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AIC1781ACSTR

更新时间： 2024-11-09 04:48:59
品牌 Logo 应用领域
沛亨 - AIC 电池控制器
页数 文件大小 规格书
18页 392K
描述
Battery Charge Controller

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中文翻译

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AIC1781ACSTR 数据手册

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AIC1781A  
Battery Charge Controller  
FEATURES  
DESCRIPTION  
n
n
l Fast Charge Control of NiMH/NiCd Batteries,  
The AIC1781A fast charge controller IC is  
designed for intelligent charging of NiMH or NiCd  
even with a Fluctuating Charging Current.  
DT / Dt  
- DV  
,
l Fast Charge Termination by:  
0DV  
,
- DV  
detection (peak  
detection are the  
batteries without the risk of overcharge.  
, Safety Timer, Maximum Temperature,  
0DV  
Detection  
(-0.25%),  
Maximum Voltage.  
l Linearly Adjustable  
Safety Timer.  
DT / Dt  
voltage timer) and  
DT / Dt  
Detection Slope and  
0DV  
primary methods employed by the AIC1781A to  
terminate fast charge. The fast charge can also be  
cut off by maximum battery voltage and maximum  
battery temperature detection along with the  
safety timer to prevent charging under fault  
conditions of the charging system or the battery  
itself.  
l Adjustable Peak Voltage Timer for  
.
l Battery Voltage Protection Range Selectable.  
l Selectable Battery Temperature Protection  
Mode.  
l Protection against Battery Voltage and Battery  
Temperature Faults.  
l Selectable LED Display Mode for Battery Status.  
l Five Pulsed Trickle Charge Modes.  
l Discharge-before-Charge Function Available for  
Eliminating Memory Effect.  
DT / Dt  
- DV  
detection methods have  
Both  
and  
been proved powerful in terminating fast charging  
for NiMH and NiCd batteries. The AIC1781A  
utilizes the combination of these two methods to  
achieve reliable decision of ending fast charge and  
l Quick and Easy Testing for Production.  
l 16-pin DIP or SO Packages.  
- DV  
prevent misacting caused by using  
detection  
APPLICATIONS  
Battery Fast Chargers for:  
n
alone under certain conditions. Fig. 1 shows an  
example of charging curve of a battery charged by  
a fluctuating current from a NiMH battery charger,  
which uses the AIC1781A controller IC to achieve  
optimal charging. This technique, in cooperating  
l Mobile Phones.  
l Notebook and Laptop Personal Computers.  
l Portable Power Tools and Toys.  
l Portable Communication Equipments.  
l Portable Video & Stereo Equipments.  
0DV  
with the  
detection (peak voltage timer), is  
particularly suitable for NiMH batteries, whose  
voltage drop is hardly significant yet temperature  
100  
1.55  
Charge Current = 600 mA  
Cell Capacity = 550 mA  
NiMH Battery  
DT / Dt  
- DV  
rises rapidly. The  
or  
detection  
80  
1.45  
circuitry may be disabled independently for  
different applications, such as system-integrated  
chargers, chargers with varying charge current, or  
battery packs lack of temperature sensing  
thermistor.  
Cell Voltage  
60  
1.35  
40  
1.25  
Temperature  
20  
1.15  
0
10  
20  
30  
40  
50  
60  
The safety timer period, mode of battery  
temperature protection, battery voltage protection  
range, pulsed trickle charge duty, and LED display  
mode are all adjustable or selectable.  
Charge Time (min.)  
Fig. 1 Battery Charging Characteristics Resulting from  
an AIC1781A-Controlled Charger with  
Fluctuating Charging Current  
a
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-1781AP-01 011604  
1
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