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LT1424-9

更新时间： 2024-09-28 22:51:51
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
16页 144K
描述
Isolated Flyback Switching Regulator with 9V Output

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中文翻译

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LT1424-9 数据手册

 浏览型号LT1424-9的Datasheet PDF文件第2页浏览型号LT1424-9的Datasheet PDF文件第3页浏览型号LT1424-9的Datasheet PDF文件第4页浏览型号LT1424-9的Datasheet PDF文件第5页浏览型号LT1424-9的Datasheet PDF文件第6页浏览型号LT1424-9的Datasheet PDF文件第7页 
LT1424-9  
Isolated Flyback  
Switching Regulator  
with 9V Output  
U
FEATURES  
DESCRIPTIO  
The LT®1424-9 is a monolithic high power switching  
regulator specifically designed for the isolated flyback  
topology. No “third winding” or optoisolator is required;  
the integrated circuit senses the isolated output voltage  
directly from the primary side flyback waveform. A high  
current, high efficiency switch is included on the die along  
with all oscillator, control and protection circuitry.  
■
No Transformer “Third Winding” or Optoisolator  
Required  
■
Application Circuit Meets PCMCIA Type II  
Height Requirement  
■
Fixed, Application Specific 9V Output Voltage  
■
Regulation Maintained Well into Discontinuous  
Mode (Light Load)  
■
Load Compensation Provides Excellent  
The LT1424-9 operates with input supply voltages from  
3V to 20V and draws only 7mA quiescent current. It can  
deliver up to 200mA at 9V with no external power devices.  
By utilizing current mode switching techniques, it pro-  
vides excellent AC and DC line regulation.  
Load Regulation  
■
Available in 8-Pin PDIP and SO Packages  
■
Operating Frequency: 285kHz  
U
APPLICATIO S  
TheLT1424-9hasanumberoffeaturesnotfoundonother  
switching regulator ICs. Its unique control circuitry can  
maintain regulation well into discontinuous mode. Load  
compensation circuitry allows for improved load regula-  
tion. An externally activated shutdown mode reduces total  
supply current to 20µA typical for standby operation.  
■
Ethernet Isolated 5V to –9V Converter  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
–9V PCMCIA Type II Isolated LAN Supply  
(2.41mm Maximum Component Height)  
C6  
220pF  
ISOLATION  
BARRIER  
R2  
75Ω  
5V  
MBRS130LT3  
C1  
10µF  
25V  
R1  
D1  
C2  
10µF  
25V  
OUT  
0.1µF  
75Ω  
1N5248  
C5  
220pF  
COM  
1
3
LT1424-9  
C3  
C4  
10µF  
25V  
1.8k  
2
1
3
4
8
7
6
5
10µF  
T1  
D2  
MBR0540T4  
V
R
CCOMP  
C
25V  
SHDN  
SYNC  
SGND  
V
IN  
2
4
100k  
1000pF  
–9V  
200mA  
V
47pF  
SW  
1424 TA01  
1:1  
C1, C2, C3, C4: MARCON THCS50E1E106Z CERAMIC  
PGND  
0.1µF  
INPUT  
COM  
CAPACITOR, SIZE 1812. (847) 696-2000  
T1: COILTRONICS CTX02-13483  
1
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