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LTC3525

更新时间： 2024-11-13 14:58:11
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
16页 532K
描述
具输出断接功能的 400mA 微功率同步升压型 DC/DC 转换器

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中文翻译

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LTC3525 数据手册

 浏览型号LTC3525的Datasheet PDF文件第2页浏览型号LTC3525的Datasheet PDF文件第3页浏览型号LTC3525的Datasheet PDF文件第4页浏览型号LTC3525的Datasheet PDF文件第5页浏览型号LTC3525的Datasheet PDF文件第6页浏览型号LTC3525的Datasheet PDF文件第7页 
LTC3525-3/  
LTC3525-3.3/LTC3525-5  
400mA Micropower  
Synchronous Step-Up DC/DC  
Converter with Output Disconnect  
FeaTures  
DescripTion  
TheLTC®3525-3/LTC3525-3.3/LTC3525-5arehighefficiency  
n
Up to 95% Efficiency  
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Output Disconnect and Inrush Current Limit  
Fixed Output Voltages of 3V, 3.3V or 5V  
Delivers 65mA at 3V from a 1V Input  
Delivers 60mA at 3.3V from a 1V Input,  
or 140mA at 3.3V from a 1.8V Input  
Delivers 175mA at 5V from a 3V Input  
synchronousstep-upDC/DCconverterswithoutputdiscon-  
nect that can start up with an input as low as 0.85V. They  
offeracompact,highefficiencyalternativetochargepumps  
in single cell or dual cell alkaline or Li-Ion applications. Only  
threesmallexternalcomponentsarerequired.TheLTC3525  
is offered in fixed output voltages of 3V, 3.3V or 5V.  
n
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Burst Mode® Operation: I = 7µA  
Q
The device includes a 0.5Ω N-channel MOSFET switch and  
a0.8Ω P-channelsynchronousrectifier.Peakswitchcurrent  
rangesfrom150mAto400mA,dependingonload,providing  
enhanced efficiency. Quiescent current is an ultralow 7µA,  
maximizing battery life in portable applications.  
Only Three External Components  
V > V  
Operation  
IN  
OUT  
<1µA Shutdown Current  
Antiringing Control  
Short-Circuit and Overtemperature Protection  
Very Low Profile of 1mm  
Tiny 6-Lead SC70 Package  
Other features include <1µA shutdown current, anti-  
ringing control and thermal shutdown. The LTC3525 is  
available in a tiny 6-Lead SC70 package.  
applicaTions  
List of LTC3525 Options  
n
PART NAME  
INPUT START-UP  
VOLTAGE  
OUTPUT  
VOLTAGE SHUTDOWN MODE  
V
STATUS IN  
OUT  
MP3 Players  
n
Portable Instruments  
LTC3525-3  
0.85V  
0.85V  
0.85V  
0.85V  
0.7V  
3V  
3.3V  
5V  
Output Disconnect  
Output Disconnect  
Output Disconnect  
Pass Through Mode  
Output Disconnect  
n
Glucose Meters  
Digital Cameras  
LTC3525-3.3  
LTC3525-5  
n
L, LT, LTC, LTM, Burst Mode, 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. Patents pending.  
LTC3525D-3.3  
LTC3525L-3  
3.3V  
3V  
LTC3525-3.3 Efficiency and Power  
Loss vs Load Current  
Typical applicaTion  
L1*  
100  
100  
10  
10µH  
90  
80  
70  
60  
50  
40  
30  
20  
LTC3525-3.3  
EFFICIENCY  
V
IN  
V
IN  
SW  
OUT  
1V TO 1.6V  
V
OUT  
3.3V  
SHDN  
V
OFF ON  
1µF  
1
POWER LOSS  
60mA  
GND  
GND  
10µF  
0.1  
V
V
V
= 3V  
= 2.4V  
= 1.2V  
IN  
IN  
IN  
3525 TA01  
0.01  
1000  
0.01  
0.1  
1
10  
100  
*MURATA LQH32CN100K53  
LOAD (mA)  
LT3525 • TA02  
3525fc  
1
For more information www.linear.com/LTC3525  
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中文翻译

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