LD1117V50

Overview

The LD1117V50C is a positive fixed linear voltage regulator from the STMicroelectronics LD1117 series, housed in a TO-220 package. It provides a fixed 5V output with a maximum current of 800mA and a maximum input voltage of 15V. The device features a typical dropout voltage of 1.3V at full load and includes internal overcurrent and thermal shutdown protections.

Feature Summary

• Provides stable fixed 5V output for low-noise power supply applications
• Includes built-in thermal shutdown and current limiting protection mechanisms
• Designed for high efficiency with low quiescent current consumption

Applications

• General purpose linear power supplies
• Battery-powered systems requiring efficient voltage regulation
• Communication equipment power distribution
• Industrial instrumentation power circuits

Procurement Notes

Verify component authenticity through authorized distributors as this part number has reached End-of-Life status. Confirm final purchase specifications against official datasheets to ensure compatibility with existing designs before procurement.

Selection Notes

Select this component for applications requiring a robust 5V rail with moderate current demands. Ensure input voltage remains within the 15V limit and consider thermal dissipation requirements due to the linear regulation topology and TO-220 package constraints.

Part Context

Part of the LD1117 family of low-dropout regulators manufactured by STMicroelectronics. This specific model represents the fixed 5V variant in a through-hole TO-220 package, designed for industrial and commercial temperature ranges with standard reliability ratings.

Replacement Considerations

LD1117S50TR is an officially documented substitute offering surface mount SOT-223 packaging with similar electrical characteristics.