“We’ve responded to the automotive industry’s demand for more compact motor latch sensors,” it said. “Lateral sensing in a surface-mount TSOT-3L package eliminates the need for through-hole components.”
They are part of the existing MLX92211 family, the rest of which are top-sensitive. The the company brands these end-sensitive parts ‘MLX92211 IMC’ for ‘internal magnetic circuit’.
The actual part numbers begin MLX92211LSE… followed by magnetic designator:
…AF… for ±1.5mT thresholds, 0ppm/°C
…AG… for ±3mT thresholds, 0ppm/°C
…AH… for ±2.2mT thresholds, -1,100ppm/°C
In each case, the devices have a symmetrical hysteresis response: the open-drain output switches ‘on’ (pulling the output low) with end-on south pole exposure above the threshold in the list above (right side of diagram left), after which it stays on until a north pole above the same threshold is applied to initiate turn-off.
The off state lasts until the next sufficiently strong south pole appears, when the cycle repeats.
Operation is over 2.7 to 24V, and the devices are tolerant to brief excursions of +32 and -30V.
Two-wire operation is possible with an external resistor and output current is internally limited.
This current limit, “combined with 8kV ESD [electrostatic discharge] protection, automatic output shut-off with self-recovery, and ASIL A functional safety readiness, the MLX92211 IMC meets the reliability requirements of automotive deployments”, said Melexis.
Design-ins are expected in seat, window, sun roof and door adjusters.
Find end-sensitive MLX92211 parts on the data sheet that dowloads through this Melexis web page
