LD1117 3.3V Voltage Regulator (LD33V) – Low Dropout 3.3V Regulator IC for Microcontrollers
The LD1117 3.3V, also known as LD33V, is a low dropout (LDO) linear voltage regulator that provides a stable 3.3V output from a higher input voltage. It’s widely used in Arduino, ESP8266, ESP32, and other microcontroller-based circuits. With a maximum output current of up to 800 mA, it is perfect for powering 3.3V logic systems in embedded applications.
 
Key Features:
Fixed 3.3V Output
Regulates input voltage down to a stable 3.3V DC output.
Low Dropout Voltage
Operates with minimal difference between input and output voltage (~1.1V at full load).
Supports Up to 800 mA
Suitable for moderate current loads with proper heat sinking.
TO-220 Package
Easy to mount and provides excellent heat dissipation.
Thermal & Overcurrent Protection
Built-in safety features prevent damage from overheating and short circuits.
 
Applications:
3.3V power supply for ESP8266, ESP32, and other modules
Voltage regulation for sensors and peripherals
Arduino and Raspberry Pi accessories
Embedded and IoT systems
General-purpose low-voltage DC regulation
 
Package Includes:
1 × LD1117 3.3V (LD33V) Voltage Regulator 
 
Specifications:
Output Voltage: 3.3V (fixed)
Input Voltage Range: 4.75V to 15V
Maximum Output Current: 800 mA
Dropout Voltage: ~1.1V at 800 mA
Package Type: TO-220
Protection: Thermal shutdown, short circuit
Mounting Type: Through-hole
 
Dimensions:
Length: 10 mm
Width: 4.5 mm
Height: 15 mm
 
Weight: 1.2 g
 
People Also Search For:
LD33V voltage regulator
LD1117 3.3V regulator
LDO 3.3V IC
TO-220 3.3V regulator
ESP32 voltage regulator
3.3V power supply IC
LD1117 vs AMS1117
Arduino 3.3V regulator