The UGQ5140K unipolar Hall effect switch is a monolithic integrated circuit designed for magnetic actuation of low-power incandescent lamps or inductive loads such as relays or solenoids. Included on chip is a Darlington power output that is capable of continuously sinking in excess of 300 mA. Internal protection circuitry limits surge (lamp turn-ON) or fault currents to approximately 900 mA. A sensitive magnetic threshold allows the device to be used in conjunction with inexpensive magnets or in applications that require relatively large operating distances.

FEATURES
■ Magnetically Actuated Power Switch
■ Temperature-Compensated Switch Points
■ High Current-Sink Capability
    300 mA Continuous
    900 mA Peak Current Limit
■ Output Short-Circuit Protection
■ Low Quiescent Standby Current
■ Linear Thermal Limiting
■ Automotive Temperature Range -40°C to +85°C, Operating
■ Internal Inductive Flyback/Clamp Diode Protection
■ Reverse Battery Protection
■ Low-Profile 4-Pin Mini-SIP