3.5 µA supply current — the battery-life decider
The DRV5032AJDBZT draws a maximum of 3.5 µA from the supply rail. For a device that sits in a sensor node or portable enclosure, this current is the dominant term in the sleep-state power budget — the Hall plate and the comparator stay biased, but the draw is low enough that a 200 mAh coin cell runs the sensor continuously for over six years before the chemistry self-discharge becomes the limit. The 1.65 V minimum supply lets the part operate from a single alkaline cell near end-of-life or from a 1.8 V regulated rail common in low-power MCU designs.
Omnipolar detection with defined hysteresis
The DRV5032AJDBZT responds to both north and south poles with a typical operate point of ±9.5 mT and a release point of ±3 mT. The 6.5 mT hysteresis band prevents output chatter when the magnetic field hovers near the threshold — a common failure in reed-switch replacements where the magnet-to-sensor gap varies with vibration or temperature. Because the switch is omnipolar, the output goes active when either pole exceeds the operate point. This simplifies the mechanical alignment in a proximity or lid-closure application — the magnet polarity does not need to be tracked during assembly.
Sleep mode and output architecture
The part includes a sleep mode that duty-cycles the Hall plate to achieve the 3.5 µA average. The output is configurable as open-drain or push-pull — open-drain suits wired-OR bus topologies or level translation to a higher-voltage MCU input; push-pull eliminates the external pull-up resistor and saves a component on the BOM. The SOT-23-3 package occupies roughly 3 mm × 3 mm on the PCB. The three pins — supply, ground, and output — route easily on a two-layer board.
Active lifecycle — design-in ready
The base product number DRV5032 covers multiple sensitivity and output variants in the same SOT-23-3 footprint, giving a parametric upgrade path without a board spin.