NOT RECOMMENDED FOR NEW DESIGN AH1802 USE AH1806 MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH Description Pin Assignments The AH1802 is a high-sensitivity, micropower, omnipolar Hall Effect (Top View) switch integrated circuit (IC) designed for portable and battery-powered (Top View) 6. OUTPUT 5. NC 4. VDD equipment, such as cellular phones, PDAs, and portable PCs. Based on two sensitive Hall Effect plates and a chopper-stabilized architecture, 2 OUTPUT the AH1802 provides a reliable solution over the whole operating range. GND 3 To support portable and battery-powered equipment, the design has 1 V been optimized to operate over the supply range of 2.5V to 5.5V and DD 3. NC 1. NC 2. GND consumes only 24W with a supply of 3V. U-DFN2020-6 SC59 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) (Top View) (Top View) perpendicular to the part marking surface is larger than operate point 3. GND 3. GND (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. 1. V 2. OUTPUT 2. OUTPUT DD 1. VDD U-DFN2020-3 X2-DFN2015-3 Applications Features Open and Close Detect for Flip/Slide Cellular Phones Omnipolar (North or South Pole) Operation Smart Cover or Dock Detect for Cellular Phones and Tablets 2.5V to 5.5V Operating Range Cover or Display Switch in Portable PCs (such as Ultrabook) High Sensitivity Display Switch for Portable PCs Single Open-Drain Output On/Off switch for PDAs and Digital Cameras Micropower Operation Contactless Switch in Consumer Products Chopper-Stabilized Design Provides Superior Temperature Stability Minimal Switch Point Drift Enhanced Immunity to Stress Good RF Noise Immunity -40C to +85C 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 packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See Offset Offset Cancellation Cancellation AH1802 Typical Applications Circuit 2.5~5.5V R L C Output AH1802 GND Pin Descriptions Package: SC59 Pin Number Pin Name Function 1 V Power Supply Input DD 2 OUTPUT Output Pin 3 GND Ground Pin Package: U-DFN2020-3 and X2-DFN2015-3 Pin Number Pin Name Function 1 V Power Supply Input DD 2 OUTPUT Output Pin 3 GND Ground Pin Package: U-DFN2020-6 and X2-DFN2015-3 Pin Number Pin Name Function 1 NC No Connection (Note 4) 2 GND Ground Pin 3 NC No Connection (Note 4) 4 V Power Supply Input DD 5 NC No Connection (Note 4) 6 OUTPUT Output Pin Note: 4. NC is No Connectionrecommendation is to connect the NC pin to ground externally. Functional Block Diagram V DD Sleep/Awake Logic and Power Switch Hall Plate Amp Latch OUTPUT Output Driver GND Controller Hall Plate Amp Latch 2 of 11 AH1802 April 2018 Diodes Incorporated www.diodes.com Document number: DS31170 Rev. 10 - 3