LM1117 800-mA Low-Dropout Linear Regulator

LM1117 800-mA Low-Dropout Linear Regulator

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 V.
The LM1117 offers current limiting and thermal shutdown. Its circuit includes a Zener trimmed bandgap reference to assure output voltage accuracy to within ±1%.
A minimum of 10-μF tantalum capacitor is required at the output to improve the transient response and stability.
 

Features

  • Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and Adjustable Versions
  • Space-Saving SOT-223 and WSON Packages
  • Current Limiting and Thermal Protection
  • Output Current 800 mA
  • Line Regulation 0.2% (Maximum)
  • Load Regulation 0.4% (Maximum)
  • Temperature Range
  • LM1117: 0°C to 125°C
  • LM1117I: −40°C to 125°C

Applications

  • Post Regulator for Switching DC–DC Converter
  • High Efficiency Linear Regulators
  • Battery Chargers
  • Portable Instrumentation
  • Active SCSI Termination Regulator