The LM7805 is a voltage regulator that outputs 5 volts. Like most other regulators in the market, it is a three-pin IC; input pin for accepting incoming DC voltage, ground pin for establishing ground for the regulator, and output pin that supplies the positive 5 volts.Basic OperationThe 7805 is perhaps the most commonly used linear regulator available. Input voltage can range from 7 – 35VDC and it outputs a fixed 5V at over 1A of current and up to 2.2A of surge current. For basic operation, no external components are required.
