The KH3206 is a medium-sensitivity Unipolar Hall-effect switch with digital latched output, special designed for automotive, industrial and consumer applications.
                                                                  
The KH3206 combined with a voltage regulator, Hall voltage generator, small-signal amplifier, Schmitt trigger and open-drain output. The integrated voltage regulator permits operation from 3.8V to 30V and extended choice of temperature range. If the magnetic flux density is larger than operating point (B_OP), the output will be turned on; if it is less than releasing point (B_RP), the output will be turned off.
 
The KH3206 is available in TO-92S-3 and SOT-23-3 packages which are optimized for most applications.