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LTC3625

更新时间： 2024-09-25 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 电池电容器
页数 文件大小 规格书
16页 266K
描述
具自动电池平衡功能的 1A、高效率、两节超级电容器充电器

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中文翻译

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LTC3625 数据手册

 浏览型号LTC3625的Datasheet PDF文件第2页浏览型号LTC3625的Datasheet PDF文件第3页浏览型号LTC3625的Datasheet PDF文件第4页浏览型号LTC3625的Datasheet PDF文件第5页浏览型号LTC3625的Datasheet PDF文件第6页浏览型号LTC3625的Datasheet PDF文件第7页 
LTC3625/LTC3625-1  
1A High Efficiency 2-Cell  
Supercapacitor Charger  
with Automatic Cell  
Balancing  
FeaTures  
DescripTion  
TheLTC®3625/LTC3625-1areprogrammablesupercapaci-  
tor chargers designed to charge two supercapacitors in  
series to a fixed output voltage (4.8V/5.3V or 4V/4.5V  
selectable) from a 2.7V to 5.5V input supply. Automatic  
cell balancing prevents overvoltage damage to either  
supercapacitorwhilemaximizingchargerate.Nobalancing  
resistors are required.  
n
High Efficiency Step-Up/Step-Down Charging of Two  
Series Supercapacitors  
n
Automatic Cell Balancing Prevents Capacitor  
Overvoltage During Charging  
n
Programmable Charging Current Up to 500mA  
(Single Inductor), 1A (Dual Inductor)  
n
V = 2.7V to 5.5V  
IN  
n
Selectable 2.4V/2.65V Regulation per Cell (LTC3625)  
High efficiency, high charging current, low quiescent cur-  
rent and low minimum external parts count (one inductor,  
n
Selectable 2V/2.25V Regulation per Cell (LTC3625-1)  
n
Low No-Load Quiescent Current: 23µA  
onebypasscapacitoratV andoneprogrammingresistor)  
IN  
n
I
, I < 1µA in Shutdown  
VOUT VIN  
maketheLTC3625/LTC3625-1ideallysuitedforsmallform  
n
Low Profile 12-lead 3mm × 4mm DFN Package  
factor backup or high peak power systems.  
applicaTions  
Charging current/maximum input current level is pro-  
grammedwithanexternalresistor.Whentheinputsupplyis  
removedand/ortheENpinislow, theLTC3625/LTC3625-1  
automatically enter a low current state, drawing less than  
1µA from the supercapacitors.  
n
Servers, RAID Systems, Mass Storage, High Current  
Backup Supplies  
n
Solid State Hard Drives  
n
Wireless Power Meters  
High Peak Power Boosted Supplies  
n
The LTC3625/LTC3625-1 are available in a compact  
12-lead 3mm × 4mm × 0.75mm DFN package.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners.  
Typical applicaTion  
1A SCAP Charger  
Charging Two 2:1 Mismatched Supercapacitors  
6
LTC3625  
V
V
OUT  
C
C
= 50F  
IN  
TOP  
BOT  
V
IN  
V
OUT  
= 100F  
2.7V TO 5.5V  
4.8V  
5
R
= 61.9k  
10µF  
PROG  
3.3µH  
3.3µH  
SW2  
SW1  
CTL = 0  
= 0  
C
C
≥ 0.1F  
TOP  
BOT  
V
SEL  
4
3
V
OUT  
V
MID  
PROG  
≥ 0.1F  
61.9k  
V
MID  
2
1
0
PFI  
EN  
PGOOD  
PFO  
CTL  
V
SEL  
3625 TA01a  
0
20 40 60 80 100 120 140 160 180 200  
TIME (SECONDS)  
3625 TA01b  
3625f  
ꢀ
1234567...16

中文翻译

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