AH3782 HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH WITH INTERNAL PULL-UP RESISTOR
■The AH3782 is a high-voltage, high-sensitivity Hall Effect latch IC with internal pull-up resistor 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 has been 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 AH3782 provides a reliable solution over the whole operating range. For robustness and protection, the device has a Zener clamp on the supply. The output has an overcurrent limit and a Zener clamp.
■The internally pulled-up 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 part marking surface is larger than the operate point (B-OP) the output is switched on (pulled low). The output is held latched until magnetic flux density reverses and becomes lower than the release point (B-RP).
■The magnetic operating and release polarity is opposite for SOT23 and SC59 packages. SOT23 and SIP-3 packages will require South pole to the part marking side to operate while SC59 will require North pole to the part marking side.
●Features
■Bipolar Latch Operation (South Pole: On, North Pole: off)
■3.0V to 28V Operating Voltage Range
■High Sensitivity: B-OP and B-RP of +40G and -40G Typical
■Internally Pull-up Resistor on the Output Pin
■Output Overcurrent Limit
■Chopper Stabilized Design Provides
▲Superior Temperature Stability
▲Minimal Switch Point Drift
▲Enhanced Immunity to Stress
■Good RF Noise Immunity
■Zener Clamp on Supply and Output Pins
■-40°C to +125°C Operating Temperature
■ESD (HBM): 6kV
■Industry Standard SC59, SOT23 and SIP-3 Packages
■Totally Lead-Free & Fully RoHS Compliant
■Halogen and Antimony Free. "Green"
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AH3782-XXX-X 、 AH3782-P-A 、 AH3782-P-B 、 AH3782-SA-7 、 AH3782-W-7 、 AH3782 |
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[ Brushless DC-Motor Commutation ][ Revolution Per Minute (RPM) Measurement ][ Flow Meters ][ Angular and Linear Encoder and Position Sensors ][ Contactless Commutation ][ Speed Measurement ][ Angular Position Sensing/Indexing ][ Consumer Home Appliances ][ Office Equipment ][ Industrial Application ] |
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Datasheet |
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Please see the document for details |
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SOT23;SIP-3;SC59 |
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English Chinese Chinese and English Japanese |
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September 2015 |
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Rev. 1 - 2 |
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DS38083 |
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513 KB |
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