Texas Instruments LM1117 Adjustable Voltage Regulator SOT-223 800mA

Texas Instruments LM1117 Adjustable Voltage Regulator provides adjustable output from 1.25V to 13.8V at up to 800mA in a compact SOT-223 surface-mount package.

The LM1117 is a low-dropout voltage regulator designed for applications that require a stable and accurate power supply. It has a dropout voltage of 1.2V at its full 800mA output current, so it can regulate voltage when the input supply is only slightly higher than the desired output. This makes it suitable for battery-powered and energy-sensitive circuits.

Overview

The output voltage is set using only two external resistors, allowing precise adjustment across a range of digital and analogue circuit requirements. The regulator uses the same pin-out as the industry-standard LM317, supporting drop-in replacement and simplified PCB design.

Key Features

• Wide input range of 2.6V to 15V
• Adjustable output from 1.25V to 13.8V
• Maximum output current of 800mA
• Line regulation of 0.2% max and load regulation of 0.4% max
• Output voltage accuracy within ±1%, using a zener-trimmed bandgap reference
• Current limiting and thermal shutdown for protection against overloads and overheating
• Requires a minimum 10µF tantalum capacitor at the output for stability and transient response
• Operating temperature range of -40°C to 125°C

Specifications

• Package: SOT-223-4 surface mount
• Weight: 0.222 g
• Dimensions (width x depth x height): 3.3 x 1.5 x 4.3

Choose the Texas Instruments LM1117 when a dependable, adjustable 800mA regulator is needed for compact surface-mount designs.