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LT3066

更新时间： 2024-09-16 14:58:11
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
26页 1986K
描述
具可编程电流限值和主动输出放电功能的 45V VIN、500mA 低噪声、线性稳压器

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中文翻译

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LT3066 数据手册

 浏览型号LT3066的Datasheet PDF文件第2页浏览型号LT3066的Datasheet PDF文件第3页浏览型号LT3066的Datasheet PDF文件第4页浏览型号LT3066的Datasheet PDF文件第5页浏览型号LT3066的Datasheet PDF文件第6页浏览型号LT3066的Datasheet PDF文件第7页 
LT3066 Series  
45V V , 500mA Low Noise,  
IN  
Linear Regulator with Programmable  
Current Limit and Active Output Discharge  
DESCRIPTION  
FEATURES  
The LT®3066 series are micropower, low noise, low dropout  
voltage (LDO) linear regulators that operate over a 1.6V  
to 45V input voltage range. The devices supply 500mA of  
output current with a typical dropout voltage of 300mV. A  
single external capacitor provides programmable low noise  
reference performance and output soft-start functionality.  
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Input Voltage Range: 1.6V to 45V  
Output Current: 500mA  
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Active Output Discharge  
Dropout Voltage: 300mV  
Programmable Precision Current Limit: 10%  
Power Good Flag  
Input Filtering for High PSRR  
A single external resistor programs the LT3066’s current  
limit, accurate to 10% over a wide input voltage and tem-  
perature range. A PWRGD flag indicates output regulation.  
Low Noise: 25µV  
(10Hz to 100kHz)  
RMS  
Adjustable Output (V = V  
= 600mV)  
REF  
OUT(MIN)  
Output Tolerance: 2% Over Line, Load and Temperature  
Stable with Low ESR, Ceramic Output Capacitors  
(3.3µF Minimum)  
The LT3066 features an NMOS pull-down that discharges  
the output if SHDN or IN is driven low.  
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Single Capacitor Soft-Starts Reference and Lowers  
Output Noise  
The LT3066 optimizes stability and transient response  
with low ESR ceramic capacitors, requiring a minimum of  
3.3µF. Internal protection circuitry includes current limiting  
with foldback, thermal limiting, reverse battery protection,  
reverse current protection and reverse output protection.  
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Current Limit Foldback Protection  
Shutdown Current: <3µA  
Reverse Battery and Thermal Limit Protection  
12-Lead 4mm × 3mm DFN and 12-lead MSOP Packages  
The LT3066 is available in fixed output voltages of 3.3V  
and 5V, and as an adjustable device with an output volt-  
age range from 0.6V to 19V. The device is offered in the  
thermally-enhanced 12-lead 4mm × 3mm DFN and MSOP  
packages.  
APPLICATIONS  
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Battery-Powered Systems  
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Automotive Power Supplies  
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Industrial Power Supplies  
All registered trademarks and trademarks are the property of their respective owners. Protected  
by U.S. Patents, including 8159278.  
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Avionic Power Supplies  
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Portable Instruments  
TYPICAL APPLICATION  
Output Discharge vs VOUT  
CREF/BYP = 1nF  
3.3V Supply with 497mA Precision Current Limit  
IN  
OUT  
IN  
5V  
OUT  
ꢙ.ꢁꢌ  
ꢀ.ꢀꢌ  
3.3V  
10µF  
10µF  
SHDN  
INFILT  
SENSE  
500mA  
500k  
ꢅꢌꢉꢊꢋꢌ  
0.47µF  
22nF  
ꢍ.ꢁꢌ  
ꢅ.ꢍꢌ  
LT3066-3.3  
PWRGD  
SHDNꢘ ꢁ ꢃꢐ ꢍꢌ  
I
REF/BYP  
MAX  
GND  
ꢀꢁꢂꢂ ꢃꢄꢁꢅꢆ  
604Ω  
ꢅꢇꢈꢉꢊꢋꢌ  
1nF  
3066 TA01a  
ꢌ
ꢓ
ꢏ ꢌ  
ꢐꢑꢃ  
ꢒꢅꢌ  
ꢐꢑꢃ  
ꢋꢎ  
ꢏ ꢅꢁꢔꢕ  
ꢋ
ꢏ ꢅꢁꢔꢄ  
ꢕBꢖꢊꢋꢌꢋꢊꢗR  
Rev. B  
1
Document Feedback  
For more information www.analog.com  
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