LD1117S18TR in LM1117 / LD1117 LDO Family
The LD1117S18TR is a member of the STMicroelectronics LD1117 series, a family of low-dropout linear regulators designed to provide fixed 1.8V output from a variety of input sources. Capable of delivering up to 800mA of output current, these devices utilize a bipolar transistor as the pass element to achieve low dropout voltages, typically around 1V at full load. They are essential for providing stable, low-noise power rails in logic-level conversion and digital system applications.
Variants in This Sub-Family
Variants within the LD1117 series primarily differ based on output voltage, package type, and tolerance levels. While the LD1117S18TR specifically provides a fixed 1.8V output in a SOT-223 package, other versions offer adjustable outputs from 1.25V to 15V or different fixed values like 3.3V and 5.0V. Package options such as DPAK, TO-220, and SO-8 provide varying thermal dissipation capabilities to suit different power requirements.
