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LM1085

更新时间: 2024-02-02 19:56:30
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
13页 742K
描述
3A Low Dropout Positive Regulators

LM1085 技术参数

生命周期:Obsolete包装说明:,
Reach Compliance Code:unknown风险等级:5.82
Base Number Matches:1

LM1085 数据手册

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June 2005  
LM1085  
3A Low Dropout Positive Regulators  
General Description  
Features  
n Available in 3.3V, 5.0V, 12V and Adjustable Versions  
n Current Limiting and Thermal Protection  
n Output Current  
The LM1085 is a series of low dropout positive voltage  
regulators with a maximum dropout of 1.5V at 3A of load  
current. It has the same pin-out as National Semiconductor’s  
industry standard LM317.  
3A  
n Line Regulation  
n Load Regulation  
0.015% (typical)  
0.1% (typical)  
The LM1085 is available in an adjustable version, which can  
set the output voltage with only two external resistors. It is  
also available in three fixed voltages: 3.3V, 5.0V and 12.0V.  
The fixed versions integrate the adjust resistors.  
Applications  
n High Efficiency Linear Regulators  
n Battery Charger  
The LM1085 circuit includes a zener trimmed bandgap ref-  
erence, current limiting and thermal shutdown.  
n Post Regulation for Switching Supplies  
n Constant Current Regulator  
n Microprocessor Supply  
The LM1085 series is available in TO-220 and TO-263 pack-  
ages. Refer to the LM1084 for the 5A version, and the  
LM1086 for the 1.5A version.  
Connection Diagrams  
Application Circuit  
TO-220  
10094702  
Top View  
TO-263  
10094752  
1.2V to 15V Adjustable Regulator  
10094704  
Top View  
Basic Functional Diagram,  
Adjustable Version  
10094765  
© 2005 National Semiconductor Corporation  
DS100947  
www.national.com  

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