XC6801A421MR-G

XC6801 Series 1 Cell Li-ion Battery Linear Charger IC with Constant-Current/Constant-Voltage ETR2502-003a ■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 ± As it is possible to select a highly 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. 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. ■APPLICATIONS ● ● ● ● ● USB charge applications Charging docks, charging cradles MP3 players, portable audio players Cellular phones, PDAs Bluetooth headsets ■ FEATURES Operating Voltage Range Charge Current (externally set) Charge Termination Voltage Trickle Charge Voltage Supply Current (Stand-by) Packages with thermal shutdown Automatic recharge Charge status output pin Soft-start function (Inrush limit current) : 4.25V ~ 6.0V : 100mA (MAX.) @ LIM pin=L 500mA (MAX.) @ LIM pin=H : 4.2V ±0.7% : 2.9V ±3% : 12μA (TYP.) : SOT-89-5, SOT-25, USP-6C Constant-current/constant-voltage operation ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS ●Battery Charge Cycle X C6 8 0 1 A4 2 1 VIN=VLim =5V, CIN=1.0μF 420mAh Battery 1000 900 Charge Current　IBAT (mA) 800 700 600 500 400 300 200 100 0 0 0.3 0.6 0.9 1.2 1.5 Time (hour) Charge Current(Lim:H) Battery Voltage 4.5 4.2 3.9 3.6 3.3 3.0 1/18 Battery Voltage　VBAT (V) XC6801 Series ■PIN CONFIGURATION * The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the VSS (No. 2) pin. ■PIN ASSIGNMENT PIN NUMBER SOT-25 1 2 3 4 5 SOT-89-5 5 2 4 3 1 USP-6C 3 2 1 6 4 5 PIN NAME /CHG VSS BAT VIN LIM NC FUNCTION Charge Status Output Pin Ground Charge Current Pin Input Voltage Pin Changing Current Switch No Connection ■ PRODUCT CLASSIFICATION ●Ordering Information XC6801A42①②③-④(*1) DESIGNATOR ① DESCRIPTION Setting Charge Current Packages Taping Type (*2) SYMBOL 1 PR-G MR-G ER-G DESCRIPTION 1:LIM”L”=95mA, LIM”H”=475mA SOT-89-5 (Halogen & Antimony free) SOT-25 (Halogen & Antimony free) USP-6C (Halogen & Antimony free) ②③-④ (*1) (*2) The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant. The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office or representative. (Standard orientation: ②R-④, Reverse orientation: ②L-④) 2/18 XC6801 Series ■BLOCK DIAGRAM ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ PARAMETER VIN Pin Voltage LIM Pin Voltage BAT Pin Voltage /CHG Pin Voltage BAT Pin Current SOT-25 Power Dissipation SOT-89-5 USP-6C Operating Temperature Range Storage Temperature Range Topr Tstg Pd SYMBOL VIN VLIM VBAT V/CHG IBAT RATINGS VSS – 0.3 ~ + 6.5 VSS – 0.3 ~ + 6.5 VSS – 0.3 ~ + 6.5 VSS – 0.3 ~ + 6.5 900 250 600 （PCB mounted） 500 1300 （PCB mounted）* 120 1000 （PCB mounted）* - 40 ~ + 85 - 55 ~ + 125 ℃ ℃ * UNIT V V V V mA mW * The power dissipation figure shown is PCB mounted. Please refer to page 15 to 17 for details. 3/18 XC6801 Series ■ELECTRICAL CHARACTERISTICS XC6801A421 Ta=25℃ PARAMETER Input Voltage Supply Current Stand-by Current Shut-down Current Float Voltage 1 Float Voltage 2 (*1) Battery Current 1 Battery Current 2 Battery Current 3 Battery Current 4 Battery Current 5 Trickle Charge Current 1 Trickle Charge Current 2 Trickle Voltage Trickle Voltage Hysteresis Width UVLO Voltage UVLO Hysteresis Width VIN-VBAT Shut-down Voltage VIN-VBAT Shut-down Voltage Hysteresis Width C/10 Charge Termination Current Threshold /CHG Pin Weak Pull-Down Current /CHG Pin Strong Pull-Down Current /CHG Pin Output Low Voltage Recharge Battery Threshold Voltage ON Resistance Soft-Start Time Recharge Battery Time Battery Termination Detect Time LIM Pin "H" Level Voltage LIM Pin "L" Level Voltage LIM Pin "H" Level Current LIM Pin "L" Level Current Thermal Shut-Down Detect Temperature Thermal Shut-Down Release Temperature SYMBOL VIN ISS ISTBY ISHUT VFLOAT1 VFLOAT2 IBAT1 IBAT2 IBAT3 IBAT4 IBAT5 ITRIKL1 ITRIKL2 VTRIKL VTRIKL_HYS VUVLO VUVLO_HYS VASD VASD_HYS ITERM I/CHG1 I/CHG2 V/CHG ΔVRECHRG RON tSS tRECHRG tTERM VLIM_H VLIM_L ILIM_H ILIM_L TTSD TTSR O CONDITIONS Charge mode （VLIM=H or VLIM=L） Stand-by mode Shut-down mode (VIN