LM1117IMPX-3.3 3.3V Fixed Output 800mA LDO Regulator Low Dropout (1.2V) High Accuracy (±2%) Thermal & Current Protection SOT-223 Package Stable with Ceramic Capacitors

Features

• For a newer drop-in alternative, see the TLV1117

• For drop-in replacements in fixed output SOT-223 package configuration and improved functionality, see the TLV761

• 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

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 V to 13.8 V with only two external resistors. In addition, the device 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. The circuit includes a Zener trimmed band gap 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.

INFORMATION

Drawing

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