XC6802A42XER

XC6802 Series 1 Cell Li-ion Battery Linear Charger IC with Constant-Current/Constant-Voltage ETR2501-005b ■GENERAL DESCRIPTION The XC6802 series is a constant-current/constant-voltage linear charger IC for single cell lithium-ion batteries. The XC6802 includes a reference voltage source, battery voltage monitor, driver transistor, constant-current/constant-voltage charge circuit, over heat protection circuit, 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 charge to a battery is possible because approximately 1/10 out of setting 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 Charge Current : 4.25V ~ 6.0V : Externally set up to 800mA (MAX.) Charge Termination Voltage : 4.2V ±0.7% Trickle Charge Voltage Supply Current (Stand-by) Packages with thermal shutdown Automatic recharge Charge status output pin Soft-start function (Inrush limit current) : 2.9V ±3% : 15μA (TYP.) : SOT-89-5, SOT-25, USP-6C Constant-current/constant-voltage operation ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS ●Battery Charge Cycle LLi-ion BatteryyCharge Cycle i- io n Bat t e r C h ar ge C yc le VIN=5.0V, CIN=1μF VIN=5.0V, CIN=1uF RSEN=2kΩ, 830mAh Battery RSEN=2kohm, 8 30mAh Battery Battery Voltage Battery Voltage 600 4.20 700 4.40 Charge Current IBAT (mA) Charge Current : IBAT (mA) 400 3.80 300 3.60 200 Charge Current Charge Current 3.40 100 3.20 0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 3.00 2.00 Time (hours) Time (hour) 1/18 Battery Voltage : VBAT (V) 500 4.00 Battery Voltage VBAT(V) XC6802 Series ■PIN CONFIGURATION SOT-89-5 (TOP VIEW) SOT-25 (TOP VIEW) USP-6C (BOTTOM VIEW) * 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 ISEN NC FUNCTION Charge Status Output Pin Ground Charge Current Output Pin Input Voltage Pin Charge Current Setup Pin No Connection ■ PRODUCT CLASSIFICATION ●Ordering Information XC6802A42X①②-③(*1) DESIGNATOR DESCRIPTION SYMBOL PR PR-G ①②-③ Packages Taping Type * MR MR-G ER ER-G (*1) (*2) DESCRIPTION SOT-89-5 SOT-89-5 (Halogen & Antimony free) SOT-25 SOT-25 (Halogen & Antimony free) USP-6C USP-6C (Halogen & Antimony free) 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: ①R-③, Reverse orientation: ①L-③) 2/18 XC6802 Series ■BLOCK DIAGRAM ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ PARAMETER VIN Pin Voltage ISEN Pin Voltage BAT Pin Voltage /CHG Pin Voltage BAT Pin Current SOT-89-5 Power Dissipation SOT-25 USP-6C Operating Temperature Range Storage Temperature Range Topr Tstg Pd SYMBOL VIN VSEN VBAT V/CHG IBAT RATINGS VSS – 0.3 ~ + 6.5 VSS – 0.3 ~ VIN + 0.3 VSS – 0.3 ~ + 6.5 VSS – 0.3 ~ + 6.5 900 500 1300 （PCB mounted）* 250 600 （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 XC6802 Series ■ELECTRICAL CHARACTERISTICS XC6802A42x Ta=25℃ PARAMETER Input Voltage Supply Current Stand-by Current Shut-down Current Float Voltage 1 Float Voltage 2 (*1) Maximum Battery Current (*2) 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 Volatge 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 Current Sense Pin Pull-Up Current Thermal Shut-Down Detect Temperature Thermal Shut-Down Release Temperature SYMBOL VIN ISS ISTBY ISHUT VFLOAT1 VFLOAT2 IBATMAX IBAT1 IBAT2 IBAT3 IBAT4 IBAT5 ITRIKL1 ITRIKL2 VTRIKL VTRIKL_HYS VUVLO VUVLO_HYS VSD VSD_HYS VASD VASD_HYS ITERM1 ITERM2 VISEN I/CHG1 I/CHG2 V/CHG ΔVRECHRG RON tSS tRECHRG tTERM ISEN_pull_up TTSD TTSR O CONDITIONS MIN 4.25 - TYP 15 15 10 4.2 4.2 100 500 10 50 2.9 90 3.8 190 100 100 70 0.10 0.10 1.0 20 10 0.35 150 450 150 2 1 1.3 115 95 MAX 6.0 35 35 23 ×1.007 ×1.01 800 107 523 2 1 1 14 70 2.987 116 3.914 280 140 0.13 0.13 50 20 0.7 200 900 200 4 3.5 - UNIT V μA μA μA V V mA mA mA μA μA μA mA mA V mV V mV V mV mV mV mA/mA mA/mA V μA mA V mV mΩ μs ms ms μA ℃ ℃ CIRCUIT ③ ③ ③ ② ③ ③ ③ ⑤ ③ ③ ③ ③ ③ ③ ③ ① ① ③ ③ ② ② ③ ③ ③ ④ ③ ① ⑥ ② ② ① - Charge mode, RSEN=10kΩ Stand-by mode Shut-down mode (RSEN=NC, VIN