ONSEMI 7805 TO-220 5V 1A Positive Voltage Regulator

The ONSEMI 7805 is a positive, fixed-voltage linear regulator integrated circuit (IC) in a robust TO-220-3 package. It provides a stable 5V, 1A output, making it an essential component for power supply design across a wide range of applications. This regulator is engineered for local, on-card regulation, simplifying circuits by eliminating the need for complex external components.

For reliable operation, the device features comprehensive internal protection including short-circuit current limiting, thermal overload protection, and output transistor safe-area compensation. These integrated safeguards help prevent damage from accidental overloads, excessive current draw, or high ambient temperatures. With adequate heat sinking, the regulator can deliver output currents in excess of 1 ampere, supporting demanding loads.

While designed as a fixed 5V regulator, the MC7805CTG can be configured with external passive components to create adjustable voltage and current sources, offering greater design flexibility. Its through-hole mounting and standard three-pin TO-220 footprint make it easy to integrate into prototype boards, educational projects, and final production units.

The component operates across a broad input voltage range from 10V to 35V and is rated for an industrial temperature range of 0°C to +125°C, ensuring performance stability in varied environments. Its simple, three-terminal design (Input, Ground, Output) and lack of required external components make it an ideal, cost-effective solution for creating clean, regulated 5V rails from unregulated DC sources.