PART OBSOLETE USE AH1808 AH180 MICROPOWER OMNIPOLOAR HALL-EFFECT SENSOR SWITCH Description Pin Assignments AH180 is a micro-power Omnipolar Hall-Effect switch designed for (Top View) portable and battery powered equipment such cellular phones, PDAs and portable PCs. Based on two Hall-Effect plates and a chopper 3. Output stabilized architecture the AH180 provides a reliable solution over the 2. GND whole operating range. To support portable and battery powered equipment the design has been optimized to operate over the supply 1. Vdd range of 2.5V to 5.5V and consumes only 24uW with a supply of 3V. (SIP-3L) The single open-drain output switches on with either a north or south (Top View) pole of sufficient strength. 3. Output When the magnetic flux density (B) is larger than operate point GND 2. (Bop), output is switched on (Output pin is pulled low). The output is 1 . Vdd turned off when B becomes lower than the release point (Brp). The SC59 output will remain off when there is no magnetic field. ( Top View ) (Top View) The AH180 is available in SIP-3L, SC59, DFN2020-3, and DFN2020- 5. GND 6. NC 4. NC 3. GND 6 packages. Features Omnipolar (north or south pole) operation Micropower operation Single open drain output 2.5V to 5.5V operating voltage 1. Vdd 2. NC 3. Output 1. Vdd 3. Output DFN2020-6 DFN2020-3 Chopper stabilized design provides Superior temperature stability Minimal switch-point drift Applications Enhanced immunity to stress Good RF noise immunity Cover Switch in Clam-Shell Cellular Phones -40C to +85C operating temperature Cover Switch in Notebook PC/PDA ESD (HBM) 5KV for DFN2020-6, DFN2020-3 Contactless Switch in Consumer Products 6KV for SIP-3L and SC59 SIP-3L, SC59 (commonly known as SOT23 in Asia) DFN2020-6, DFN2020-3 packages Green Molding Compound (No Br, Sb) (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 1 of 12 February 2019 AH180 www.diodes.com Diodes Incorporated Document number: DS31023 Rev. 19 - 4 OBSOLETE PART DISCONTINUED Offset Offset Cancelling Cancelling AH180 Typical Application Circuit 2.5~5.5V R L C Output AH180 Gnd Note: C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF. R is the pull-up resistor, the recommended resistance is 10Kohm~100Kohm. L Pin Descriptions Pin Name P/I/O Description Vdd P/I Power Supply Input GND P/I Ground Output O Output Pin NC NC No Connected Functional Block Diagram Vdd Power switch Hall Plate Latch Amp Output Logical GND Hall Plate Amp Latch 2 of 12 February 2019 AH180 www.diodes.com Diodes Incorporated Document number: DS31023 Rev. 19 - 4 OBSOLETE PART DISCONTINUED