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LN4919

MicroPower , Ultra-Sensitive CMOS Hall IC
LN4919 is with proprietary Hall effect plate and single 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 LN4919 will turn on the OUT output. When south-pole of sufficient strength on chip or north-pole of sufficient strength under chip, the LN4919 will turn on the OUT output. LN4919 series have above two kinds Hall effect output, please select appropriate model for different application. While the magnetic flux density (B) is larger than operate point BOP, the OUT will be turned on (low), the output is held until B is lower than release point BRP, then turned off (high).

General Description
LN4919 is with proprietary Hall effect plate and single  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 LN4919 will turn on  the OUT output. When south-pole of sufficient strength on  chip or north-pole of sufficient strength under chip, the  LN4919 will turn on the OUT output. LN4919 series have above two kinds Hall effect output,  please select appropriate model for different application. While the magnetic flux density (B) is larger than operate  point BOP, the OUT will be turned on (low), the output is  held until B is lower than release point BRP, then turned off  (high).
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
Application
Mobile phones and Portable electronic devices
Notebook

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