Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.93, 4.55 Features Manual reset capable, Watchdog timer Reset threshold accuracy (%) 2.4 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 Rating Automotive Watchdog timer WDI (sec) 1.6 Operating temperature range (C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.93, 4.55 Features Manual reset capable, Watchdog timer Reset threshold accuracy (%) 2.4 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 Rating Automotive Watchdog timer WDI (sec) 1.6 Operating temperature range (C) -40 to 125
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-23 (DBV) 5 5 mm² 1.60 x 2.90
  • Qualified for automotive applications
  • 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 C4B
  • ESD protection exceeds 2000 V Per MIL-STD-883, Method 3015; using human body model (C = 100 pF, R = 1500 Ω)
  • Power-on reset generator with fixed delay time of 200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15 µA (Typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C
  • Qualified for automotive applications
  • 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 C4B
  • ESD protection exceeds 2000 V Per MIL-STD-883, Method 3015; using human body model (C = 100 pF, R = 1500 Ω)
  • Power-on reset generator with fixed delay time of 200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15 µA (Typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x-xx-Q1 family also offers watchdog time out options of 200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-xx-Q1).

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x-xx-Q1 family also offers watchdog time out options of 200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-xx-Q1).

Download

Similar products you might be interested in

open-in-new Compare products
Drop-in replacement with upgraded functionality to the compared device.
TPS3828 ACTIVE Voltage monitor with watchdog timer Catalog version of this device
Similar functionality to the compared device.
TPS3431-Q1 ACTIVE Automotive, standard programmable watchdog timer with enable Automotive standalone watchdog timer with no built-in voltage monitoring feature
TPS3850-Q1 ACTIVE Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay Automotive window detector with built-in window watchdog timer for overvoltage and undervoltage detection
TPS3851-Q1 ACTIVE Automotive, high-accuracy voltage supervisor with Integrated watchdog timer Automotive voltage supervisor with standard watchdog timer that offers high accuracy (0.8%) and low IQ (10 µA)

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet TPS382x-xx-Q1 Voltage Monitor With Watchdog Timer datasheet (Rev. D) PDF | HTML 17 Jul 2019
Functional safety information TPS382x-Q1 Functional Safety FIT Rate and Failure Mode Distribution 19 Dec 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Design guide TIDA-00143 Overview 28 Apr 2014
User guide TIDA-00143 Quick Start Guide 28 Apr 2014
Test report TIDA-00143 Test Results 28 Apr 2014

Design & development

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

Evaluation board

TPS382-Q1EVM — Evaluation module for the TPS382x-Q1 voltage supervisors with integrated watchdog

The TPS382-Q1EVM evaluation module (EVM) has five different TPS382x-Q1 devices to let you evaluate and test the different features of the product family.  The EVM includes devices with 2.5-V, 3-V, 3.3-V and 5-V fixed monitoring, watchdog input, manual reset, (...)
Not available on TI.com
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 (...)
Schematic

TIDA-00143 Design File

TIDC390.ZIP (1221 KB)
Schematic

TIDA-00143 Schematic and Block Diagram

TIDR556.PDF (711 KB)
Bill of materials (BOM)

TIDA-00143 BOM

TIDR557.PDF (108 KB)
Gerber file

TIDA-00143 Gerber

TIDC389.ZIP (826 KB)
Reference designs

TIDA-00143 — Automotive 60W Brushless DC (BLDC) Motor Drive

This TIDA-00143 reference design is a BLDC motor controller and is designed to operate from a single 12V (nominal) power supply which can vary over a wide range of voltages as found in typical automotive applications.  The board is designed to drive motors in the 60W range, which require (...)
User guide: PDF
Schematic: PDF
Reference designs

TIDA-00929 — Spectrum Analyzer Signal Conditioning and Processing for Capturing Arc Signatures Reference Design

This reference design demonstrates bandwidth-optimized analog front end (AFE) and real-time FIR implementation using low power to capture broadband frequency spectrum in any waveform. An operational amplifier in each signal path is chosen based on the gain, signal bandwidth, low noise and (...)
Schematic: PDF
Package Pins Download
SOT-23 (DBV) 5 View options

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

Support & training

TI E2E™ forums with technical support from TI engineers

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