AH1809-P-B Diodes Incorporated

AH1809 LOW SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH Description Pin Assignments The AH1809 is a low sensitivity micropower Omnipolar Hall Effect switch IC. It is designed for battery powered consumer products, TOP View) home appliances, and industrial equipment such smart e-meters. 3 OUTPUT Based on two Hall Effect plates and a chopper stabilized architecture the AH1809 provides a reliable solution over the whole operating GND 2 range. To support battery and low power applications the design has been optimized to operate over the supply range of 2.5V to 5.5V and 1 V DD consumes only 24W with a supply of 3V. 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 perpendicular to the package (B) is larger than operate point (Bop), (TOP View) the output is switched on (pulled low). The output is turned off when B becomes lower than the release point (Brp). The output will remain off when there is no magnetic field. The AH1809 is available in SC59, SOT553 and SIP-3L. SOT553 Features Omnipolar (North or South pole) Operation (TOP View) Low Sensitivity Single Open Drain Output Micropower Operation 2.5V to 5.5V Operating Range Chopper Stabilized Design Provides Superior Temperature Stability SIP-3L Minimal Switch Point Drift Enhanced Immunity to Stress Applications Good RF Noise Immunity -40C to +125C Operating Temperature Smart E-Meters High ESD Tamper Protection Switch Small Low Profile SOT553 and Industry Standard SC59 and Door, Lids and Tray Position Switch SIP-3L Packages Proximity and Position Switches Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Level Detects Halogen and Antimony Free. Green Device (Note 3) On/Off Switch Digital Contact-Less Switch in Industrial and Consumer Products Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AH1809 Typical Applications Circuit Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF. IN R is the pull-up resistor, the recommended resistance is 10k to 100k. L Pin Descriptions Package: SC59 and SIP-3L Pin Number Pin Name Function 1 V Power Supply Input DD 2 GND Ground 3 OUTPUT Output Pin Package: SOT553 Pin Number Pin Name Function 1 NC No Connection (Note 5) 2 GND Ground 3 NC No Connection (Note 5) 4 Power Supply Input V DD 5 OUTPUT Output Note: 5. NC is No Connection pin and is not connected internally. This pin can be left open or tied to ground. Functional Block Diagram 2 of 13 February 2015 AH1809 Diodes Incorporated www.diodes.com Document number: DS35523 Rev. 4 - 2