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AH3776-P-B Datasheet(PDF) 1 Page - Diodes Incorporated |
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AH3776-P-B Datasheet(HTML) 1 Page - Diodes Incorporated |
1 / 13 page AH3776 Document number: DS38230 Rev. 1 - 2 1 of 13 www.diodes.com September 2015 © Diodes Incorporated AH3776 HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH Description The AH3776 is a high-voltage, medium-sensitivity Hall Effect latch IC designed for commutation of brushless DC motors, flow meters, linear encoders and position sensors in industrial and consumer home appliances and personal care applications. To support a wide range of demanding applications, the design is optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3776 provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has an overcurrent limit and a Zener clamp. The single, open-drain output can be switched on with South pole of sufficient strength and switched off with North pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (BOP) the output is switched on (pulled low). The output is held latched until magnetic flux density reverses and becomes lower than the release point (BRP). Features • Bipolar Latch (South Pole: On, North Pole: off) • 3.0V to 28V Operating Voltage Range • High Sensitivity: BOP and BRP of +110G and -110G Typical • Single, Open-Drain Output with Overcurrent Limit • Chopper Stabilized Design Provides - Superior Temperature Stability - Minimal Switch Point Drift - Enhanced Immunity to Stress • Good RF Noise Immunity • Reverse Blocking Diode and Zener Clamp on Supply • -40 C to +125°C Operating Temperature • ESD (HBM): 6kV • Industry Standard SC59, SOT23 and SIP-3 Packages • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) • Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) 1 VDD GND 2 3 OUTPUT SOT23 (Top View) 1. VDD 2. GND 3. OUTPUT SIP-3 Applications • Brushless DC Motor Commutation • Revolution Per Minute (RPM) Measurement • Flow Meters • Angular and Linear Encoder and Position Sensors • Contact-less Commutation, Speed Measurement and Angular Position Sensing/Indexing in Consumer Home Appliances, Office Equipment and Industrial Applications Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony- free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. |
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