XC6806 datasheet(9/22 Pages) TOREX

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XC6806

Series

■

OPERATIONAL EXPLANATION (Continued)

< Lithium Ion Battery Temperature Monitor Function >

The XC6806 monitors the temperature of the lithium ion battery by means of an NTC thermistor connected to the THIN pin, and

controls the charge current and charge voltage based on the temperature to safely charge the battery. NTC temperature detection

conforms to the characteristics of the NCP15XH103F03RC of Murata Manufacturing Co., Ltd. (NTCG103JF103FT of TDK Co.,

LTD. )

●Type A

（4 Temperature Monitor 0℃,10℃,45℃,60℃）

Cold Operation

When 0°C＜Thermistor Temperature≦10°C(VT0, VT10), the charge current is limited to IBAT × 0.5.

When Thermistor Temperature≦0°C(VT0), charge and the timer count pause. While charge is paused, the CSO pin output is OFF.

Normal Operation

When 10°C＜Thermistor Temperature＜45°C(VT10, VT45), the battery is charged at the charge current IBAT and the charge

voltage VCV.

Hot Operation

When 45°C≦Thermistor Temperature＜60°C(VT45, VT60), the charge voltage switches to VCVH and charging continues.

When Thermistor Temperature≧60°C(VT60), charge and the timer count pause. While charge is paused, the CSO pin output is

OFF.

●Type B （3 Temperature Monitor 0℃, 10℃, 45℃）

Unlike Type A, Type B does not have 60°C(VT60) monitoring, and at 45°C≦Thermistor Temperature(VT45), charge and the timer

count pause. While charge is poused, the CSO pin output is OFF.

●TypeC （2 Temperature Monitor 0℃, 60℃）

Unlike Type A, Type C does not have 10°C(VT10) and 45°C(VT45) monitoring, and when Thermistor Temperature≦0°C(VT0) or

Thermistor Temperature≧60°C(VT60), charge and the timer count pause. While charge is paused, the CSO pin output is OFF.

●VREG Pin

The VREG pin is a reference voltage output pin for internal and external NTC thermistor temperature detection. Connect a 0.1μF

capacitor CREG and 10 kΩ resistor. (■Refer to the typical application circuit.)

IBAT x 0.5

VCV

Cold

Operation

(Type A, B Only)

Normal Operation

Charge Current vs Thermistor Temperature

Charge Voltage vs Thermistor Temperature

10℃

0℃

45℃

60℃

Hot

Operation

(Type A Only)

VCVH

IBAT(Adjustable)

10℃

0℃

45℃

60℃

Cold

Operation

(Type A, B Only)

Normal Operation

Hot

Operation

(Type A Only)

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