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Product details

Parameters

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.93, 4.55 Features Active-low enable, Manual reset, Watchdog timer Reset threshold accuracy (%) 2.4 Output driver type/reset output Active-low, Push-pull Time delay (ms) 25 VCC (Max) (V) 5.5 Rating Catalog VCC (Min) (V) 1.1 Watchdog timer WDI (sec) 0.2 Operating temperature range (C) -40 to 85 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

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

Features

  • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
  • Manual Reset Input (TPS3820/3/5/8)
  • Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5), and Open Drain (TPS3828)
  • Supply Voltage Supervision Range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog Timer (TPS3820/3/4/8)
  • Supply Current of 15 µA (Typical)
  • 5-Pin SOT-23 Package
  • Temperature Range: −40°C to 85°C

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Description

The TPS382x 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 less than 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− + VHYS). 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 family also offers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).

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Exact equivalent in functionality and parametrics to the compared device:
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Technical documentation

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Type Title Date
* Datasheet TPS382x Voltage Monitor With Watchdog Timer datasheet (Rev. L) Jan. 29, 2018
Selection guides Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) Feb. 28, 2020
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Application notes Latching a Voltage Supervisor (Reset IC) (Rev. A) Apr. 05, 2019
Application notes Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) Oct. 09, 2018
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
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Technical articles Altium and WEBENCH – together at last Jul. 12, 2014
Technical articles Using telemetry in point-of-load applications Jun. 24, 2014
Selection guides Voltage Monitor and Reset IC Solutions Selection Wheel Aug. 06, 2013
Application notes Disabling the Watchdog Timer for TI's Family of Supervisors Oct. 30, 2003

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
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 (...)
Features
  • Five different TPS382x-Q1 devices
  • Watchdog input
  • Manual reset jumpers
  • Push-pull and open-drain outputs

Reference designs

REFERENCE DESIGNS Download
Spectrum Analyzer Signal Conditioning and Processing for Capturing Arc Signatures Reference Design
TIDA-00929 — The TIDA-00929 TI design demonstrates bandwidth optimized analog front end (AFE) and real-time FIR implementation using low power to capture broadband frequency spectrum in any waveform. Operational amplifier in each signal path is chosen based on the gain, signal bandwidth, low noise, close to the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

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