AH377 and AH378 Hall Effect Latch IC's

By Diodes Incorporated 58

AH377 and AH378 Hall Effect Latch IC's

Diodes' AH377x and AH378x product range is specifically designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors in industrial, consumer, home appliance, and personal care applications. Offering 5 high-tolerance sensitivity band options ranging from a typical 25 to 140 Gauss, and options of open-drain or internal pull-up outputs, the product family can be used in multiple applications. To enhance system reliability, the family is specified over the whole operating range of 3 V to 28 V and -40°C to +125°C. It features VDD and output Zener clamps, current limit, and an ESD rating of 6 kV. Open-drain output for pull-up flexibility or internal pull-up for higher levels of integration. All the products are available in industry-standard SOT23 and SIP-3, and selected products in SC59.

Features and Benefits

  • High performance Hall-effect latch range
    • 5 sensitivity options with high tolerance, tight operating window (less magnetic spread) and low temperature coefficients for switch points
    • Magnetic characteristics specified over the whole operating range
    • Fast “power on” of 10 µs typical and response time of 3.75 µs typical with wide bandwidth
  • Product flexibility
    • Designed for a wide range of applications: 3 V to 28 V and -40°C to +125°C
    • Open-drain output for pull-up flexibility or internal pull-up for higher levels of integration (reduced component count)
    • Industry standard SOT23, SC59, and SIP-3 package options with SC59 providing inverse operating magnetic polarity option
  • Stability, reliability, and robustness
    • Chopper stabilized design to provide minimal switch point drift
    • Superior temperature and supply line stability
    • Input and output clamps with output current limit
    • 32 V reverse voltage protection
    • High ESD (HBM) rating of 6 kV

Applications

  • Flow meters
  • RPM detection
  • Angular and linear encoders and position sensors
  • DC motors/pumps
  • Home and industrial appliances

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