TPS3825

ACTIVE

voltage supervisor (reset IC) with manual reset

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Complimentary output, Manual reset capable Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-high, Active-low, Push-Pull Time delay (ms) 200 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Complimentary output, Manual reset capable Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-high, Active-low, Push-Pull Time delay (ms) 200 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Power-on reset generator with a fixed delay time of 200 ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25 ms (TPS3820)
  • Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
  • Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
  • Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15 µA (typical)
  • 5-pin SOT-23 package
  • Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)
  • Power-on reset generator with a fixed delay time of 200 ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25 ms (TPS3820)
  • Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
  • Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
  • Supply voltage supervision range: 2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15 µA (typical)
  • 5-pin SOT-23 package
  • Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)

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, TPS3824, and TPS3828).

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, TPS3824, and TPS3828).

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Technical documentation

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Type Title Date
* Data sheet TPS382x Voltage Monitor With Watchdog Timer datasheet (Rev. N) PDF | HTML 13 Jul 2022
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 Mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 Feb 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 05 Apr 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Test report TIDA-00609 Test Results 25 Jun 2015
User guide Easy Demo User Manual 22 Jun 2015
Test report TIDA-00089 Test Results 13 Dec 2013
User guide Value Soundbar Reference Design Kit Development Guide (Rev. A) 03 Feb 2012
EVM User's guide DRV603EVM - User Guide (Rev. A) 20 Jan 2009
EVM User's guide DRV602EVM2 - User Guide (Rev. A) 17 Jan 2009
Application note Disabling the Watchdog Timer for TI's Family of Supervisors 30 Oct 2003

Design & development

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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, (...)
User guide: PDF
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Supervisor & reset ICs
TPS3825 voltage supervisor (reset IC) with manual reset
Hardware development
Evaluation board
PCM3070RHBEVM-K PCM3070RHBEVM-K Evaluation Module
Support software

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Supported products & hardware

Supported products & hardware

Products
Supervisor & reset ICs
TPS3825 voltage supervisor (reset IC) with manual reset
Support software

TIDCAJ4 TIDA-00609 Software

Supported products & hardware

Supported products & hardware

Products
Supervisor & reset ICs
TPS3825 voltage supervisor (reset IC) with manual reset
Assembly drawing

TIDA-00609 Assembly Drawing

TIDRFK6.PDF (1219 KB)
Bill of materials (BOM)

TIDA-00089 BOM

TIDR315.PDF (138 KB)
Bill of materials (BOM)

TIDA-00609 BOM

TIDRFK5.PDF (125 KB)
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TIDA-00609 CAD Files

TIDRFK8.ZIP (24452 KB)
Gerber file

TIDA-00089 Gerber

TIDC216.ZIP (1286 KB)
Gerber file

TIDA-00609 Gerber

TIDCAJ3.ZIP (7534 KB)
PCB layout

TIDA-00609 PCB

TIDRFK7.PDF (2187 KB)
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TIDA-00089 Schematic

TIDR314.PDF (133 KB)
Schematic

TIDA-00609 Schematic

TIDRFK4.PDF (228 KB)
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Reference designs

TIDA-00609 — Self-Booting Audio System

The purpose of this reference design is to provide hardware and software tools that can be used as reference for audio systems. The new revision of the PurePath™ Console Motherboard (Rev F) adds stand-alone self-booting capabilities to allow making compelling demos with any evaluation module (...)
Test report: PDF
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Reference designs

TIDA-00089 — Value Soundbar Reference Design Kit for Stereo or 2.1 Applications

This is a Value Soundbar reference design kit for Stereo or 2.1 applications, which can easily be reapplied for PC speakers, or MP3 Docks. This is a complete reference design, including all programming hardware required, so you can get to working within minutes, a prototype within hours, and (...)
Test report: PDF
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SOT-23 (DBV) 5 Ultra Librarian

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