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General Description
-------------------------
The MAX1772 is a highly-integrated, multichemistry
battery-charger control IC that simplifies the construction
of accurate and efficient chargers. The MAX1772
uses analog inputs to control charge current and voltage
and can be programmed by the host or hardwired.
High efficiency is achieved by a buck topology with
synchronous rectification.
Maximum current drawn from the AC adapter is programmable
to avoid overloading the AC adapter when
supplying the load and the battery charger simultaneously.
This enables the user to reduce the cost of the
AC adapter. The MAX1772 provides outputs that can
be used to monitor the current drawn from the AC
adapter, battery-charging current, and the presence of
an AC adapter.
The MAX1772 can charge two to four lithium-ion (Li+)
series cells, easily providing 4A. When charging, the
MAX1772 automatically transitions from regulating current
to regulating voltage. It is available in a space-saving
28-pin QSOP package.
================
Applications
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Notebook and Subnotebook Computers
Personal Digital Assistants
Hand-Held Terminals
[ 本帖最后由 at306 于 2006-5-18 07:08 編輯 ] |
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