ET3725B30

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ET3725B30 General Description

The ET3725B30 is a high sensitivity and high-accuracy Omnipolar Hall effect switch IC that operates at an ultra-low voltage and low current consumption. ET3725B30 has two CMOS output terminal for N and S pole. The output voltage will be pulled low when this IC detects the magnetic flux density is larger than operate point(BOPN/BOPS) and the output voltage will recover to high until the magnetic flux density is smaller than the release point(BRPN/BRPS). Using this IC with a magnet makes it possible to detect the open / close status in various applications.

To achieve a high-density mounting the ET3725B30 uses a super-small DFN4 package.The ET3725B30 is suitable for battery powered portable devices such as mobile phones and portable PCs etc. due to its low voltage operation and low current consumption, the average current consumption is only typ. 2.0μA with a 1.2V supply.

ET3725B30 Key Features

  • Pole detection:Omnipolar pole
  • Output logic:Dual active low output for N/S-pole
  • Output form:CMOS output, no external pull-up resistor required
  • Operating Point:BOP = 3.0 mT typ.
  • Operating cycle:tCYCLE = 50 ms typ.
  • Current consumption:IDD = typ. 2.0 μA at 1.2 V
  • Power supply voltage range:VDD = 1.0 V to 3.5 V
  • Operation temperature range:TA = -40°C to +85°C
  • Lead-free (Sn 100%), halogen-free
  • Package: DFN4(1.0mm×1.0mm)

ET3725B30 Technical Documentation

Type Title Format Date
Datasheet ET3725B30 PDF 2026-07-16

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