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AH337-WG-7 Datasheet(PDF) 1 Page - Diodes Incorporated |
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AH337-WG-7 Datasheet(HTML) 1 Page - Diodes Incorporated |
1 / 9 page AH337 SINGLE PHASE HALL EFFECT SWITCH AH337 Document number: DS31050 Rev. 9 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated Description AH337 is an unipolar Hall-Effect sensor for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. The band-gap regulator allows a wide operating voltage range. When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (OUT pin is pulled low). The output state is held on until a magnetic flux density falls below Brp. When B is less than Brp, the output is switched off. The AH337 is available in SIP-3L and SC59 packages. Features • Unipolar Hall-Effect sensor • 4.2V to 28V DC operating voltage • Temperature compensation • Open drain pre-driver • 25mA maximum output sink current • Operating temperature: -40 °C to +125°C • SIP-3L and SC59 packages (SC59 is commonly known as SOT23 in Asia) • Green Molding Compound (No Br, Sb) (Note 1) Pin Assignments (Top View) 1. Vdd 2. GND 3. OUT SIP-3L 1. Vdd GND 2. 3. OUT (Top View) SC59 Applications • VCD/DVD Loader, CD/DVD ROM • Cover Detector • Speed Measurement • Home Appliances • Home Safety Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. Typical Application Circuit AH337 4.2V ~ 28 V Output Vdd GND L R |
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