TILM1117IMPX-5.0/NOPB

Overview

The LM1117IMPX-5.0/NOPB is a low-dropout linear regulator providing a fixed 5V output at up to 800mA. It features a zener-trimmed band-gap reference to ensure high output accuracy and includes internal current limiting and thermal shutdown protection. This SOT-223 packaged device is designed for stability with tantalum capacitors and maintains a high Power Supply Rejection Ratio (PSRR) of 75dB.

Why Choose This Part

The regulator offers a high 75dB PSRR at 120Hz, making it effective at filtering ripple in power sensitive designs. Its SOT-223 footprint provides a balance between compact size and the thermal performance necessary to handle up to 800mA. Integrated thermal and over-current protection ensures robust operation across its 0C to 125C temperature range.

Applications

Getting Started

When designing with this LDO, ensure a minimum of 10uF tantalum capacitor is placed on the output for stability. Layout the SOT-223 package with sufficient copper pour on the Tab (Pin 4) to manage heat dissipation, as the thermal resistance is highly dependent on PCB area. Verify that the input voltage does not exceed the 15V maximum rating to avoid device damage.

LM1117IMPX Family

Comparing specs that differ across variants. The current part is highlighted.

Also Consider

LD1117S50TR STMicroelectronics - A widely available 1117-series alternative in the same SOT-223 package with similar 800mA current capability.

AMS1117-5.0 Advanced Monolithic Systems - Commonly used in low-cost prototyping and hobbyist modules with compatible footprints.

Categories