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AH375-PG-A Datasheet(PDF) 1 Page - Diodes Incorporated |
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AH375-PG-A Datasheet(HTML) 1 Page - Diodes Incorporated |
1 / 9 page AH375 SINGLE PHASE HALL EFFECT LATCH AH375 Document number: DS31172 Rev. 6 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated Description AH375 is an integrated Hall-Effect latched sensor designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open drain output. An internal band-gap regulator provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply 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 reversal falls below Brp. When B is less than Brp, the output is switched off. The AH375 is available in SIP-3L and SC59 packages. Features • Bipolar Hall-Effect latch sensor • 2.2V to 20V 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 • Brush-Less DC Motor • Brush-Less DC Fan • Revolution Counting • Speed Measurement 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 AH375 Output GND L R C 2 3 1 Vdd |
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