3.5 µA supply — the battery-life spec that decides the fit
The DRV5032DUDMRR draws a maximum supply current of 3.5 µA. For a battery-powered sensor node that sleeps most of the time and wakes only when a magnetic field crosses the threshold, this quiescent current is the dominant term in the battery-life equation — a 100 mAh coin cell at 3.5 µA continuous drain lasts roughly 2.9 years before the cell's self-discharge becomes the limiting factor. The part is a unipolar Hall-effect switch with a push-pull output, meaning it responds to a single magnetic polarity (north or south, configurable by the field direction) and drives the output rail-to-rail without an external pull-up resistor. The sensing range is ±3.9 mT trip, ±3.5 mT release at 25°C — the hysteresis gap (0.4 mT) prevents output chatter when the field hovers near the threshold.
Supply voltage and temperature — board-fit constraints
The package is a 4-XFDFN with an exposed pad, mapped to the supplier device package 4-X2SON (1.1 mm x 1.4 mm).