800-mA linear voltage regulator
DESCRIPTION
The LM1117 is a low dropout voltage regulator with a dropout of 1.2 V at 800 mA of loadcurrent. The LM1117 is available in an adjustable version, which can set the output voltage from1.25 to 13.8 V with only two external resistors. In addition, it is available in five fixedvoltages, 1.8 V, 2.5 V, 3.3 V, and 5 V. The LM1117 offers current limiting and thermal shutdown. Its circuit includes a Zenertrimmed 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 transientresponse 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
• AC drive power stage modules
• Merchant network and server PSU
• Industrial AC/DC
• Ultrasound scanners
• Servo drive control modules
