The AH9246 is an ultra high sensitivity Hall-effect switch with internal pull-up resistor on the output, designed for battery operated handheld equipments to industrial applications.
A chopper stabilized architecture improves stability of magnetic switch points over the whole operating range. A sleep-awake logic controls the sleep and awake time to reduce the average operating current of the device. During the awake time, the output is changed with the magnetic flux density. During the sleep time, the output is latched in its previous state and the current consumption reduces to 4µA typical at 3V.
The output can be switched on with either north or south pole of sufficient strength. If the magnetic flux density perpendicular to the part marking surface is larger than operating point (BOP), the output will be turned on; if it is less than releasing point (BRP), the output will be turned off.
The AH9246 is available in industry standard TO92S and SC59 packages.
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Doors, Lids, Covers and Tray Position Detect Switches
Liquid Level Detection
Battery Powered Consumer, Home Appliances and Industrial Applications
Omnipolar Operation (Switching with North or South Poles)
Built in Pull-up Resistor on the Output
2.5V to 5.5V Power Supply
Superior Temperature Stability
Digital Output Signal
-40°C to +85°C Operating Temperature
ESD (HBM): 6000V
Small Low Profile Industry Standard SC59 and TO92S Packages