STMicroelectronics Voltage Regulators - Linear LDL1117S18R

The LDL1117S18R is a linear voltage regulator from Quarktwin Technology Ltd. designed to provide a fixed output voltage of 1.8 V with a maximum output current of 1.2 A. It operates with an input voltage range of 2.5 V to 18 V and features a typical dropout voltage of 350 mV at 1.2 A. The device boasts a high power supply rejection ratio (PSRR) of 87 dB at 120 Hz, making it suitable for applications requiring stable voltage regulation, such as in consumer electronics, industrial systems, and DC-DC converters. The LDL1117S18R includes built-in protections for thermal, current, and power limitations, ensuring reliable operation across an operating temperature range of -40 °C to 125 °C. It is packaged in a compact SOT223 form factor, facilitating integration into various designs.