AMS1117-5.0
Overview
The AMS1117-5.0 is a low dropout (LDO) linear voltage regulator designed to provide a fixed 5V output at up to 1A of load current. It features a typical dropout voltage of 1.2V at maximum load, making it suitable for efficient regulation from low-voltage input rails. The device includes integrated thermal shutdown and current limiting circuitry to ensure system reliability during fault conditions.
Why Choose This Part
The primary advantage of the AMS1117-5.0 is its ability to deliver up to 1A of current in a small surface-mount package with high precision (0.5 percent accuracy). It offers a balance of simplicity and protection features like thermal shutdown, making it more robust than standard 7805-series regulators in space-constrained designs.
Applications
Key Specifications
Getting Started
When integrating the AMS1117-5.0, ensure that a minimum of 22uF tantalum capacitor is placed at the output to maintain stability across all load conditions. The device requires an input voltage at least 1.2V higher than the 5V output for proper regulation. For high-current applications, prioritize PCB copper pour areas around the SOT-223 tab to facilitate heat dissipation.
Also Consider
STMicroelectronics
- Offers a similar 1.2V dropout voltage and 800mA to 1A output capability in an SOT-223 package.
