AH1807-P-A

AH1807 MEDIUM SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH Description Pin Assignments The AH1807 is a medium sensitivity micropower Omnipolar Hall TOP View) Effect switch IC. It is designed for battery powered consumer products, home appliances, and industrial equipment such as smart 3 OUTPUT meter magnetic tamper detect. Based on two Hall Effect plates and a chopper stabilized architecture, the AH1807 provides a reliable GND 2 solution over the whole operating range. To support battery and low power applications, the design has been optimized to operate over 1 V DD the supply range of 2.5V to 5.5V and consumes only 24W with a supply of 3V. SC59 The single open drain output can be switched on with either a North (TOP View) or South pole of sufficient strength. When the magnetic flux density 1 5 OUTPUT NC (B) perpendicular to the package is larger than operate point (Bop), the output is switched on (pulled low). The output is turned off when 2 GND B becomes lower than the release point (Brp). The output will remain 3 4 V NC DD off when there is no magnetic field. SOT553 The AH1807 is available in SC59, SOT553 and SIP-3L. (TOP View) Features 3. OUTPUT Omnipolar (North or South pole) Operation 2. GND Medium Sensitivity Single Open Drain Output 1. V DD Micropower Operation SIP-3L 2.5V to 5.5V Operating Range Chopper Stabilized Design Provides: Superior Temperature Stability Applications Minimal Switch Point Drift Enhanced Immunity to Stress Smart E-Meters Good RF Noise immunity Tamper Protection Switch -40C to +125C Operating Temperature Door, Lids and Tray Position Switch High ESD Proximity and Position Switches Small Low Profile SOT553 and Industry Standard SC59 and Level Detects SIP-3L Packages On/Off Switch Digital Contact-Less Switch in Industrial and Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Consumer Products 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) compliant. 2. See Offset Offset Cancellation Cancellation AH1807 Typical Applications Circuit 2.5V to 5.5V V DD R L OUTPUT AH1807 C IN GND Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF. IN R is the pull-up resistor, the recommended resistance is 10k to 100k. L Pin Descriptions Package: SC59 and SIP-3L Pin Pin Function Number Name 1 V Power Supply Input DD 2 GND Ground 3 OUTPUT Output Pin Package: SOT553 Pin Pin Function Number Name 1 NC No Connection (Note 5) 2 GND Ground 3 NC No Connection (Note 5) 4 V Power Supply Input 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 V DD Sleep/Awake Logic and Power Switch Hall Plate Latch Amp OUTPUT Output Driver GND Controller Hall Plate Amp Latch 2 of 13 AH1807 May 2015 Diodes Incorporated www.diodes.com Document number: DS35524 Rev. 5 - 2