Single Cell Li-ion Battery Charger IC
The XC6802A42XER-G series is a constant current/constant voltage single cell li-ion battery charger IC.
With an external resistor (RSEN) between the ISEN pin and the VSS pin, the charge current can be set anywhere up to a maximum of 800mA. This flexibility makes the XC6802A42XER-G series the ideal choice for a wide variety of battery charge applications.
Operating voltage is between 4.25V ~ 6.0V and current consumption is only 15μA in standby (CE ON) and 10μA in shutdown (CE OFF).
The battery charge termination voltage is internally set to 4.2V ±0.7% and the trickle charge voltage and accuracy is 2.9V ±3%. In a typical application circuit, when the BAT pin voltage rises above 2.9V, the charger enters into constant-current mode (CC mode) and the battery is charged by the programmed current charge. When the BAT pin voltage reaches 4.2V, the charger enters constant-voltage mode (CV mode) automatically. After this, the charge current starts to drop and when it gets down to one tenth of the programmed charge current, the charge terminates. The charge status output pin, /CHG pin, is capable of checking the device’s charging state while connected to an external LED.
Feature
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Operating Voltage Range : 4.25V ~ 6.0V
Charge Current : Externally set up to 800mA (MAX.)
Charge Termination Voltage : 4.2V ±0.7%
Trickle Charge Voltage : 2.9V ±3%
Supply Current (Stand-by) : 15μA (TYP.)
Function : Constant-current/constant-voltage Operation
Thermal Shutdown
Automatic Recharge
Charge Status Output Pin
Soft-start Function (Inrush Limit Current)
Operating Ambient Temperature : -40℃～+85℃
Packages : SOT-89-5, SOT-25, USP-6C, USP-6EL
Environmentally Friendly : EU RoHS Compliant, Pb Free
■ APPLICATIONS
● Charging docks, charging cradles
● MP3 players, portable audio players
● Cellular phones, PDAs
● Bluetooth headsets
