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LTC3110

更新时间： 2024-11-14 14:58:27
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
36页 549K
描述
2A、双向、降压-升压型 DC/DC 稳压器和充电器 / 平衡器

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中文翻译

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LTC3110 数据手册

 浏览型号LTC3110的Datasheet PDF文件第2页浏览型号LTC3110的Datasheet PDF文件第3页浏览型号LTC3110的Datasheet PDF文件第4页浏览型号LTC3110的Datasheet PDF文件第5页浏览型号LTC3110的Datasheet PDF文件第6页浏览型号LTC3110的Datasheet PDF文件第7页 
LTC3110  
2A Bidirectional Buck-Boost  
DC/DC Regulator and  
Charger/Balancer  
FEATURES  
DESCRIPTION  
The LTC®3110 is a 2A bidirectional buck-boost DC/DC  
regulator with capacitor charger and balancer. Its wide  
0.1V to 5.5V capacitor/battery voltage and 1.8V to 5.25V  
system backup voltage ranges make it well suited to a  
wide variety of backup applications using supercapacitors  
or batteries. A proprietary low noise switching algorithm  
optimizes efficiency with capacitor/battery voltages that  
are above, below or equal to the system output voltage.  
n
V
V
Operating Range: 0.1V to 5.5V  
CAP  
SYS  
n
n
n
Operating Range: 1.71V to 5.25V  
Automatic Switchover from Charge to Backup Mode  
Programmable 2ꢀ Accurate Charge ꢁnput Current  
Limit from 125mA to 2A  
n
n
n
n
n
1ꢀ Backup Voltage Accuracy  
Automatic Backup Capacitor Balancing  
Fixed 1.2MHz Switching Frequency  
Burst Mode® Operation: 40μA Quiescent Current  
Built-In Programmable Multipurpose Comparator  
with Open-Collector Output  
The LTC3110 can autonomously transition from charge  
to backup mode or switch modes based on an external  
command. Pin-selectable Burst Mode operation reduces  
standby current and improves light-load efficiency,  
which combined with a 1μA shutdown current make the  
LTC3110 ideally suited for backup applications. Additional  
features include voltage supervisors for direction control  
and end of charge, and a general purpose comparator  
with open-collector output for interfacing with a µC. The  
LTC3110 is available in thermally enhanced, low profile  
24-lead TSSOP and 4mm × 4mm QFN packages.  
n
n
Open-Collector Outputs to Indicate Direction of  
Operation and End of Charge  
Thermally Enhanced TSSOP-24 and 4mm × 4mm  
QFN-24 Packages  
APPLICATIONS  
n
Supercapacitor Backup Converter and Charger  
n
Battery Backup Converter and Charger  
n
Servers, RAID Systems  
RF Systems with Battery/Capacitor Backup  
All registered trademarks and trademarks are the property of their respective owners.  
n
TYPICAL APPLICATION  
I
CHARGE  
FB  
MAIN  
12V  
BUS  
STEP-DOWN DC/DC  
I
BACKUP  
Backup Mode Efficiency  
220nF  
ꢖꢏꢏ  
ꢙꢚ  
ꢙꢏ  
ꢑꢚ  
ꢑꢏ  
ꢛꢚ  
ꢛꢏ  
ꢖꢐꢔ  
ꢖꢐꢏ  
ꢏꢐꢑ  
ꢏꢐꢒ  
ꢏꢐꢓ  
ꢏꢐꢔ  
ꢏ
0.1V UP TO 5.5V  
10F  
ꢀ
ꢜ ꢕꢐꢔꢚꢀ  
ꢜ ꢏꢐꢚꢁ  
2.2µH  
ꢎꢉꢎ  
ꢎꢉꢎ  
51.1Ω  
SYS  
V
SYS  
ꢇ
3.25V  
2A  
47µF  
1µF  
V
SW1  
SW2 SV  
V
SYS  
1960k  
CAP  
10F  
FBV  
R
CAP  
SEN  
PROG  
13.7k  
523k  
1.50k  
CMPIN  
0.1µF  
2.5V  
1.8V  
1.2V  
SYSTEM  
DC/DC  
REGULATORS  
V
MID  
976k  
221k  
LTC3110  
FB  
1000k 1000k  
ꢖꢐꢔ ꢖꢐꢑ ꢔꢐꢓ ꢕꢐꢏ ꢕꢐꢒ ꢓꢐꢔ ꢓꢐꢑ ꢚꢐꢓ  
ꢃꢀꢄ  
MODE  
RUN  
DIR  
ꢀ
Cꢁꢂ  
µC  
12V BUS  
SUPERVISOR  
CHRG  
CAPOK  
CMPOUT  
ꢕꢖꢖꢏ ꢗꢁꢏꢖꢘ  
END OF CHRG  
CAPLOW  
SGND PGND  
3110 TA01a  
Rev C  
1
Document Feedback  
For more information www.analog.com  
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