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■ General Description
LN4917 is with proprietary Hall effect plate and dual  CMOS output driver, mainly designed for battery–powered,  hand-held equipment (such as Cellular and Cordless  Phone, PDA). When north-pole of sufficient strength on chip or south-pole of sufficient strength under chip, the  LN4917 will turn on the NOUT output. When south-pole of  sufficient strength on chip or north-pole of sufficient  strength under chip, the LN4917 will turn on the SOUT  output. While the magnetic flux density (B) is larger than  operate point BOP(s), the SOUT will be turned on (low), the output is held until B is lower than release point BRP(s), then turned off (high). While the magnetic flux density (B) is larger than  operate point BOP (n), the NOUT will be turned on (low),  the output is held until B is lower than release point BRP (n), then turned off (high).
■ Application  
? Mobile phones and Portable electronic devices
? Notebook
■ Features  
? 1.8V to 4.5V battery operation
? Operation with North or South Pole
? Chopper stabilized
? Superior temperature stability
? Extremely Low Switch-Point Drift
? Insensitive to Physical Stress
? Good RF noise immunity
? ESD HBM bigger than 4kV
? Lead Free Finish/RoHS Compliant