AIC1821 AIC [Analog Intergrations Corporation], AIC1821 Datasheet

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AIC1821

Manufacturer Part Number
AIC1821
Description
ONE-CELL LITHIUM-ION BATTERY PROTECTION IC
Manufacturer
AIC [Analog Intergrations Corporation]
Datasheet

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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AIC1821ACV
Quantity:
2 160
Part Number:
AIC1821APV
Manufacturer:
ANALOG
Quantity:
20 000
Part Number:
AIC1821BCS
Manufacturer:
SIEMENS
Quantity:
101
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ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
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FEATURES
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
Reduction in Board Size due to Miniature Package
SOT-25 and Less External Components.
Ultra-Low Quiescent Current at 7 A (V
Ultra-Low Power-Down Current at 0.4 A (V
=2.3V).
Precision Overcharge Protection Voltage
Built-in Delay Time Circuits for Overcharge, Over-
discharge, and Overcurrent Protection.
Load Detection Function during Overcharge Mode.
Two Detection Levels for Overcurrent Protection.
Protection IC for One-Cell Lithium-Ion Battery
Pack.
4.35V
4.30V
4.25V
4.20V
30mV for the AIC1821A
30mV for the AIC1821B
30mV for the AIC1821C
30mV for the AIC1821D
SI9926
M1
PRELIMINARY
Protection Circuit for One-Cell Lithium-Ion Battery
100
R1
CC
=3.5V).
0.1 F
C1
ONE-CELL LITHIUM-ION BATTERY PROTECTION IC
CC
5
2
3
VCC
GND
OD
AIC1821
n
DESCRIPTION
The AIC1821 battery protection IC is designed to
protect
degrading
overdischarge,
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
voltage ensures safe and full utilization charging.
Three different specification values for overcharge
protection
protection requirements. The very low standby
current drains little current from the cell while in
storage.
www.analog.com.tw
TEL: (8863)577-2500
CS
OC
1
4
accurate
M2 SI9926
lithium-ion
voltage
FUSE
the
and/or
10M
R3
lifetime
30mV
FAX:(8863)577-2510
are
battery
SPEC NO: DS-1821-P1 06/07/00
100K
R2
overcurrent
overcharging
provided
due
from
BATT+
BATT-
AIC1821
to
damage
for
for
overcharge,
detection
one-cell
various
1
or

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AIC1821 Summary of contents

Page 1

... VCC 100 C1 0 GND 3 OD AIC1821 Protection Circuit for One-Cell Lithium-Ion Battery SPEC NO: DS-1821-P1 06/07/00 DESCRIPTION The AIC1821 battery protection IC is designed to protect lithium-ion battery from degrading the lifetime due overdischarge, and/or overcurrent lithium-ion battery powered systems, such as cellular phones. The ultra-small package and less ...

Page 2

... ORDERING INFORMATION AIC1821 XCX PACKAGE TYPE V: SOT-23-5 OVERCHARGE PROTECTION A: 4.35V B: 4.30V C: 4.25V D: 4.20V n ABSOLUTE MAXIMUM RATINGS .................................... … … … … … ..................................................... 18V Supply Voltage DC Voltage Applied on other Pins ............... … … … … … … … … … … .............................. 18V Operating Temperature Range ..................................... … … … … … … . ............. -40 C~85 C ...

Page 3

... -0.1 CC OCP V + 0.1V OCP V = 2.5V 2. =3.5V, 1V>V >0. =3.5V, V > =3.5V, OC pin short to CC GND –50mV CC OCP V =2. www.analog.com.tw TEL: (8863)577-2500 AIC1821 SPEC NO: DS-1821-P1 06/07/00 MIN. TYP. MAX 0.4 1.0 PD 4.32 4.35 4.38 4.27 4.30 4.33 OCP 4.22 4.25 4.28 4.17 4.20 4.23 230 300 370 HYS ODP 2.45 2.6 2.75 2.85 3.0 3.15 ODR 180 200 220 OIP ...

Page 4

... It also used to detect whether load is connected during overcharge mode. PIN 5: VCC - Power supply pin. This pin connected to the positive terminal of the battery cell. www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1821 OD 4 ...

Page 5

... The overcurrent condition returns to the normal mode when the load is released and the impedance between the BATT+ and BATT- terminals is 20M or higher. The AIC1821 is provided with the two overcurrent detection levels (0.2V and 1V) and the two overcurrent delay time (T OI1 to each overcurrent detection level. ...

Page 6

... Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. ONE-CELL LITHIUM-ION BATTERY PROTECTION IC function after Hi-Z charger connected load connected charger connected =3.5V OI1 <T SPEC NO: DS-1821-P1 06/07/00 overdischarge. Resistance recommended Hi-Z charger connected load connected T OI1 OI2 www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1821 of 100K is 6 ...

Page 7

... BL0C AIC1821DCV BL0D ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. ONE-CELL LITHIUM-ION BATTERY PROTECTION IC SYMBOL www.analog.com.tw TEL: (8863)577-2500 AIC1821 SPEC NO: DS-1821-P1 06/07/00 MIN MAX 1.00 1.30 — 0.10 0.70 0.90 0.35 0.50 0.10 0.25 2.70 3.10 1.40 1.80 1.90 (TYP) 2.60 3.00 0.37 — FAX:(8863)577-2510 ...

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