AH3774

AH3774 HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH Description The AH3774 is a high-voltage, high-sensitivity Hall Effect Latch IC designed for commutation of brushless DC motor, flow meters, linear encoders and position sensors in industrial and consumer home appliance and personal care applications. To support a wide range of demanding applications, the design is optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3774 provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has an over current limit and a Zener clamp. Pin Assignments (Top View) GND 2 3 OUTPUT 1 VDD SC59 and SOT23 The single open-drain output can be switched on with South Pole of sufficient strength and switched off with North Pole of suffici...