LD1117S33CTR 3.3V Low Dropout Linear Voltage Regulator – 800mA – SOT-223 – STMicroelectronics

The LD1117S33CTR is a fixed 3.3V low-dropout (LDO) linear voltage regulator from STMicroelectronics, designed for stable power regulation in compact surface-mount applications. With a maximum output current of 800mA, it delivers reliable performance for microcontrollers, digital ICs, sensors, and embedded systems requiring clean, regulated 3.3V power.

This regulator supports input voltages up to 15V, with a typical dropout voltage of 1.2V at full load, making it suitable for battery-powered designs and low-voltage conversion stages. The device integrates thermal shutdown and current limiting protection, ensuring safe operation under fault or overload conditions.

Packaged in a SOT-223 surface-mount footprint and supplied in tape-and-reel (TR) packaging, the LD1117S33CTR provides efficient assembly for high-volume production.

Key Features:

• Fixed 3.3V linear LDO regulator

• Up to 800mA output current

• Wide input voltage range up to 15V

• Low dropout voltage (1.2V at 800mA)

• ±1% output voltage accuracy (A-grade)

• Internal thermal shutdown and current limit

• SOT-223 surface-mount package

Package Includes:
1X LD1117S33CTR Voltage Regulator

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