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1117-18 PDF Datasheet浏览和下载

型号.:
1117-18
PDF下载:
下载PDF文件
内容描述:
800毫安低压差线性稳压器
[800mA Low-Dropout Linear Regulator]
文件大小:
532 K
文件页数:
21 Pages
品牌Logo:
品牌名称:
NSC [ NATIONAL SEMICONDUCTOR ]
PCB Prototype
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LM1117/LM1117I 800mA Low-Dropout Linear Regulator
June 2004
LM1117/LM1117I
800mA Low-Dropout Linear Regulator
General Description
The LM1117 is a series of low dropout voltage regulators
with a dropout of 1.2V at 800mA of load current. It has the
same pin-out as National Semiconductor’s industry standard
LM317.
The LM1117 is available in an adjustable version, which can
set the output voltage from 1.25V to 13.8V with only two
external resistors. In addition, it is also available in five fixed
voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V.
The LM1117 offers current limiting and thermal shutdown. Its
circuit includes a zener trimmed bandgap reference to as-
sure output voltage accuracy to within
±
1%.
The LM1117 series is available in LLP, TO-263, SOT-223,
TO-220, and TO-252 D-PAK packages. A minimum of 10µF
tantalum capacitor is required at the output to improve the
transient response and stability.
Features
n
Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable
Versions
n
Space Saving SOT-223 and LLP Packages
n
Current Limiting and Thermal Protection
n
Output Current
800mA
n
Line Regulation
0.2% (Max)
n
Load Regulation
0.4% (Max)
n
Temperature Range
— LM1117
0˚C to 125˚C
— LM1117I
−40˚C to 125˚C
Applications
n
n
n
n
n
2.85V Model for SCSI-2 Active Termination
Post Regulator for Switching DC/DC Converter
High Efficiency Linear Regulators
Battery Charger
Battery Powered Instrumentation
Typical Application
Active Terminator for SCSI-2 Bus
10091905
Fixed Output Regulator
10091928
© 2004 National Semiconductor Corporation
DS100919
www.national.com