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LT3071MPUFD#PBF

更新时间： 2024-09-15 13:09:39
品牌 Logo 应用领域
凌特 - Linear 稳压器电阻器
页数 文件大小 规格书
28页 256K
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LT3071MPUFD#PBF 数据手册

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LT3083  
Adjustable 3A  
Single Resistor Low  
Dropout Regulator  
FEATURES  
DESCRIPTION  
n
Outputs May be Paralleled for Higher Current and  
The LT®3083 is a 3A low dropout linear regulator that can  
be paralleled to increase output current or spread heat on  
surfacemountedboards.Architectedasaprecisioncurrent  
source and voltage follower, this new regulator finds use  
in many applications requiring high current, adjustability  
to zero, and no heat sink. The device also brings out the  
collectorofthepasstransistortoallowlowdropoutopera-  
tion—downto310mV—whenusedwithmultiplesupplies.  
Heat Spreading  
n
Output Current: 3A  
n
Single Resistor Programs Output Voltage  
50μA Set Pin Current: 1% Initial Accuracy  
Output Adjustable to 0V  
Low Output Noise: 40μV  
n
n
n
(10Hz to 100kHz)  
RMS  
n
Wide Input Voltage Range: 1.2V to 23V  
(DD-Pak and TO-220 Packages)  
Low Dropout Voltage: 310mV  
A key feature of the LT3083 is the capability to supply a  
wide output voltage range. By using a reference current  
throughasingleresistor,theoutputvoltageisprogrammed  
to any level between zero and 23V (DD-PAK and TO-220  
packages). The LT3083 is stable with 10μF of capacitance  
on the output, and the IC is stable with small ceramic ca-  
pacitors that do not require additional ESR as is common  
with other regulators.  
n
n
n
n
n
n
<1mV Load Regulation  
<0.001%/V Line Regulation  
Minimum Load Current: 1mA  
Stable with Minimum 10μF Ceramic Capacitor  
Current Limit with Foldback and Overtemperature  
Protection  
n
Available in 16-Lead TSSOP, 12-Lead 4mm × 4mm  
DFN, 5-Lead TO-220 and 5-Lead Surface Mount  
DD-PAK Packages  
Internal protection circuitry includes current limiting and  
thermal limiting. The LT3083 is offered in the 16-lead  
TSSOP (with an exposed pad for better thermal character-  
istics), 12-lead 4mm × 4mm DFN (also with an exposed  
pad), 5-lead TO-220, and 5-lead surface mount DD-PAK  
packages.  
APPLICATIONS  
n
High Current All Surface Mount Supply  
n
High Efficiency Linear Regulator  
n
Post Regulator for Switching Supplies  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
n
Low Parts Count Variable Voltage Supply  
n
Low Output Voltage Power Supplies  
TYPICAL APPLICATION  
Set Pin Current Distribution  
1.5V to 0.9V at 3A Supply (Using 3.3V VCONTROL  
)
N = 1052  
V
CONTROL  
3.3V  
4.7μF  
10μF  
V
CONTROL  
V
= 0.9V  
= 3A  
LT3083  
V
OUT  
MAX  
IN  
IN  
OUT  
I
1.5V  
*
10μF  
SET  
R
MIN  
909Ω  
3083 TA01a  
*OPTIONAL FOR  
MINIMUM 1mA LOAD  
REQUIREMENT  
R
18.2k  
1%  
SET  
0.1μF  
49  
49.5  
50  
50.5  
51  
SET PIN CURRENT DISTRIBUTION (μA)  
3083 TA01b  
3083f  
1
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LT3071MPUFD#PBF 替代型号

型号 品牌 替代类型 描述 数据表
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