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XC6802_12 Datasheet, PDF (1/21 Pages) Torex Semiconductor – 800mA Single Cell Li-ion Battery Linear Charger IC | |||
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XC6802 Series
800mA Single Cell Li-ion Battery Linear Charger IC
ETR2501-006
ËGENERAL 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 ʶ
0.7% and the trickle charge voltage and accuracy is 2.9V ʶ3%. 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 seriesâ
charge status output pin, /CHG pin, is capable of checking the ICâs charging state while connecting with an external LED.
ËAPPLICATIONS
Ëç Charging docks, charging cradles
Ëç MP3 players, portable audio players
Ëç Cellular phones, PDAs
Ëç Bluetooth headsets
ËçFEATURES
Operating Voltage Range : 4.25V ~ 6.0V
Charge Current
: Externally set up to 800mA (MAX.)
Charge Termination Voltage : 4.2V ʶ0.7%
Trickle Charge Voltage
: 2.9V ʶ3%
Supply Current (Stand-by) : 15ÐA (TYP.)
Function
: Constant-current/constant-voltage Operation
Thermal Shutdown
Automatic Recharge
Charge Status Output Pin
Soft-start Function (Inrush Limit Current)
Operating Ambient Temperature : -40ËÊ+85Ë
Packages
: SOT-89-5, SOT-25, USP-6C, USP-6EL
Environmentally Friendly : EU RoHS Compliant, Pb Free
ËTYPICAL APPLICATION CIRCUIT
ËTYPICAL PERFORMANCE
CHARACTERISTICS
ËBattery Charge Cycle
LLi-i-iioonn BBaatttteerryyCChhaargr geeCCyycclele
VIN=5.0V, CIN=1ÐF
VIN=5.0V, CIN=1uF
700
RSRESNEN==22kkâ¦o,hm8,3803m0mAAhh BBaatttteerryy 4.40
BatBteatrtyerVyoVltoaltgaege
600
4.20
500
4.00
400
3.80
300
3.60
200
ChCahrgaergeCCuurrrerenntt
3.40
100
3.20
0
3.00
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
TiTmiem(eho(huor)urs)
1/21
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