This is the basic LD1117V33 voltage regulator, a low drop positive regulator with a 3.3V fixed output voltage. This fixed regulator provides a great amount of stability and protection for your project and with its on ship trimming this regulator is able to reach an output voltage tolerance within ±1%. Each one of these voltage regulators can output a max current of 800mA

1. Output Voltage: 3.3V
2. Output Current: 800mA
3. Dropout Voltage: 1V
4. Internal Current and Thermal Limit

LD1117V33, LD33CV Linear Voltage Regulator

Reference site : https://www.sparkfun.com/products/526