LM1117I Overview
800 mA Low-Dropout Linear Regulator LM1117, LM1117I The LM1117 is a low dropout voltage regulator with a dropout of 1.2 V at 800 mA of load current. The LM1117 is available in an adjustable version, which can set the output voltage from 1.25 to 13.8 V with only two external resistors. In addition, it is available in five fixed voltages, 1.8 V, 2.5 V, 3.3 V, and 5.
LM1117I Key Features
- Available in 1.8 V, 2.5 V, 3.3 V, 5.0 V, and Adjustable Versions
- Space-Saving SOT-223 Package
- Current Limiting and Thermal Protection
- Output Current 800 mA
- Line Regulation 0.2% (Maximum)
- Load Regulation 0.4% (Maximum)
- Temperature Range: -40C to 125C
- These are Pb-Free Devices

