redundant error checking. The device has a built in Q&A watchdog and Error Signal monitor with independent watchdog enable and watchdog output.

The TPS389C03-Q1 device is an integrated multichannel window monitor reset IC with three remote sense pins available in a 16-pin 3mm × 3mm QFN package.

This highly accurate multichannel voltage supervisor is designed for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals. This TPS389C03-Q1 device does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further optimizes overall accuracy, cost, size, and improves reliability for safety systems. I2C functionality gives flexibility in selecting thresholds, reset delays, glitch filters, and pin functionality. This device offers CRC error checking and a built-in ADC for voltage readouts to provide redundant error checking. The device has a built in Q&A watchdog and Error Signal monitor with independent watchdog enable and watchdog output.
filter Find other Reset & watchdog ICs
Download View video with transcript Video
Request more information

Functional safety manual and reports are available. Request now

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet TPS389C03-Q1 Multichannel Overvoltage and Undervoltage I2 C Programmable Voltage Supervisor and Monitor with Q&A Watchdog datasheet (Rev. H) PDF | HTML 24 Apr 2025
Application brief Discrete Power Design for C2000™ PDF | HTML 15 Aug 2024

Design & development

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

Evaluation board

TPS389006Q1EVM — TPS389006 evaluation module for multichannel, overvoltage and undervoltage, I²C voltage supervisor

The TPS389006Q1 evaluation module (EVM) is a platform for evaluating the six-channel TPS389006-Q1, which is an integrated overvoltage and undervoltage supervisor with I2C programmability. TPS389006-Q1 is available in a 16-pin very-thin quad flatpack no-lead (WQFN) package. In addition, (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS389C0XEVM — TPS389C0x evaluation module

The TPS389C0X evaluation module (EVM) is a platform for evaluating the TPS389C0x device, which is an integrated multichannel overvoltage and undervoltage supervisor with Q&A watchdog and I²C programmability available in a 16-pin WQFN package. TPS389C0XEVM evaluates the 3-channel TPS389C03-Q1 (...)
User guide: PDF | HTML
Not available on TI.com
Application software & framework

FUSION_MFR_GUI — Fusion Digital Power Manufacturing Tool

The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .

The MFR GUI supports the same devices as Fusion Digital Power Designer software.  This tool is typically used in manufacturing (...)

Download
Calculation tool

TPS389C03-WD — TPS389C03 watchdog question and answer table

Q&A Watchdog Answer Table
Supported products & hardware

Supported products & hardware

Products
Reset & watchdog ICs
  • TPS389C03-Q1 — Automotive, 3-channel, overvoltage and undervoltage I²C programmable supervisor with Q&A watchdog
Download
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 (...)
Request
Package Pins CAD symbols, footprints & 3D models
WQFN (RTE) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos