onsemi

MC78M05ABDT

MC78M05ABDT Description

The MC78M05ABDT from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 5V output with a maximum input voltage of 35V and an output current capability of 500mA. Housed in a DPAK (TO-252) surface-mount package, this regulator is optimized for compact and efficient power management in a wide range of electronic systems. Despite its obsolete status, it remains a reliable choice for legacy designs due to its robust performance and proven reliability. The device features over-temperature and short-circuit protection, ensuring safe operation under fault conditions. With a PSRR of 80dB at 120Hz, it effectively filters input noise, making it suitable for noise-sensitive applications.

MC78M05ABDT Features

• Fixed 5V Output: Ensures stable voltage regulation for low-power circuits.
• High Input Voltage Tolerance (35V): Accommodates varying input sources.
• 500mA Output Current: Sufficient for powering small to medium loads.
• Surface-Mount DPAK Package: Ideal for space-constrained PCB designs.
• Protection Features: Includes over-temperature and short-circuit safeguards.
• High PSRR (80dB): Minimizes output ripple in noisy environments.
• Moisture Sensitivity Level (MSL) 1: Suitable for extended storage and handling.
• REACH Unaffected: Compliant with environmental regulations.

MC78M05ABDT Applications

The MC78M05ABDT is well-suited for applications requiring a stable 5V supply, such as:

• Embedded Systems: Microcontroller and logic circuit power regulation.
• Consumer Electronics: Power management in small appliances and peripherals.
• Industrial Controls: Reliable voltage regulation in automation systems.
• Automotive Electronics: Auxiliary power for sensors and low-power modules (within input voltage limits).
• Legacy Designs: Replacement or maintenance of older systems using obsolete components.

Conclusion of MC78M05ABDT

The MC78M05ABDT offers a dependable, compact solution for 5V power regulation, combining high input tolerance, robust protection, and excellent noise suppression. While marked as obsolete, its performance and durability make it a viable option for legacy or cost-sensitive designs. Engineers seeking a proven linear regulator with 500mA output and DPAK packaging will find this device a practical choice for noise-sensitive, low-to-medium-power applications. For new designs, alternative modern regulators with similar specifications may be preferred.