Product
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TPS3808
  • TPS3808
  • TPS3808

TPS3808

ACTIVE

Low-quiescent current supervisor with programmable delay & manual reset

Texas Instruments TPS3808 Product Info

1 April 2026 0

Parameters

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

0.405, 0.84, 1.12, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.07, 4.65, Adjustable

Features

Manual reset capable

Reset threshold accuracy (%)

2

Iq (typ) (mA)

0.0024

Output driver type/reset output

Active-low, Open-drain

Watchdog timer WDI (s)

None

Supply voltage (min) (V)

1.8

Supply voltage (max) (V)

6.5

Operating temperature range (°C)

-40 to 125

Package

SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8

Features

  • Power-on reset generator with adjustable delay time: 1.25 ms to 10 s
  • Very low quiescent current: 2.4 µA typical
  • High threshold accuracy: 0.5% typical
  • Fixed threshold voltages for standard voltage rails from 0.9 V to 5 V and adjustable voltage down to 0.4 V are available
  • Manual reset ( MR) input
  • Open-drain RESET output
  • Temperature range: –40°C to 125°C
  • Small SOT-23 and 2-mm × 2-mm WSON packages
  • Power-on reset generator with adjustable delay time: 1.25 ms to 10 s
  • Very low quiescent current: 2.4 µA typical
  • High threshold accuracy: 0.5% typical
  • Fixed threshold voltages for standard voltage rails from 0.9 V to 5 V and adjustable voltage down to 0.4 V are available
  • Manual reset ( MR) input
  • Open-drain RESET output
  • Temperature range: –40°C to 125°C
  • Small SOT-23 and 2-mm × 2-mm WSON packages

Description

The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset ( MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset ( MR) return above the respective thresholds.

The TPS3808 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and is fully specified over a temperature range of –40°C to 125°C (TJ).

The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset ( MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset ( MR) return above the respective thresholds.

The TPS3808 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and is fully specified over a temperature range of –40°C to 125°C (TJ).

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