onsemi

MC78M08CDT

MC78M08CDT Description

The MC78M08CDT is a fixed-output linear voltage regulator from onsemi, designed to deliver a stable 8V 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 space-constrained applications while ensuring reliable performance. It operates within a temperature range of 0°C to 125°C, making it suitable for industrial and automotive environments. With 80dB PSRR (120Hz), it effectively suppresses input noise, ensuring clean power delivery. The device includes over-temperature and short-circuit protection, enhancing system reliability.

MC78M08CDT Features

• Fixed 8V Output: Ensures consistent voltage regulation without adjustable components.
• High Input Voltage Tolerance (35V): Accommodates wide input variations.
• 500mA Output Current: Sufficient for powering moderate loads.
• Robust Protection: Built-in thermal shutdown and short-circuit protection safeguard against faults.
• Low Noise Performance: 80dB PSRR minimizes ripple in sensitive circuits.
• Surface-Mount DPAK Package: Ideal for compact PCB designs.
• Wide Operating Temperature (0°C to 125°C): Suitable for harsh environments.

MC78M08CDT Applications

• Industrial Control Systems: Powering sensors, microcontrollers, and actuators.
• Automotive Electronics: Voltage regulation for infotainment and lighting systems.
• Consumer Electronics: Stable power supply for audio amplifiers and small displays.
• Embedded Systems: Reliable voltage regulation for IoT devices and low-power modules.
• Power Management Circuits: Secondary regulation in switch-mode power supplies (SMPS).

Conclusion of MC78M08CDT

The MC78M08CDT is a dependable linear regulator offering high noise immunity, robust protection, and a compact form factor. While marked as obsolete, its performance remains competitive for legacy designs or applications requiring a simple, fixed 8V supply. Its wide input range and thermal resilience make it a practical choice for industrial, automotive, and embedded systems where stability and durability are critical. Engineers seeking a proven solution for moderate-current regulation should consider this device for cost-effective power management.