800mA 1 Cell Li-ion and Li-Po Battery Linear Charger IC with Constant-Current/Constant-Voltage
GENERAL DESCRIPTION The XC6802 series is a constant-current/constant-voltage linear charger IC for single cell Lithium-ion and Lithium polymer batteries.The XC6802 includes a reference voltage source, battery voltage monitor, driver transistor, constant-current/constant-voltage charge circuit, overheat protection circuit and phase compensation circuit. 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 trickle charge mode, a safe Lithium-ion and Lithium polymer battery charge is possible because approximately only 1/10 of the full charge current is supplied to the battery. With an external RSEN resistor, the charge current can be set freely up to 800mA (MAX.), therefore, the series is ideal for various battery charge applications.The series’ charge status output pin, /CHG pin, is capable of checking the IC’s charging state while connecting with an external LED. ■APPLICATIONS ● Charging docks, charging cradles ● MP3 players, portable audio players ● Cellular phones, PDAs ● Bluetooth headsets ■ FEATURES 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
