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LT1303CS8#PBF

更新时间： 2024-10-02 13:09:35
品牌 Logo 应用领域
凌特 - Linear 转换器电池开关光电二极管
页数 文件大小 规格书
12页 281K
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 浏览型号LT1303CS8#PBF的Datasheet PDF文件第2页浏览型号LT1303CS8#PBF的Datasheet PDF文件第3页浏览型号LT1303CS8#PBF的Datasheet PDF文件第4页浏览型号LT1303CS8#PBF的Datasheet PDF文件第5页浏览型号LT1303CS8#PBF的Datasheet PDF文件第6页浏览型号LT1303CS8#PBF的Datasheet PDF文件第7页 
LT1303/LT1303-5  
Micropower High Efficiency  
DC/DC Converters with  
Low-Battery Detector  
Adjustable and Fixed 5V  
U
DESCRIPTION  
FEATURES  
The LT®1303/LT1303-5 are micropower step-up high  
efficiency DC/DC converters using Burst ModeTM opera-  
tion. They are ideal for use in small, low-voltage battery-  
operated systems. The LT1303-5 accepts an input voltage  
between1.8Vand5Vandconvertsittoaregulated5V. The  
LT1303 is an adjustable version that can supply an output  
voltage up to 25V. Quiescent current is only 120µA from  
the battery and the shutdown pin further reduces current  
to 10µA. The low-battery detector provides an open-  
collector output that goes low when the input voltage  
drops below a preset level. The on-chip NPN power switch  
has a low 170mV saturation voltage at a switch current  
of 1A. The LT1303/LT1303-5 are available in 8-lead PDIP  
or SO packages, easing board space requirements.  
■
5V at 200mA from a 2V Input  
■
Supply Voltage As Low As 1.8V  
■
Up to 88% Efficiency  
120µA Quiescent Current  
Low-Battery Detector  
Low VCESAT Switch: 170mV at 1A Typ  
Uses Inexpensive Surface Mount Inductors  
8-Lead PDIP or SO Package  
■
■
■
■
■
U
APPLICATIONS  
■
EL Panel Drivers  
■
2-Cell and 3-Cell to 5V Conversion  
■
Palmtop Computers  
■
Portable Instruments  
For higher output current, please see the LT1305 or  
LT1302.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
Bar-Code Scanners  
■
PDAs  
■
Wireless Systems  
U
TYPICAL APPLICATION  
5V Output Efficiency  
L1  
22µH  
1N5817  
90  
V
= 4V  
IN  
316k  
80  
70  
60  
50  
40  
30  
1%  
V
SW  
IN  
V
= 2V  
IN  
V = 2.5V  
IN  
V
, 5V  
OUT  
LBI  
SENSE  
200mA  
+
V
= 3V  
IN  
412k  
1%  
LT1303-5  
100µF  
2 CELLS  
100k  
LOW BATTERY  
GOES LOW AT  
V
SHUTDOWN  
SHDN  
GND  
LBO  
PGND  
= 2.2V  
+
BAT  
100µF  
L1 = SUMDIA CD54-220  
LT1303 TA02  
0.1  
1
10  
100  
1000  
Figure 1. 2-Cell to 5V DC/DC Converter with Low-Battery Detect  
LOAD CURRENT (mA)  
LT1303 TA01  
1
1234567...12

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LT1303CS8#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1303CS8#TRPBF Linear

类似代替

 LT1303 - Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable
LT1303CS8 Linear

类似代替

 Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable and Fixed
LT1303CS8#TR Linear

功能相似

 LT1303 - Micropower High Efficiency DC/DC Converters with Low-Battery Detector Adjustable

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LT1303CS8-5#TRPBF Linear

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