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LTC3637_15

更新时间： 2024-11-24 01:16:59
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
26页 357K
描述
76V, 1A Step-Down Regulator

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中文翻译

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LTC3637_15 数据手册

 浏览型号LTC3637_15的Datasheet PDF文件第2页浏览型号LTC3637_15的Datasheet PDF文件第3页浏览型号LTC3637_15的Datasheet PDF文件第4页浏览型号LTC3637_15的Datasheet PDF文件第5页浏览型号LTC3637_15的Datasheet PDF文件第6页浏览型号LTC3637_15的Datasheet PDF文件第7页 
LTC3637  
76V, 1A Step-Down  
Regulator  
FEATURES  
DESCRIPTION  
The LTC®3637 is a high efficiency step-down DC/DC  
regulator with an internal high side power switch that  
draws only 12μA DC supply current while maintaining a  
regulated output voltage at no load.  
n
Wide Operating Input Voltage Range: 4V to 76V  
n
Internal 350mΩ Power MOSFET  
n
No Compensation Required  
Adjustable 100mA to 1A Maximum Output Current  
Low Dropout Operation: 100% Duty Cycle  
Low Quiescent Current: 12µA  
Wide Output Range: 0.8V to V  
n
n
TheLTC3637cansupplyupto1Aloadcurrentandfeatures  
a programmable peak current limit that provides a simple  
method for optimizing efficiency and for reducing output  
ripple and component size. The LTC3637’s combination  
of Burst Mode® operation, integrated power switch, low  
quiescent current, and programmable peak current limit  
provideshighefficiencyoverabroadrangeofloadcurrents.  
n
n
IN  
n
n
n
n
n
n
n
0.8V 1% Feedback Voltage Reference  
Precise RUN Pin Threshold  
Internal and External Soft-Start  
Programmable 1.8V, 3.3V, 5V or Adjustable Output  
Few External Components Required  
Programmable Input Overvoltage Lockout  
Low Profile (0.75mm) 3mm × 5mm DFN and  
Thermally-Enhanced MSE16 Packages  
With its wide input range of 4V to 76V, and programmable  
overvoltage lockout, the LTC3637 is a robust regulator  
suitedforregulatingfromawidevarietyofpowersources.  
Additionally, theLTC3637 includesaprecise runthreshold  
and soft-start feature to guarantee that the power system  
start-up is well-controlled in any environment.  
APPLICATIONS  
n
Industrial Control Supplies  
The LTC3637 is available in the thermally-enhanced  
3mm × 5mm DFN and the MSE16 packages.  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
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Medical Devices  
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Distributed Power Systems  
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Portable Instruments  
n
Battery-Operated Devices  
n
Automotive  
Avionics  
n
TYPICAL APPLICATION  
Efficiency and Power Loss vs Load Current  
100  
12.5V to 76V Input to 12V Output, 1A Regulator  
V
= 12V  
OUT  
EFFICIENCY  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10µH  
V
12V  
1A  
OUT  
V
IN  
V
SW  
LTC3637  
IN  
12.5V TO 76V  
47µF  
2.2µF  
200k  
1000  
100  
10  
RUN  
V
FB  
SS  
PRG1  
PRG2  
35.7k  
POWER LOSS  
FBO  
V
V
OVLO  
I
SET  
V
V
V
= 24V  
= 48V  
= 76V  
IN  
IN  
IN  
GND  
3637 TA01a  
0
0.1  
1.0  
10  
100  
1000  
LOAD CURRENT (mA)  
3637 TA01b  
3637fa  
1
For more information www.linear.com/LTC3637  
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