AIC1811 Datasheet, PDF (1/8 Pages) Analog Intergrations Corporation – One-Cell Lithium-Ion Battery Protection IC

AIC1811
One-Cell Lithium-Ion Battery Protection IC
n FEATURES
n DESCRIPTION
l Reduction in Board Size due to Miniature
Package SOT-23-5 and Less External
Components.
l Ultra-Low Quiescent Current at 7µA (V_CC=3.5V).
l Ultra-Low Power-Down Current at 0.4µA (V_CC
=2.3V).
l Precision Overcharge Protection Voltage
4.35V ± 50mV for the AIC1811A
4.30V ± 50mV for the AIC1811B
4.25V ± 50mV for the AIC1811C
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.
The AIC1811 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 AIC1811 into the limited space of
battery pack.
The accurate ±50mV overcharging detection
voltage ensures safe and full utilization charging.
Three 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 One-Cell Lithium-Ion Battery
Pack.
n TYPICAL APPLICATION CIRCUIT
M1
SI9926
FUSE
R1
5 _VCC
100
C1
4
CS
0.1µF
2 _GND
R2
3 _OD
OC ¹
51K
AIC1811
R3
10M
M2 SI9926
Protection Circuit for One-Cell Lithium-Ion Battery
BATT+
BATT-
DS-1811-00 June 7, 00
www.analog.com.tw
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