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 Catalog Watchdog timer WDI (sec) 1.6 Operating temperature range (C) -40 to 85
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 Catalog Watchdog timer WDI (sec) 1.6 Operating temperature range (C) -40 to 85
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • 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
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
Design guide Hybrid RF and PLC Communications Design Guide (Rev. B) PDF | HTML 20 May 2019
Design guide Extending Network Coverage Reliability Standards-Based Protocols Design Guide (Rev. A) PDF | HTML 17 May 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Design guide G3-PLC (CENELEC Band) Data Concentrator Design Guide 28 Dec 2015
Design guide G3-PLC (FCC Band) Data Concentrator Design Guide (Rev. A) 11 Dec 2015
User guide SOMPLC-F28PLC83 System on Module for Power Line Communication User's Guide (Rev. B) 11 Jun 2015
User guide System on Module for Power-Line Communication (CENELEC Freq. Band) Design Guide 19 Mar 2015
User guide System on Module for Power-Line Communication (FCC Frequency Band) Design Guide 10 Mar 2015
User guide System on Module for G3 Power Line Communication (CENELEC) Design Guide (Rev. A) 26 Feb 2015
User guide System on Module for Industrial Power Line Communication (CENELEC) Design Guide 27 Aug 2014
User guide SOMPLC-F28M35 Power Line Communication System on Module Design Guide 18 Mar 2014
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
More literature CAN Quick Start Guide 10 Feb 2004
User guide CAN Software Installation Guide 10 Feb 2004
User guide CAN Software User's Guide 10 Feb 2004

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