ONSEMI MC78M05CDTRKG 5V 500mA Linear Voltage Regulator, TO-252-3

The ONSEMI MC78M05CDTRKG is a positive linear voltage regulator, offering a reliable and straightforward solution for local, on-card voltage regulation. It is fully compatible with the popular 7800 series but is specified for a lower output current, making it ideal for applications where space and thermal management are key considerations.

Designed as a robust 3-terminal device, it requires no external components to operate, simplifying circuit design and reducing part count. Its internal architecture includes current limiting, thermal shutdown, and safe-area compensation for the internal pass transistor. These integrated protection features combine to make the regulator remarkably rugged, ensuring stable operation under a wide range of conditions. With adequate heat-sinking, it can deliver a maximum output current of 500mA, providing ample power for many low-to-medium current circuits.

Key Features & Benefits

• Fixed 5V Output: Provides a stable and precise +5V DC output voltage, essential for powering digital logic, microcontrollers, and other 5V components.
• Wide Input Range: Accepts an input voltage from 10V up to 35V, offering flexibility in various power supply designs.
• Integrated Protection: Features internal thermal overload protection and a short-circuit current limit, safeguarding both the regulator and your circuit from damage.
• Surface Mount Design: Housed in a TO-252-3 (DPAK) package, it is designed for efficient surface mount (SMT) assembly, saving valuable board space.
• Lead-Free Construction: Manufactured as a Pb-free device, complying with modern environmental and regulatory standards.

This regulator is a cornerstone component for power management, providing a clean and steady voltage source from a higher, unregulated input.