The RT9527A is a low cost single-cell Li-ion charger for
low current charge applications.
The RT9527A can be powered up from an AC adapter or
USB (Universal Serial Bus) port inputs. The RT9527A
enters sleep mode when VIN power is removed. The
RT9527A optimizes the charging task by using a control
algorithm, which includes pre-charge mode, fast-charge
mode and constant voltage mode. The charging task is
kept in constant voltage mode to hold the battery in a full
charge condition. The charge current is adjustable via an
external resistor. The internal thermal feedback circuitry
regulates the die temperature to optimize the charge rate
for all ambient temperatures. The RT9527A features 28V
maximum rating voltage for VIN. Other features include
under-voltage protection and over-voltage protection for the
AC adapter supply.资料下载
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