XC6801 Datasheet | Torex Semiconductor

DESCRIPTION The XC6801 series is a constant-current/constant-voltage linear charger IC for single cell Lithium-ion and Lithium polymer batteries. The XC6801 includes a reference voltage source, battery voltage monitor, driver transistor, constant-current/constant-voltage charge circuit, overheat protection circuit and phase pensation 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. As it is possible to select a highly accurate charge current of either 100m A (MAX.) for L level input to the LIM pin or 500m A (MAX.) for H level, the series is ideal for applications where the charge is from USB. The series’ charge status output pin, /CHG pin, is capable of checking the IC’s charging state via connection to an external LED. - APPLICATIONS - USB charge 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) : 100m A (MAX.) @ LIM pin=L 500m A (MAX.) @ LIM pin=H Charge Termination Voltage : 4.2V ±0.7% Trickle Charge Voltage : 2.9V ±3% Supply Current (Stand-by) : 12μA (TYP.) Operating Ambient Temperature : - 40℃~ + 85℃ Packages : SOT-89-5, SOT-25, USP-6C Constant-current/constant-voltage operation with thermal shutdown Automatic recharge Charge status output pin Soft-start function (Inrush limit current) Environmentally Friendly : EU Ro HS pliant, Pb Free - TYPICAL APPLICATION CIRCUIT - TYPICAL PERFORMANCE CHARACTERISTICS - Battery Charge Cycle Charge Current　IBAT (m A) Battery Voltage　VBAT (V) 1000 900 800 700 600 500 400 300 200 100 0 0 X C6 8 0 1 A4 2 1 VIN=VLim=5V, CIN=1.0μF 420m Ah Battery Battery Voltage Charge...