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TPS3890
  • TPS3890
  • TPS3890

TPS3890

ACTIVE

Low-quiescent current 1% accuracy supervisor with programmable delay

Texas Instruments TPS3890 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

1.15, 1.44, 1.73, 1.9, 2.4, 2.89, 3.17, adjustable

Features

Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only

Reset threshold accuracy (%)

1

Iq (typ) (mA)

0.002

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

0.008, 0.018, 0.025

Watchdog timer WDI (s)

None

Supply voltage (min) (V)

1.5

Supply voltage (max) (V)

5.5

Operating temperature range (°C)

-40 to 125

Package

WSON (DSE)-6-2.25 mm² 1.5 x 1.5

Features

  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 µs to 30 s
  • Very Low Quiescent Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 3.3 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 µs to 30 s
  • Very Low Quiescent Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 3.3 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON

Description

The TPS3890 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 TPS3890 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).

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