LDL1117S33R 3.3V 1A Low Dropout Linear Regulator IC | SOT-223 / TO-261-4 / TO-261AA Package | STMicroelectronics

3.3V 1.2A Linear Voltage Regulator IC | SOT-223 Package

This positive fixed-output linear voltage regulator IC delivers a stable 3.3V output with up to 1.2A of guaranteed current, housed in a compact SOT-223 package. Designed for efficiency and reliability, it supports an input voltage range of 2.5V to 18V and offers excellent power supply rejection ratio (PSRR) of 87 dB at 120 Hz.

Key features include a low dropout voltage of 350 mV at full load, multiple fixed output voltage options (1.2V, 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V), and robust protection mechanisms including thermal shutdown, current limiting, and power limitation. It operates reliably in temperatures from -40°C to +125°C, making it suitable for a wide range of industrial, consumer, and embedded applications.