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LT1304-5_15 PDF预览

LT1304-5_15

更新时间： 2024-01-31 00:25:45
品牌 Logo 应用领域
凌特 - Linear 电池
页数 文件大小 规格书
16页 309K
描述
Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown

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中文翻译

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LT1304-5_15 数据手册

 浏览型号LT1304-5_15的Datasheet PDF文件第2页浏览型号LT1304-5_15的Datasheet PDF文件第3页浏览型号LT1304-5_15的Datasheet PDF文件第4页浏览型号LT1304-5_15的Datasheet PDF文件第5页浏览型号LT1304-5_15的Datasheet PDF文件第6页浏览型号LT1304-5_15的Datasheet PDF文件第7页 
LT1304/LT1304-3.3/LT1304-5  
Micropower  
DC/DC Converters with  
Low-Battery Detector  
Active in Shutdown  
U
DESCRIPTION  
FEATURES  
The LT®1304 is a micropower step-up DC/DC converter  
ideal for use in small, low voltage, battery-operated sys-  
tems. The devices operate from a wide input supply range  
of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate  
regulated outputs of 3.3V and 5V and the adjustable  
LT1304 can deliver output voltages up to 25V. Quiescent  
current, 120µA in active mode, decreases to just 10µA in  
shutdown with the low-battery detector still active. Peak  
switch current, internally set at 1A, can be reduced by  
adding a single resistor from the ILIM pin to ground. The  
high speed operation of the LT1304 allows the use of  
small, surface-mountable inductors and capacitors. The  
LT1304 is available in an 8-lead SO package.  
■
5V at 200mA from Two Cells  
■
10µA Quiescent Current in Shutdown  
■
Operates with VIN as Low as 1.5V  
■
Low-Battery Detector Active in Shutdown  
■
Low Switch VCESAT: 370mV at 1A Typical  
■
120µA Quiescent Current in Active Mode  
■
Switching Frequency Up to 300kHz  
■
Programmable Peak Current with One Resistor  
8-Lead SO Package  
■
U
APPLICATIONS  
■
2-, 3-, or 4-Cell to 5V or 3.3V Step-Up  
■
Portable Instruments  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Bar Code Scanners  
■
Palmtop Computers  
■
Diagnostic Medical Instrumentation  
Personal Data Communicators/Computers  
■
U
TYPICAL APPLICATION  
2-Cell to 5V Step-Up Converter with Low-Battery Detect  
Efficiency  
D1**  
22µH*  
90  
80  
3
4
499k  
V
SW  
SENSE  
LT1304-5  
IN  
8
2
1
6
5V  
LBI  
200mA  
+
+
100k  
100µF  
70  
60  
50  
40  
100µF  
2 CELLS  
604k  
NC  
LBO  
I
LBO  
GND  
5
LIM  
LOW WHEN  
SHDN  
7
V
BAT  
< 2.2V  
V
IN  
V
IN  
V
IN  
= 3.3V  
= 2.5V  
= 1.8V  
SHUTDOWN  
*SUMIDA CD54-220  
**1N5817  
1304 TA01  
0.1  
1
10  
100  
500  
LOAD CURRENT (mA)  
1304 TA02  
1
1234567...16

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