lm1117t-3.3 voltage regulator 3.3v

Description

1 Features
1• 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
2 Applications
• AC drive power stage modules
• Merchant network and server PSU
• Industrial AC/DC
• Ultrasound scanners
• Servo drive control modules
3 Description
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.