LED Driver Integrates Hall-Effect Switch

The APS13568 LED driver IC features an integrated Hall-effect switch, a micro-power regulator, Hall plate, small-signal amplifier, chopper stabilization, a Schmitt trigger, open drain Hall-Effect switch output, output polarity selection, and an LED driver with soft on/off and short circuit and thermal protection with automatic recovery. The integrated solid-state Hall-effect switch supports silent, sealed, contactless activation and offers a significant upgrade from failure-prone mechanical switches and specifies a standby current of less than 50 μA. The LED driver features an adjustable linear drive up to 150 mA into one or more LEDs. An optional external capacitor programs the turn-on/turn-off rate. It is controlled by the Hall-effect switch and turns on and off in response to a magnet. The Hall-effect switch is omnipolar and highly sensitive (BOP = 40G) to support a wide range of mechanical configurations and enclosures with various air-gaps and degrees of mechanical misalignment. The AP13568 features selectable output polarity as well as an open drain output for connecting to additional external circuitry.


The device is available in two versions: the “K” option is an automotive-grade (AEC-Q100) device that operates from -40 °C to +125 °C; the “E” option is for industrial and consumer applications that operate from -40 °C to 85 °C. Both versions feature a RoHS-compliant, thermally enhanced SOIC-8 surface-mount package (designator “LJ”).  Pricing for the

APS13568KLJATR is $0.93 each/1,000 and the APS13568ELJATR is priced at $0.74 each/1,000. A datasheet is available at http://www.allegromicro.com/en/Products/Magnetic-Digital-Position-Sensor-ICs/Magnetically-Actuated-Lighting/APS13568.aspx


Allegro MicroSystems

Worcester, MA