The LD1117-3.3V is a low-dropout (LDO) linear voltage regulator IC that delivers a fixed 3.3V output from input voltages as low as 4.75V, making it ideal for 5V-to-3.3V conversions. It supports up to 800mA output current, and features internal current limiting and thermal protection for safe and reliable operation.
- Output Voltage: 3.3V (fixed)
- Input Voltage Range: 4.75V – 15V
- Output Current: Up to 800mA
- Dropout Voltage: ~1.1V (at 800mA)
- Package: TO-220 / SOT-223 (varies by version)
- Protections: Overcurrent and thermal shutdown
- Applications: 3.3V microcontrollers (ESP8266, ESP32), sensors, embedded systems, IoT devices
The LD1117-3.3V is a popular choice for stepping down 5V supplies to power modern low-voltage electronics in Arduino, Raspberry Pi, and ESP projects.
