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LN4917
Micro Power, Ultra-Sensitive CMOS Hall IC
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).
■ 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
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