XC6802A42X4R-G

XC6802 Series ETR25001-011 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, constantcurrent/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. ■ FEATURES ■APPLICATIONS ● Charging docks, charging cradles Operating Voltage Range : 4.25V ~ 6.0V ● MP3 players, portable audio players Charge Current : Externally set up to 800mA (MAX.) ● Cellular phones, PDAs Charge Termination Voltage : 4.2V±0.7% ● Bluetooth headsets 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) ■TYPICAL APPLICATION CIRCUIT ◆CMOS Operating Ambient Temperature : -40℃ ~ 85℃ Packages : SOT-89-5, SOT-25, USP-6C, USP-6EL Environmentally Friendly : EU RoHS Compliant, Pb Free ■TYPICAL PERFORMANCE CHARACTERISTICS ●Battery Charge Cycle Li-ion Liio n Battery Bat t e r yCharge C h ar ge Cycle C yc le ◆Highl VIN=5.0V, CIN=1μF VIN=5.0V, CIN=1uF RSEN=2kΩ, 830mAh Battery RSEN=2kohm, 830mAh Battery 700 4.40 Battery Voltage Battery Voltage VIN : 4.25V ～ 6.0V VIN 500 4.00 400 3.80 Li-ion Battery 300 3.60 ChargeCurrent Current Charge 200 3.40 100 0 0.00 Battery Voltage VBAT(V) RSEN 4.20 Battery Voltage : VBAT (V) VSS Charge Current IBAT (mA) BAT Charge Current : IBAT (mA) 4.2V, 800mA ISEN CIN : 1uF 600 /CHG 3.20 0.25 0.50 0.75 1.00 1.25 1.50 1.75 3.00 2.00 Time (hours) Time (hour) 1/16 XC6802 Series ■PIN CONFIGURATION /CHG BAT 2 5 4 ISEN 5 VIN 4 VIN 6 1 BAT VIN 6 1 BAT NC 5 2 VSS NC 5 2 VSS ISEN 4 1 2 3 ISEN VSS VIN 1 2 3 /CHG VSS BAT SOT-89-5 (TOP VIEW) 3 /CHG USP-6C (BOTTOM VIEW) SOT-25 ( TOP VIEW ) ISEN 4 3 /CHG USP-6EL (BOTTOM VIEW) * The dissipation pad for the USP-6C / USP-6EL 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 PIN NAME FUNCTIONS 3 /CHG Charge Status Output Pin 2 2 VSS Ground SOT-25 SOT-89-5 USP-6C USP-6EL 1 5 3 2 2 3 4 1 1 BAT Charge Current Output Pin 4 3 6 6 VIN Input Voltage Pin 5 1 4 4 ISEN Charge Current Setup Pin - - 5 5 NC No Connection ■FUNCTIONS PIN NAME ISEN CONDITIONS IC OPERATION H Level (1.4V≦VSEN≦VIN) or Open OFF (Shutdown Mode) Pull-down by external components ON, Charge Current IBAT=1000 / RSEN * * For SOT-25, SOT-89-5, and USP-6C, charge current should be set to become IBAT≦800mA. For USP-6EL, charge current should be set to become IBAT≦500mA. ■ PRODUCT CLASSIFICATION ●Ordering Information XC6802A42X①②-③ DESIGNATOR ①②-③ 2/16 (*1) ITEM Packages (Order Unit) SYMBOL DESCRIPTION PR-G SOT-89-5 (1,000pcs/Reel) MR-G SOT-25 (3,000pcs/Reel) ER-G USP-6C (3,000pcs/Reel) 4R-G USP-6EL (3,000pcs/Reel) XC6802 Series ■BLOCK DIAGRAM - VIN Thermal Shutdown CC + UVLO Trickle, SoftStart - BAT + Voltage Reference - ISEN CV + Shutdown Standby 　each circuit Strong Pull-down Weak Pull-down High impedance Shutdown VSS /CHG 　each circuit * Diodes inside the circuits are ESD protection diodes and parasitic diodes. ■ABSOLUTE MAXIMUM RATINGS PARAMETER Ta=25℃ SYMBOL RATINGS UNIT VIN Pin Voltage VIN -0.3 ~ 6.5 V ISEN Pin Voltage VSEN -0.3 ~ VIN + 0.3 or 6.5 (*2) V BAT Pin Voltage VBAT -0.3 ~ 6.5 V /CHG Pin Voltage SOT-89-5 SOT-25 BAT Pin Current (*1) USP-6C V/CHG -0.3 ~ 6.5 V 900 IBAT USP-6EL mA 550 500 (IC only) SOT-89-5 1300 (40mm x 40mm standard board) (*3) 250 (IC only) SOT-25 Power Dissipation Pd USP-6C 600 (40mm x 40mm standard board) (*3) 120 (IC only) mW 1000 (40mm x 40mm standard board) (*3) 120 (IC only) USP-6EL 1000 (40mm x 40mm standard board) (*3) Operating Ambient Temperature Topr -40 ~ 85 ℃ Storage Temperature Tstg -55 ~ 125 ℃ All voltages are described based on the VSS pin. (*1) Please use within the range of IBAT≦Pd/(VIN-VBAT). (*2) The maximum rating corresponds to the lowest value between VIN+0.3V or 6.5V. (*3) This is a reference data taken by using the test board. Please see the power dissipation page for the mounting condition. 3/16 XC6802 Series ■ELECTRICAL CHARACTERISTICS Ta=25℃ PARAMETER SYMBOL Input Voltage Supply Current Stand-by Current VIN ISS ISTBY Shut-down Current ISHUT Float Voltage 1 Float Voltage 2 (*1) VFLOAT1 VFLOAT2 Maximum Battery Current (*2) IBATMAX 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 IBAT1 IBAT2 IBAT3 IBAT4 IBAT5 Trickle Voltage Hysteresis Width UVLO Voltage UVLO Hysteresis Width Manual Shut-down Voltage Manual Shut-down Voltage Hysteresis Width VIN-VBAT Shut-down Release Voltage VIN-VBAT Shut-down Voltage Hysteresis Width C/10 Charge Termination Current Threshold 1 C/10 Charge Termination Current Threshold 2 ISEN Pin Voltage /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 ISEN Pin Pull-up Current Thermal Shut-down Detect Temperature Thermal Shut-down Release Temperature ITRIKL1 ITRIKL2 VTRIKL CONDITIONS MIN 4.25 Charge mode, RSEN=10kΩ Stand-by mode Shut-down mode (RSEN=NC,VIN