AH1902-FA-7

AH1902 HIGH SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH Description Pin Assignments The AH1902 is a high-sensitivity micropower Omnipolar Hall effect switch IC with internal pull up and pull down capability. Designed for ( Top View ) portable and battery powered consumer equipment such as cellular ( Top View ) 1 6 VDD OUTPUT phones and portable PCs to office equipment, home appliances and OUTPUT 1 4 V DD 2 5 NC industrial applications, the average supply current is only 4.3A at NC 1.8V. To support potable equipment the AH1902 can operate over the 2 3 GND NC 3 4 GND NC supply range of 1.6V to 3.6V and uses a hibernating clocking system X2-DFN2015-6 X1-DFN1216-4 to minimize the power consumption. To minimize PCB space, the AH1902 is available in small low profile X1-DFN1216-4, ( Top View ) X2-DFN2015-6 and SOT553 packages. NC 1 5 OUTPUT GND 2 The output is activated with either a north or south pole of sufficient magnetic field strength. When the magnetic flux density (B) NC 3 4 V DD perpendicular to the package is larger than operate point (Bop), the SOT553 output will be turned on (pulled low) and held until B is lower than release point (Brp). Applications Features Open and Close Detect for Flip/Slide Cellular Phones Omnipolar Operation (North or South Pole) Smart Cover or Dock Detect for Cellular Phones and Tablet PCs Supply Voltage of 1.6V to 3.6V Cover or Display Switch in Portable PCs (eg: Ultrabook) High Sensitivity Digital Still, Video Cameras and Handheld Gaming Consoles Micropower Operation Door, Lids and Tray Position Switches Chopper Stabilized Design Provides: Level, Proximity and Position Switches - Superior Temperature Stability Contact-Less Switches in Home Appliances and Industrial - Minimal Switch Point Drift Applications - Enhanced Immunity to Physical Stress No External Pull-up Resistors Required Good RF Noise Immunity -40C to +85C Operating Temperature High ESD capability of 8kV (Human Body Model) Small Low Profile X1-DFN1216-4, X2-DFN2015-6 and SOT553 Packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3 ) Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 2. See Offset Cancellation AH1902 Pin Descriptions Package: X1-DFN1216-4 Pin Number Pin Name Function 1 OUTPUT Output Pin 2 GND Ground Pin 3 NC No Connection (Note 5) 4 Power Supply Input V DD The center exposed pad No connection internally. Pad Pad The exposed pad can be left open (unconnected to ) on the PCB layout. Package: X2-DFN2015-6 Pin Number Pin Name Function 1 OUTPUT Output Pin 2 NC No Connection (Note 5) 3 NC No Connection (Note 5) 4 GND Ground Pin 5 NC No Connection (Note 5) 6 Power Supply Input VDD The center exposed pad No connection internally. Pad Pad The exposed pad can be left open (unconnected to) on the PCB layout. Package: SOT553 Pin Number Pin Name Function 1 NC No Connection (Note 5) 2 GND Ground Pin 3 NC No Connection (Note 5) 4 V Power Supply Input DD 5 OUTPUT Output Pin Note: 5. NC is No Connection pin and is not connected internally. This pin c baen left open or tied to ground. Functional Block Diagram V DD Sleep/Awake Logic and Power Switch Hall Latch Plate and Amp Output OUTPUT Driver Controller GND 2 of 11 AH1902 April 2016 Diodes Incorporated www.diodes.com Document number: DS36533 Rev. 4 - 2 NEW PRODUCT