As described elsewhere
in this issue,
lithium-ion batteries are
among the newest on
the market. Because of
their low weight, however,
they are particularly
suitable for use in
small portable computers
and mobile telephones.
Owing to
some of their properties,
these batteries
are, however, not compatible
with currentgeneration
chargers for
NiCd and NiMH batteries.
Several special ICS
are already on the
market.. In this article,
the Type LM3420-xxx
charging controller
from National Sem iconductor
is described.
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