Datasheet Summary
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Single Cell Li-Ion Battery Charger with Adjustable Charging Current for Portable Applications
General Description
The RT9527 is a low cost single-cell Li-ion charger for low current charge applications.
The RT9527 can be powered up from an AC adapter or USB (Universal Serial Bus) port inputs. The RT9527 enters sleep mode when VIN power is removed. The RT9527 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...