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LTC3525L-3 PDF预览

LTC3525L-3

更新时间： 2023-12-20 18:45:10
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
12页 491K
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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LTC3525L-3 数据手册

 浏览型号LTC3525L-3的Datasheet PDF文件第2页浏览型号LTC3525L-3的Datasheet PDF文件第3页浏览型号LTC3525L-3的Datasheet PDF文件第4页浏览型号LTC3525L-3的Datasheet PDF文件第5页浏览型号LTC3525L-3的Datasheet PDF文件第6页浏览型号LTC3525L-3的Datasheet PDF文件第7页 
LTC3525L-3  
400mA Micropower  
Synchronous Step-Up DC/DC  
Converter with Output Disconnect  
FEATURES  
DESCRIPTION  
The LTC®3525L-3 is a high efficiency synchronous step-  
up DC/DC converter with output disconnect that can  
start up with an input as low as 0.7V. It offers a compact,  
high efficiency alternative to charge pumps in single  
n
Start-Up at 0.7V Typical, 0.88V Guaranteed  
n
Up to 95% Efficiency  
n
Output Disconnect and Inrush Current Limit  
3V Fixed Output Voltage  
n
n
Delivers 65mA at 3V from a 1V Input or 160mA  
from a 1.8V Input  
cell or dual cell alkaline applications. Only three small  
external components are required. The LTC3525L-3  
generates a fixed 3V output voltage.  
Burst Mode® Operation: I = 7µA  
n
n
n
n
n
n
n
n
Q
V : 0.5V to 4.5V  
IN  
The device includes a 0.5 N-channel MOSFET switch  
and a 0.85 P-channel synchronous rectifier. Peak switch  
current ranges from 150mA to 400mA, depending on  
load, 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  
Anti-Ringing Control  
Short-Circuit and Overtemperature Protection  
Tiny 6-Pin SC70 Package  
Other features include <1µA shutdown current, anti-  
ringing control and thermal shutdown. The LTC3525L-3  
is available in a tiny 6-pin SC70 package.  
APPLICATIONS  
n
MP3 Players  
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.  
n
Portable Instruments  
n
Glucose Meters  
Digital Cameras  
n
TYPICAL APPLICATION  
LTC3525L-3 Efficiency and Power  
Loss vs Load Current  
100  
90  
80  
70  
60  
50  
40  
30  
20  
100  
10  
L1*  
10µH  
LTC3525L-3  
EFFICIENCY  
V
IN  
V
SW  
OUT  
IN  
0.9V TO 1.6V  
V
OUT  
1
3V  
SHDN  
V
OFF ON  
1µF  
POWER LOSS  
65mA  
GND  
GND  
10µF  
0.1  
V
V
= 2.4V  
= 1.2V  
IN  
IN  
3525 TA01  
*MURATA LQH32CN100K53  
0.01  
1000  
0.01  
0.1  
1
10  
100  
LOAD (mA)  
LT3525 • TA02  
3525lfa  
1
1234567...12

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