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SGM890B - Voltage Detector

General Description

The SGM890B and SGM891B are low-power and high-accuracy voltage detectors.

The adjustable threshold range is 0.8V to 5.0V with increments of 0.1V, which greatly provides application flexibility.

Key Features

  • Operating Voltage Range: 1V to 6V.
  • High Accuracy Detection: ±1% (TYP).
  • Low Power Consumption: 0.3μA (TYP) at VIN = 1V.
  • Detection Voltage Range: 0.8V to 5.0V (0.1V Increments).
  • Detection Voltage Temperature Coefficient: ±40ppm/℃ (TYP).
  • Adjustable Release Delay Time (SGM890B Only).
  • Sense Pin Separates from Power Supply.
  • N-Channel Open-Drain Output.
  • -40℃ to +125℃ Operating Temperature Range.
  • Available in a Green SOT-23-5 Package.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SGM890B/SGM891B Voltage Detector with Separated Sense Pin and Delay Capacitor Pin GENERAL DESCRIPTION The SGM890B and SGM891B are low-power and high-accuracy voltage detectors. The adjustable threshold range is 0.8V to 5.0V with increments of 0.1V, which greatly provides application flexibility. Since the sense pin (VSEN) of the device is separated from the power supply pin, it can monitor other power supplies. And when the monitored power supply voltage drops to 0V, the device can also maintain the detection state. In addition, the CD pin of SGM890B has an external capacitor connected to GND, which can adjust the release delay time. Consequently delay time can be set to more than 1s when the delay capacitor (CD) is 1μF.