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Low-Quiescent-Current 1% Accurate Supervisor With Programmable Delay


Package | PIN: DSE | 6
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $1.30
10-24 $1.17
25-99 $1.08
100-249 $0.94
250-499 $0.87
500-749 $0.73
750-999 $0.60
1000+ $0.55


  • 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

Texas Instruments  TPS389030DSER

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).