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XC6803A4D14R-G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
10/25
XC6803 Series
■
OPERATIONAL EXPLANATION (Continued)
●Li-ion battery temperature monitoring function
The IC monitors the Li-ion battery temperature during charging by means of the NTC thermistor (“thermistor” below) connected to the
THIN pin, and controls the charge voltage V
BAC
and charge current I
BAT
according to the Li-ion battery temperature as shown below to
charge safely. The charge state changes 50ms after the Li-ion battery temperature reaches each of the change points.
●XC6803x4 (4 Temperature monitoring)
Cold Operation
When 0°C < Thermistor Temperature ≤ 10°C, the charge current is limited to I
CHG
× 0.5.
(*1)
When Thermistor Temperature ≤ 0°C, charging is stopped.
(*2)
Normal Operation
When 10°C < Thermistor Temperature < 45°C, charging takes place with the charging current at I
CHG
and the charging
voltage at 4.2V.
(*1)
Hot Operation
When 45°C ≤ Thermistor Temperature < 60°C, charging takes place with the charging voltage at 4.05V.
(*1)
When 60°C ≤ Thermistor Temperature, charging is stopped.
(*2)
●XC6803x3 (3-temperature monitoring)
Instead of the 60°C monitoring of the XC6803x4, the XC6803x3 stops charging when 45°C ≤ Thermistor Temperature.
(*2)
●XC6803x2 (2-temperature monitoring)
Instead of the 10°C and 60°C monitoring of the XC6803x4, the XC6803x2 stops charging when Thermistor Temperature ≤ 0°C and
Thermistor Temperature ≥ 45°C.
(*2)
In addition, when 0°C < Thermistor Temperature ≤ 10°C, the charge current remains at I
CHG
.
(*1)
(*1)
During trickle charging, the charge current is limited to I
CHG
× 0.1.
(*2)
Even when charging is stopped, the t
TRK
count and t
CHG
count are continued and the charge status output pin maintains the ON state.
The thermistor temperature detection of this IC conforms to the characteristics of the NCP15XH103F03RC of Murata Manufacturing Co., Ltd.
I
BAT
= 0.5 × I
CHG
V
BAC
= 4.2V
Cold
Operation
Normal Operation
Charge Current vs. Thermistor Temperature
Charge Voltage vs. Thermistor Temperature
10 °C0 °C 45 °C 60 °C
Hot
Operation
V
BAC
= 4.05V
I
BAT
= I
CHG
Cold
Operation
Normal Operation
Hot
Operation
10 °C0 °C 45 °C 60 °C
11/25
XC6803
Series
■OPERATIONAL EXPLANATION (Continued)
Timing chart example
XC6803x4
V
BAT
I
BAT
Ｖ
ＴＲK
(= 2.9Ｖ)
I
ＴＲ K
, I
FIN
(= 0.1 × I
CHG
)
I
CHG
0Ｖ
Ｖ
BAC
(= 4.05Ｖ)
Trickle Charge
Main Charge
Completed Charge
0mA
t
t
Ｖ
BAC
(= 4.2Ｖ)
Attached
Battery
Cold Operation
(*)
Hot Operation
(*)
0.5 × I
CHG
Battey
Temperature
10°C
t
45°C
0°C
60°C
(*)
With regard to the detail of the Cold Operation and Hot Operation, please refer to “Li-ion battery
temperature monitoring function” of the Operational Explanation.
12/25
XC6803 Series
■NOTES ON USE
1. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be exceeded.
2. Where wiring impedance is high, operations may become unstable. Please strengthen V
IN
and V
SS
wiring in particular.
3. Please wire the C
IN
as close to the IC as possible.
4. Do not connect anything other than a resistance for setting the charge current to the I
SET
pin.
5. Torex places an importance on improving our products and their reliability.
We request that users incorporate fail-safe designs and post-aging protection treatment when using Torex products in their systems.
6. This IC uses an external thermistor to detect and control temperature with high accuracy.
Please sufficiently test the position of the external thermistor to ensure that it enables accurate temperature detection.
7. Reversing the polarity of the battery may cause destruction and is extremely dangerous. Never reverse the polarity of the battery.
8. Short-circuiting to neighboring pins may cause malfunctioning and destruction. Exercise sufficient caution when mounting and using
the IC.
9. If a large ripple voltage occurs at the V
IN
pin, the IC may malfunction. Please test thoroughly.
10. Taking the temperature characteristics and the dispersion into consideration, please set the charge current not to exceed the range of
40mA to 280mA.
11. If the I
SET
pin is shorted to the GND, there is a possibility that the IC is destroyed before the over-current monitor function is activated.
12. When V
BAT
is 1V or less, the error range of the trickle charge current becomes big. When V
IN
– V
BAT
voltage is high in particular, please
pay attention when using as there are possibilities that a large trickle current flows.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

XC6803A4D14R-G

Mfr. #:
Buy XC6803A4D14R-G
Manufacturer:
Torex Semiconductor
Description:
Battery Management Linear Charger IC
Lifecycle:
New from this manufacturer.
Delivery:
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