Small size low voltage Hall effect latch
The DRV5011 device from Texas Instruments is a digital-latch Hall effect sensor designed for motors and other rotary systems. The device has an efficient low-voltage architecture that operates from 2.5 to 5.5V. The device is offered in standard SOT-23, and low-profile X2SON and DSBGA packages. The output is a push-pull driver that requires no pullup resistor, enabling more compact systems.
When a south magnetic pole is near the top of the package and the BOP threshold is exceeded, the device drives a low voltage. The output stays low until a north pole is applied and the BRP threshold is crossed, which causes the output to drive a high voltage.
Alternating north and south poles are required to toggle the output, and integrated hysteresis separates BOP and BRP to provide robust switching.
The device produces consistent performance across a wide ambient temperature range of -40 to +135°C.
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