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型號(hào)： XC6801A421MR-G

品牌： 特瑞仕

類別： 集成電路

描述： ■GENERAL DESCRIPTION The XC6801 series is a constant-current/constant-voltage linear charger IC for single cell lithium-ion batteries. The XC6801 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 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 100mA (MAX.) for L level input to the LIM pin or 500mA (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. ■ FEATURES Operating Voltage Range : 4.25V ~ 6.0V Charge Current (externally set)???? : 100mA (MAX.) @ LIM pin=L ????????????????????????????????????????????????????? 500mA (MAX.) @ LIM pin=H Charge Termination Voltage : 4.2V ±0.7% Trickle Charge Voltage : 2.9V ±3% Supply Current (Stand-by) : 12μA (TYP.) 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) ■APPLICATIONS ● USB charge applications ● Charging docks, charging cradles ● MP3 players, portable audio players ● Cellular phones, PDAs ● Bluetooth headsets

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