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LM1117MPX-3.3 fiches techniques PDF

National Semiconductor - 800mA Low-Dropout Linear Regulator

Numéro de référence LM1117MPX-3.3
Description 800mA Low-Dropout Linear Regulator
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM1117MPX-3.3 fiche technique
February 2000
LM1117
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 ex-
ternal 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 SOT-223, TO-220, and
TO-252 D-PAK packages. A minimum of 10µF tantalum ca-
pacitor is required at the output to improve the transient re-
sponse and stability.
Features
n Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable
Versions
n Space Saving SOT-223 Package
n Current Limiting and Thermal Protection
n Output Current
n Temperature Range
n Line Regulation
n Load Regulation
800mA
0˚C to 125˚C
0.2% (Max)
0.4% (Max)
Applications
n 2.85V Model for SCSI-2 Active Termination
n Post Regulator for Switching DC/DC Converter
n High Efficiency Linear Regulators
n Battery Charger
n Battery Powered Instrumentation
Typical Application
Active Terminator for SCSI-2 Bus
Fixed Output Regulator
DS100919-5
DS100919-28
© 2000 National Semiconductor Corporation DS100919
www.national.com

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