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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 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 VCC (Max) (V) 5.5 Rating Catalog VCC (Min) (V) 1.1 Watchdog timer WDI (sec) 1.6 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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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
User guides Hybrid RF and PLC Communications Design Guide (Rev. B) May 20, 2019
User guides Extending Network Coverage Reliability Standards-Based Protocols Design Guide (Rev. A) May 17, 2019
User guides G3-PLC (CENELEC Band) Data Concentrator Design Guide Dec. 28, 2015
User guides G3-PLC (FCC Band) Data Concentrator Design Guide (Rev. A) Dec. 11, 2015
User guides SOMPLC-F28PLC83 System on Module for Power Line Communication User's Guide (Rev. B) Jun. 11, 2015
User guides System on Module for Power-Line Communication (CENELEC Freq. Band) Design Guide Mar. 19, 2015
User guides System on Module for Power-Line Communication (FCC Frequency Band) Design Guide Mar. 10, 2015
User guides System on Module for G3 Power Line Communication (CENELEC) Design Guide (Rev. A) Feb. 26, 2015
User guides SOMPLC-F28PLC83 System on Module for Power Line Communication User's Guide (Rev. A) Feb. 25, 2015
User guides System on Module for Industrial Power Line Communication (CENELEC) Design Guide Aug. 27, 2014
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Technical articles Using telemetry in point-of-load applications Jun. 24, 2014
User guides SOMPLC-F28M35 Power Line Communication System on Module Design Guide Mar. 18, 2014
Selection guides Voltage Monitor and Reset IC Solutions Selection Wheel Aug. 06, 2013
Application notes Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
More literature CAN Quick Start Guide Feb. 10, 2004
User guides CAN Software Installation Guide Feb. 10, 2004
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Design & development

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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

Software development

SUPPORT SOFTWARE Download
SPRCA41A.ZIP (6367 KB)
SUPPORT SOFTWARE Download
TIDCC37B.ZIP (2412 KB)
SUPPORT SOFTWARE Download
TIDCC75A.ZIP (2421 KB)

Design tools & simulation

ASSEMBLY DRAWINGS Download
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SCHEMATICS Download
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Reference designs

REFERENCE DESIGNS Download
Non-isolated power architecture with diagnostics reference design for protection relay modules
TIDA-010055 — This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
document-generic Schematic document-generic User guide

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SOT-23 (DBV) 5 View options

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