DIODES AH1802-WG-7

The AH1802 is a high- sensitivity, micropower, omnipolar Hall Effect switch integrated circuit (IC) designed for portable and battery- powered equipment, such as cellular phones, PDAs, and portable PCs. Based on two sensitive Hall Effect plates and a chopper- stabilized architecture, the AH1802 provides a reliable solution over the whole operating range. To support portable and battery- powered equipment, the design has been optimized to operate over the supply range of 2.5V to 5.5V and consumes only 2 - 4w with a supply of 3V. The single open- drain output can be switched on with either a north or south pole of sufficient strength. When the magnetic flux density (B) perpendicular to the part marking surface is larger than operate point (Bop), the output is switched on (pulled low). The output is turned off when B becomes lower than the release point (Brp). The output remains off when there is no magnetic field.

• Omnipolar (North or South Pole) Operation
• 2.5V to 5.5V Operating Range
• High Sensitivity
• Single Open-Drain Output
• Micropower Operation
• Chopper-Stabilized Design Provides
• Superior Temperature Stability
• Minimal Switch Point Drift
• Enhanced Immunity to Stress
• Good RF Noise Immunity
• -40℃ to +85℃ Operating Temperature
• ESD >5kV for U-DFN2020-6, U-DFN2020-3 and X2-DFN2015-3
• ESD >6kV for SC59
• Low Profile SC59, U-DFN2020-6, U-DFN2020-3 and X2-DFN2015-3 package
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. "Green" Device

• Open and Close Detect for Flip/Slide Cellular Phones
• Smart Cover or Dock Detect for Cellular Phones and Tablets
• Cover or Display Switch in Portable PCs (such as Ultrabook)
• Display Switch for Portable PCs
• On/Off switch for PDAs and Digital Cameras
• Contactless Switch in Consumer Products