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LT1307IS8#TRPBF

更新时间： 2024-09-09 13:09:35
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凌特 - Linear 转换器
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LT1307IS8#TRPBF 数据手册

 浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第2页浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第3页浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第4页浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第5页浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第6页浏览型号LT1307IS8#TRPBF的Datasheet PDF文件第7页 
LT1307/ LT1307B  
Sing le Ce ll Mic ro p o we r  
600kHz PWM DC/ DC Co nve rte rs  
U
DESCRIPTION  
FEATURES  
The LT®1307/LT1307B are micropower, fixed frequency  
DC/DC converters that operate from an input voltage as  
low as 1V. First in the industry to achieve true current  
mode PWM performance from a single cell supply, the  
LT1307 features automatic shifting to power saving Burst  
Mode operation at light loads. High efficiency is main-  
tained over a broad 100µA to 100mA load range. The  
LT1307B does not shift into Burst Mode operation at light  
loads, eliminating low frequency output ripple at the  
expenseoflightloadefficiency. Thedevices containalow-  
battery detector with a 200mV reference and shut down to  
less than 5µA. No load quiescent current of the LT1307 is  
50µAandtheinternalNPNpowerswitchhandles a500mA  
current with a voltage drop of just 295mV.  
■
Uses Small Ceramic Capacitors  
50µA Quiescent Current (LT1307)  
1mA Quiescent Current (LT1307B)  
Operates with V as Low as 1V  
■
■
■
IN  
■
■
■
■
■
■
600kHz Fixed Frequency Operation  
Starts into Full Load  
Low Shutdown Current: 3µA  
Low-Battery Detector  
3.3V at 75mA from a Single Cell  
Automatic Burst ModeTM Operation at  
Light Load (LT1307)  
■
■
Continuous Switching at Light Load (LT1307B)  
Low VCESAT Switch: 295mV at 500mA  
U
Unlike competitive devices, large electrolytic capacitors  
are not required with the LT1307/LT1307B in single cell  
applications. The high frequency (600kHz) switching al-  
lows the use of tiny surface mount multilayer ceramic  
(MLC) capacitors along with small surface mount induc-  
tors. The devices work with just 10µF of output capaci-  
tance and require only 1µF of input bypassing.  
APPLICATIONS  
■
Pagers  
Cordless Telephones  
GPS Receivers  
Battery Backup  
Portable Electronic Equipment  
Glucose Meters  
Diagnostic Medical Instrumentation  
■
■
■
■
■
The LT1307/LT1307B are available in 8-lead MSOP, PDIP  
and SO packages.  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Single Cell to 3.3V Converter Efficiency  
L1  
10µH  
D1  
90  
C1: MURATA-ERIE GRM235Y5V105Z01  
MARCON THCS50E1E105Z  
V
SW  
FB  
IN  
TOKIN 1E105ZY5U-C103-F  
C2: MURATA-ERIE GRM235Y5V106Z01  
C1  
1µF  
3.3V  
75mA  
80  
LBI  
V
IN  
= 1.5V  
V
MARCON THCS50E1E105Z  
TOKIN 1E106ZY5U-C304-F  
R1  
1.02M  
1%  
LT1307  
1.5V  
CELL  
SHUTDOWN SHDN  
LBO  
GND  
= 1V  
D1: MOTOROLA MBR0520L  
L1: COILCRAFT D01608C-103  
SUMIDA CD43-100  
IN  
V
C
C2  
10µF  
70  
60  
50  
V
IN  
= 1.25V  
R2  
604k  
1%  
100k  
680pF  
MURATA ERIE LQH3C100  
FOR 5V OUTPUT: R1 = 1M, R2 = 329k  
1307 F01  
0.1  
1
10  
100  
Figure 1. Single Cell to 3.3V Boost Converter  
LOAD CURRENT (mA)  
1307 TA01  
1
1234567...20

中文翻译

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LT1307IS8#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1307IS8#PBF Linear

完全替代

 LT1307 - Single Cell Micropower 600kHz PWM DC/DC Converters; Package: SO; Pins: 8; Tempera
LT1307IS8 Linear

类似代替

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