The LM7805 is a basic 5V, 1.5A voltage regulator in the TO-220 package with thermal shutdown and current limiting features to protect against overload. A must have for basic 5V electronics.
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This voltage regulator is a cheap way to add a 5V regulated power source to your project. Although not as efficient as a switchmode regulator, this little unit is very cheap and handles 1.5A.
This fixed-voltage integrated-circuit voltage regulator is designed for a wide range of applications.These applications include on-card regulation for elimination of noise and distribution problems associated with single-point regulation. The regulator can deliver up to 1.5 A of output current. The internal current-limiting and thermal-shutdown features of these regulators essentially make them immune to overload. In addition to use as fixed-voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents, and also can be used as the power-pass element in precision regulators.