GENERAL DESCRIPTION
A6851 is an integrated Hall effect latched sensor with output pull-high resistor driver designed for electronic commutation of brushless DC motor applications and contactless switches. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and output driver with pull-high resistor. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.

FEATURES
1) Wide range of supply voltage:3.5V to 28V.
2) Internal bandgap regulator allows temperature
    compensated operations and a wide operating
    voltage range.
3) High sensitivity with a small magnet.
4) TTL and MOS ICs directly drivable by output.
5) Build in protection diode for chip reverse power
    connecting.
6) Package: SOT25

APPLICATIONS
1) Brushless DC Motor
2) Brushless DC Fan
3) Position Sensors
4) Rotation Sensors
5) Revolution Counting
6) Speed Measurement
7) Keyboard Switches
8) Microswitches