LM1117IDT-3.3 NOPB.pdf

Features for the LM1117

For a newer drop-in alternative, see the TLV1117

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

Description for the LM1117

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.