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LT1085MK-12 PDF预览

LT1085MK-12

更新时间: 2024-11-26 05:43:23
品牌 Logo 应用领域
Linear Systems 稳压器调节器输出元件局域网
页数 文件大小 规格书
12页 138K
描述
3A, 5A, 7.5A Low Dropout Positive Fixed Regulators

LT1085MK-12 数据手册

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LT1083/LT1084/LT1085 Fixed  
3A, 5A, 7.5A Low Dropout  
Positive Fixed Regulators  
U
FEATURES  
DESCRIPTIO  
The LT®1083 series of positive adjustable regulators are  
designedtoprovide3A, 5Aand7.5Awithhigherefficiency  
than currently available devices. All internal circuitry is  
Three-Terminal 3.3V, 3.6V, 5V and 12V  
Output Current of 3A, 5A or 7.5A  
Operates Down to 1V Dropout  
Guaranteed Dropout Voltage at Multiple Current Levels designedtooperatedownto1Vinputtooutputdifferential  
Line Regulation: 0.015%  
and the dropout voltage is fully specified as a function of  
load current. Dropout is guaranteed at a maximum of 1.5V  
at maximum output current, decreasing at lower load  
currents. On-chip trimming adjusts the output voltage to  
1%. Current limit is also trimmed, minimizing the stress  
on both the regulator and power source circuitry under  
overload conditions.  
Load Regulation: 0.1%  
100% Thermal Limit Functional Test  
Adjustable Versions Available  
U
APPLICATIO S  
High Efficiency Linear Regulators  
The LT1083 series devices are pin compatible with older  
three-terminal regulators. A 10μF output capacitor is  
required on these new devices; however, this is usually  
included in most regulator designs.  
Post Regulators for Switching Supplies  
Constant Current Regulators  
Battery Chargers  
DEVICE  
OUTPUT CURRENT*  
Unlike PNP regulators, where up to 10% of the output  
current is wasted as quiescent current, the LT1083 quies-  
cent current flows into the load, increasing efficiency.  
LT1083  
LT1084  
LT1085  
7.5 Amps  
5.0 Amps  
3.0 Amps  
*For a 1.5A low dropout regulator see the LT1086 data sheet.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
5V, 7.5A Regulator  
Dropout Voltage vs Output Current  
2
V
6.5V  
5V AT 7.5A  
LT1083-5  
IN  
+
+
22μF*  
TANTALUM  
10μF  
LT1083/4/5 TA01  
1
0
*REQUIRED FOR STABILITY  
0
I
/2  
I
FULLLOAD  
FULLLOAD  
OUTPUT CURRENT (A)  
1083/4/5 TA02  
1083ffd  
1

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