XC6802 데이터 시트보기 (PDF) - TOREX SEMICONDUCTOR

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XC6802

800mA Single Cell Li-ion Battery Linear Charger IC

TOREX SEMICONDUCTOR 

XC6802 Series

800mA Single Cell Li-ion Battery Linear Charger IC

ETR2501-006

■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 : 4.25V ~ 6.0V

Charge Current

: Externally set up to 800mA (MAX.)

Charge Termination Voltage : 4.2V ±0.7%

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)

Operating Ambient Temperature : -40℃〜+85℃

Packages

: SOT-89-5, SOT-25, USP-6C, USP-6EL

Environmentally Friendly : EU RoHS Compliant, Pb Free

■TYPICAL APPLICATION CIRCUIT

■TYPICAL PERFORMANCE

CHARACTERISTICS

●Battery Charge Cycle

LLi-i-iioonn BBaatttteerryyCChhaargr geeCCyycclele

VIN=5.0V, CIN=1μF

VIN=5.0V, CIN=1uF

700

RSRESNEN==22kkΩo,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)

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