onsemi

MC78M12CDTRK

MC78M12CDTRK Description

The MC78M12CDTRK from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 12V 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 PCB designs and automated assembly processes. It operates over a wide 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 reliability in demanding applications.

MC78M12CDTRK Features

• Fixed 12V Output: Ensures consistent voltage regulation without external adjustments.
• High Input Voltage Tolerance (35V): Accommodates fluctuating input sources.
• 500mA Output Current: Sufficient for powering moderate loads like sensors, microcontrollers, and small motors.
• Robust Protection: Built-in over-temperature and short-circuit safeguards prevent damage under fault conditions.
• Low Noise Performance: 80dB PSRR minimizes ripple, ideal for noise-sensitive analog circuits.
• Surface-Mount DPAK Package: Space-efficient and compatible with high-volume manufacturing.
• Wide Operating Temperature Range (0°C to 125°C): Suitable for harsh environments.

MC78M12CDTRK Applications

This regulator is ideal for:

• Industrial Control Systems: Powering PLCs, motor drivers, and instrumentation.
• Automotive Electronics: Supporting infotainment systems, sensors, and lighting modules.
• Consumer Electronics: Voltage regulation in set-top boxes, routers, and audio equipment.
• Embedded Systems: Reliable power for microcontrollers, FPGAs, and peripheral circuits.
• Noise-Sensitive Analog Circuits: Such as ADCs, DACs, and signal conditioning modules.

Conclusion of MC78M12CDTRK

The MC78M12CDTRK 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, no-frills 12V regulator. Its wide input range and thermal resilience make it a pragmatic choice for industrial, automotive, and embedded systems where stability and durability are critical. Designers should verify alternative solutions for new projects due to its obsolete status.