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PDF AIC1821 Data sheet ( Hoja de datos )
| Número de pieza | AIC1821 | |
| Descripción | One-Cell Lithium-Ion Battery Protection IC | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1821
One-Cell Lithium-Ion Battery Protection IC
n FEATURES
l Reduction in Board Size due to Miniature
Package SOT-25 and Less External
Components.
l Ultra-Low Quiescent Current at 7µA (VCC=3.5V).
l Ultra-Low Power-Down Current at 0.6µA (VCC
=2.2V).
l Precision Overcharge Protection Voltage
4.35V ± 50mV for the AIC1821A
4.30V ± 50mV for the AIC1821B
4.25V ± 50mV for the AIC1821C
4.20V ± 50mV for the AIC1821D
l Built-in Delay Time Circuits for Overcharge,
Over-discharge, and Overcurrent Protection.
l Load Detection Function during Overcharge
Mode.
l Two Detection Levels for Overcurrent Protection.
n APPLICATIONS
l Protection IC for One-Cell Lithium-Ion Battery
Pack.
n DESCRIPTION
The AIC1821 battery protection IC is designed
to protect lithium-ion battery from damage or
degrading the lifetime due to overcharge,
overdischarge, and/or overcurrent for one-cell
lithium-ion battery powered systems, such as
cellular phones. The ultra-small package and
less required external components make it ideal
to integrate the AIC1821 into the limited space
of battery pack.
The accurate ±50mV overcharging detection
voltage ensures safe and full utilization
charging. 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 TYPICAL APPLICATION CIRCUIT
FUSE
BATT+
M1
SI9926
R1 5 VCC
100 C1
0.1µF
2 GND
3 OD
4
CS
OC 1
AIC1821
R3
10M
M2 SI9926
Protection Circuit for One-Cell Lithium-Ion Battery
R2
100K
BATT-
Analog Integrations Corporation
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1821-00 012102
1
1 page  
AIC1821
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Overcharge Release Voltage vs. Temperature
4.10
AIC1821B
4.05
4.00
3.95
3.90-40
-20
0
20 40 60 80
Temperature ( °C)
Overcharge Delay Time vs. Temperature
145
140
135
130
125
-40
12
11
-20 0
20 40 60 80
Temperature (°C)
Overcurrent Delay Time 1 vs. Temperature
Vcc=3.5V
10
9
8
-40 -20
0
20 40 60 80
Temperature (°C)
Overdischarge Release Voltage vs. Temperature
3.10
3.05
3.00
2.95
2.90
-40
-20
0 20 40
Temperature ( °C)
60 80
Overdischarge Delay Time vs. Temperature
12
11
10
9
8
-40 -20
0
20 40 60 80
Temperature (°C)
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC1821.PDF ] | |
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