UGQ5140K Datasheet PDF - Allegro MicroSystems

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