Texas Instruments TMAG5131-Q1 Hall-Effect Switch

The device outputs a low voltage (for active-low versions) when the applied magnetic flux density exceeds the operating point (BOP) threshold. The output stays low until the flux density decreases to less than the release point (BRP), at which point the device outputs a high voltage. The output (low/high) behavior is inversed for active high versions. The omnipolar magnetic response allows the device output to be sensitive to the positive and negative magnetic flux through the Z-axis of the package. At the same time, the unipolar version responds only to a positive magnetic flux.

The Texas Instruments TMAG5131-Q1 is internally power-cycled to operate at a very low current consumption. At 3V, the 10Hz version has an average current consumption of 1.25µA. At the same time, the 20Hz versions consume 1.37µA. The TMAG5131-Q1 is available in an industry-standard SOT-23 package and pinout. The device operates at an extended temperature range of –40°C to 125°C and a V_CC range of 1.65V to 5.5V.