Automotive 2-wire high-voltage (up to 38 V), high-precision switch

The TMAG5124 -Q1 device is a high-precision Hall effect sensor that

offers a 2-wire interface designed for automotive designs.

The TMAG5124 -Q1 integrates a current source that switches between

two levels depending on the value of the magnetic field applied to the part. While the high

value is fixed, the low value can be selected from two ranges. This type of interface

enables robust communication between sensor and controller, allow long distance

transmissions, helps detect disconnections, and limits the number of wires to two.

The device is available in a 3-pin SOT-23 package.

While 3 pins are available on the package, the device only requires the VCC and GND pin to

operate. The current can be measured from either of those 2 pins, creating either a

high-side or low-side configuration.

Different product

variants enable selection of different levels of magnetic sensitivity to match application

specific requirements.

The wide

operating voltage range and reverse polarity protection of the TMAG5124 -Q1 is designed for a variety of automotive applications.