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LT3467A PDF预览

LT3467A

更新时间: 2024-11-05 14:57:59
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
18页 2241K
描述
具集成软起动功能的 1.1A 升压型 DC/DC 转换器

LT3467A 数据手册

 浏览型号LT3467A的Datasheet PDF文件第2页浏览型号LT3467A的Datasheet PDF文件第3页浏览型号LT3467A的Datasheet PDF文件第4页浏览型号LT3467A的Datasheet PDF文件第5页浏览型号LT3467A的Datasheet PDF文件第6页浏览型号LT3467A的Datasheet PDF文件第7页 
LT3467/LT3467A  
1.1A Step-Up DC/DC  
Converter with Integrated Soft-Start  
FEATURES  
DESCRIPTION  
The LT®3467/LT3467A switching regulators combine a  
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1.3MHz Switching Frequency (LT3467)  
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2.1MHz Switching Frequency (LT3467A)  
42V, 1.1A switch with a soft-start function. Pin compatible  
with the LT1930, its low VCESAT bipolar switch enables the  
device to deliver high current outputs in a small footprint.  
The LT3467 switches at 1.3MHz, allowing the use of tiny,  
low cost and low height inductors and capacitors. The  
LT3467A switches at 2.1MHz, allowing the use of even  
smaller components. High inrush current at start-up is  
eliminated using the programmable soft-start function.  
A single external capacitor sets the current ramp rate.  
A constant frequency current mode PWM architecture  
results in low, predictable output noise that is easy to filter.  
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Low V  
Switch: 330mV at 1.1A  
CESAT  
High Output Voltage: Up to 40V  
Wide Input Range: 2.4V to 16V  
Dedicated Soft-Start Pin  
5V at 540mA from 3.3V Input (LT3467)  
5V at 430mA from 3.3V Input (LT3467A)  
12V at 270mA from 5V Input (LT3467)  
12V at 260mA from 5V Input (LT3467A)  
Uses Small Surface Mount Components  
Low Shutdown Current: <1µA  
Pin-for-Pin Compatible with the LT1930 and LT1613  
Low Profile (1mm) ThinSOT Package  
Low Profile (0.75mm) 8-Lead (3mm × 2mm)  
DFN Package  
AEC-Q100 Qualified for Automotive Applications  
The high voltage switch on the LT3467/LT3467A is rated  
at 42V, making the devices ideal for boost converters up  
to 40V as well as SEPIC and flyback designs. The LT3467  
can generate 5V at up to 540mA from a 3.3V supply or 5V  
at 450mA from four alkaline cells in a SEPIC design. The  
LT3467A can generate 5V at up to 430mA from a 3.3V  
supply or 15V at 135mA from a 3.3V supply. The LT3467/  
LT3467A are available in a low profile (1mm) 6-lead  
SOT-23 package and tiny 3mm × 2mm DFN package.  
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APPLICATIONS  
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Digital Cameras  
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White LED Power Supplies  
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Cellular Phones  
All registered trademarks and trademarks are the property of their respective owners.  
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Medical Diagnostic Equipment  
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Local 5V or 12V Supplies  
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TFT-LCD Bias Supplies  
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xDSL Power Supplies  
TYPICAL APPLICATION  
Efficiency  
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Single Li-Ion Cell to 5V Boost Converter  
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ꢗꢍꢐꢚꢔ ꢔꢋ ꢃ ꢛ ꢓ.ꢓ ꢜ  
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ꢓꢊꢐꢚꢔ ꢔꢋ ꢃ ꢛ ꢉ.ꢊꢃ  
ꢅꢆ  
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SHDN  
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Rev. H  
1
Document Feedback  
For more information www.analog.com  

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