The Texas Instruments TMAG5124E1CEDBZRQ1 is a 2-wire Hall-effect unipolar switch in the TMAG5124 family, packaged for surface-mount assembly. It operates from a 2.7 V supply rail and switches a current-source output — the 18 mA switching current and 7.8 mA max output current define the load the downstream circuit sees when the field is present or absent. The magnetic thresholds are 5 mT for the trip point and 1 mT for release, with south-pole sensitivity — the output latches low when the south field exceeds 5 mT and releases above 1 mT.
Temperature grade and deployment context
The 2-wire current-source output simplifies wiring in a sealed harness: the sensor draws a low current when the field is below the release threshold and a higher current when the field exceeds the trip point, so a single twisted pair carries both power and signal.