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參數(shù)資料
| 型號： | AIC1803ACS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | Three-Cell Lithium-Ion Battery Protection IC |
| 中文描述： | 三節(jié)鋰離子電池保護(hù)IC |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 161K |
| 代理商： | AIC1803ACS |
AIC1803
8
n
PIN DESCRIPTIONS
PIN 1: OC-
NMOS open drain output
for
control of the charge control
MOSFET M2. When overcharge
occurs, this pin sinks current to
switch the
external PNP Q1 on,
and charging is inhibited by
turning off the charge
control
MOSFET M2.
PIN 2: CS-
Input pin for current sensing.
Using the drain-source voltage of
discharge
MOSFET
M1 (voltage between
VCC and CS),
it senses
discharge current
during
normal mode and detects
whether charging current is
present
during
mode.
Output pin for control
of discharge control MOSFET M1.
Wvoltage sensing. This pin is to be
pin goes high to turn off the discharge control MOSFET M1
connected
to
terminal of the battery cell BAT2.
control
power-down
PIN 3: OD -
PIN 4: NC -
No connection
PIN 5: TD
-
Overdischarge delay time setting
pin.
Overcurrent
delay
time setting
pin.
Overcharge
delay time setting
pin.
PIN 6: TI
-
PIN 7: TC
-
PIN 8: NC
-
PIN 9: GND
-
No connection.
Ground pin. This pin is to be
connected to the negative
terminal of the battery cell BAT3.
PIN10: UD3 -
This pin is to be connected to the
positive terminal of the battery
cell BAT3 for cell-balancing
bleeding
function
overcharge condition.
under
PIN11: VC3-
Input
voltage sensing. This pin is to be
connected
to
terminal of the battery cell BAT3.
pin
for
battery
BAT3
the
positive
PIN12: UD2 - This pin is to be connected to the
positive terminal of the battery
cell
BAT2
bleeding
overcharge condition.
for
function
cell-balancing
under
PIN13: VC2-
Input
pin
for
battery
BAT2
the
positive
PIN14: UD1-
This pin is to be connected to the positive terminal of the
PIN15: VC1-
Input
voltage sensing. This pin is to be
connected
to
terminal of the battery cell BAT1.
pin
for
battery
BAT1
the
positive
PIN16: VCC -
Power supply pin. This pin is to
be connected to the positive
terminal of the battery cell BAT1.
n
APPLICATION INFORMATIONS
l
THE OPERATION
Initialization
On initial power-up , such as connecting the
battery pack for the first time to the AIC1803 , the
AIC1803 enters the power-down mode . A charger
must be applied to the AIC1803 circuit to enable
the pack.
Overcharge Protection
When the voltage of either of the battery cells
exceeds the overcharge protection voltage (V
OCP
)
beyond the overcharge delay time (T
OC
) period,
charging is inhibited by the turning-off of the
charge control MOSFET M2. The overcharge
delay time is set by the external capacitor C
TC
.
Inhibition of charging is immediately released
when the voltage of the overcharged cell becomes
lower than overcharge release voltage (V
OCR
or
V
OCP
-V
HYS
) through discharging.
Overdischarge Protection
When the voltage of either of the battery cells falls
below the overdischarge protection voltage (V
ODP
)
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