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PDF AIC1804ACS Data sheet ( Hoja de datos )
| Número de pieza | AIC1804ACS | |
| Descripción | Three- Or Four-Cell Lithium-Ion Battery Protection IC | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1804
Three- Or Four-Cell Lithium-Ion Battery
Protection IC
n FEATURES
l Cell Number Selection Function to Select 3 or 4
cells Protection.
l Ultra-Low Quiescent Current at 17µA (4-Cell,
VCELL=3.5V).
l Ultra-Low Power-Down Current at 2.2µA (4-Cell,
VCELL=2.3V)
l Wide Supply Voltage Range: 2V to 18V.
l Precision Overcharge Protection Voltage:
4.35V± 30mV for the AIC1804A
4.30V± 30mV for the AIC1804B
4.25V± 30mV for the AIC1804C
4.20V± 30mV for the AIC1804D
l Externally Set Overcharge, Overdischarge and
Overcurrent Delay Time.
l Built-in Cell-balancing Bleeding Network under
Overcharge Condition.
l Three Detection Levels for Overcurrent Protection.
n DESCRIPTION
The AIC1804 is designed to protect the lithium-
ion battery from damage or degrading the lifetime
due to overcharging, overdischarging and
overcurrent for three- or four-cell lithium-ion
battery powered systems such as notebook PCs.
It can also provide the cell-balancing “bleeding”
function to automatically discharge the
overcharged cell until the overcharge condition is
released.
Safe and full utilization charging is ensured by
the accurate ±30mV overcharge detection. Four
different specification values for overcharge
protection voltage are provided for various
protection requirements. The very low standby
current drains little current from the cell while in
storage.
n APPLICATIONS
l Protection IC for Three- or Four-Cell Lithium-Ion
Battery Packs.
n TYPICAL APPLICATION CIRCUIT
CT D
82nF
CT I
2.2nF
R8
1K
1 NSL
2 OC
3 CS
4 OD
5 TD
6 TI
7 TC
CTC
82nF8 GND
VCC 16
C1
0.1µF
R1
200
UD1 15
VC1 14
C2
0.1µF
R2
2K
UD2 13
VC2 12
C3
0.1µF
R3
2K
UD3 11
VC3 10
C4
UD4 9
R4
33K
0.1µF
AIC1804
SI4435 M1 SI4435
M2
BAT1
FUSE
R5
1M
BATT+
BAT2
BAT3
BAT4
R6
1M
R7
1M
BATT-
DS-1804-01 July 13, 00
Protection Circuit for Four-Cell Lithium-Ion Battery Pack
www.analog.com.tw
1
1 page  
AIC1804
n TYPICAL PERFORMANCE CHARACTERISTICS
Vcc Pin Input Current vs. Supply Voltage
22
20
18
16
1410.4 11.2 12.0 12.8 13.6 14.4 15.2 16.0
Supply Voltage (V)
Vcc Pin Input Current vs. Temperature
22
VCELL =3.5V
20
18
16
14
-20 -10
0
10 20 30 40 50 60 70
Temperature (°C)
Overcharge Protection Voltage vs. Temperature
4.30
AIC180 4C
4.28
4.26
4.24
4.22
4.20
-20
0 20 40
Temperature (°C)
60 70
Vcc Pin Power-Down Current vs. Supply Voltage
2.2
Ta=25°C
2.0
1.8
1.6
1.4
1.2
1.0
6.0 6.4 6.8 7.2 7.6 8.0 8.4 8.8 9.2
Supply Voltage (V)
Vcc Pin Power-Down Current vs. Temperature
3.0
2.8
2.6
VCELL=2.3V
2.4
2.2
2.0
1.8
1.6
-20 -10
0
10 20 30 40 50 60 70
Temperature (°C)
Overdischarge Protection Voltage vs. Temperature
2.42
2.41
2.40
2.39
2.38
2.37
2.36
-20 -10
0
10 20 30 40 50 60 70
Temperature (°C)
5
5 Page 
AIC1804
n APPLICATION EXAMPLES
R8
1K
CTD +
82nF
+
CTI
2.2 nF
1
NSL
2
3 OC
CS
4
OD
5
TD
6
7 TI
+ CT C
TC
82nF 8
GND
16
VCC
C1
0.1µF
15
UD1 14
VC1
13
UD2 12
VC2
11
UD3 10
VC3
9
UD4
R1
1K
R2
C2 1K
0.1 µF
R3
C3 1K
0.1µF
R4
1K
C4
0.1µF
AIC1804
SI4435 M1
SI4435
M2
FUSE
R5
1M
BATT+
BAT1
BAT2
BAT3
R6
1M
R7
1M
BATT-
Fig. 1 Protection Circuit for Three-Cell Lithium-Ion Battery Pack
n TIMING DIAGRAM
l Overcharge and Overdischarge Protection (VCS=VCC)
V OCP
-VOCP VHYS
VCELL
VODR
VODP
TOC
V BAT4
V BAT1
<TO C
V BAT2
TOD
VOC
0V
Hi-Z
Hi-Z
VOD
VCC
0V
V BAT3
<TOD
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AIC1804ACS.PDF ] | |
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