LN4912 - Ultra-Sensitive Hall Effect Switch
LN4912 is with two Hall effect plates and a CMOS output driver, mainly designed for battery *powered, hand-held equipment (such as Cellular and Cordless Phone, PDA).
E.g.
as an On/Off switch in Cellular Flip-Phones, with battery operating voltages of 2.4V-5.5V.
Either north or south pole of s