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TPS3824
  • TPS3824
  • TPS3824

TPS3824

ACTIVE

Active-high & active-low, voltage supervisor (reset IC) with watchdog & manual reset

Texas Instruments TPS3824 Product Info

1 April 2026 3

Parameters

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

2.25, 2.63, 2.64, 2.93, 4.55

Features

Complimentary output, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer

Reset threshold accuracy (%)

2, 2.2, 2.3, 2.4

Iq (typ) (mA)

0.015

Output driver type/reset output

Active-high, Active-low, Push-Pull

Time delay (ms)

200

Watchdog timer WDI (s)

1.6

Supply voltage (min) (V)

1.1

Supply voltage (max) (V)

5.5

Operating temperature range (°C)

-40 to 85

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

Features

  • Power-on reset generator with a fixed delay time of 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (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: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15µA (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 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (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: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15µA (typical)
  • 5-pin SOT-23 package
  • Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)

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 1.1V. 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 make sure 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 200ms (TPS3820) and 1.6s (TPS3823, TPS3824, and TPS3828).

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