SNOS412L – MAY 2004 – REVISED JULY 2012
LM1117/LM1117I 800mA Low-Dropout Linear Regulator
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FEATURES
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Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and
Adjustable Versions
Space Saving SOT-223 and LLP Packages
Current Limiting and Thermal Protection
Output Current 800mA
Line Regulation 0.2% (Max)
Load Regulation 0.4% (Max)
Temperature Range
– LM1117: 0°C to 125°C
– LM1117I:
−40°C
to 125°C
APPLICATIONS
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2.85V Model for SCSI-2 Active Termination
Post Regulator for Switching DC/DC Converter
High Efficiency Linear Regulators
Battery Charger
Battery Powered Instrumentation
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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 assure 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.
TYPICAL APPLICATION
Active Terminator for SCSI-2 Bus
Figure 1. Fixed Output Regulator
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright © 2004–2012, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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