onsemi

MC78M08ABDTG

MC78M08ABDTG Description

The MC78M08ABDTG 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. Though marked as obsolete, it remains a robust choice for legacy designs due to its high 80dB PSRR (120Hz), which minimizes noise and ripple in sensitive circuits. The device includes over-temperature and short-circuit protection, enhancing system reliability under fault conditions. Compliant with ROHS3 and REACH Unaffected standards, it meets modern environmental regulations.

MC78M08ABDTG Features

• Fixed 8V Output: Precision-regulated voltage for stable power delivery.
• High Input Voltage Tolerance: Supports up to 35V, accommodating wide input ranges.
• 500mA Output Current: Suitable for moderate-power applications.
• Low Noise Performance: 80dB PSRR at 120Hz ensures clean output in noise-sensitive systems.
• Robust Protection: Integrated over-temperature and short-circuit safeguards.
• Surface-Mount DPAK Package: Ideal for automated assembly and compact PCB layouts.
• Compliance: ROHS3 and REACH Unaffected, with MSL 1 (Unlimited) moisture sensitivity.

MC78M08ABDTG Applications

This regulator excels in applications requiring stable, low-noise 8V power, such as:

• Industrial Control Systems: Powering sensors, actuators, and control logic.
• Consumer Electronics: Voltage regulation for audio amplifiers, set-top boxes, and displays.
• Automotive Electronics: Auxiliary power for infotainment or lighting systems (non-safety-critical).
• Legacy Equipment Maintenance: Replacing obsolete regulators in existing designs.
  Its high PSRR makes it particularly suited for analog circuits where power supply noise must be minimized.

Conclusion of MC78M08ABDTG

While the MC78M08ABDTG is no longer in active production, its combination of high voltage tolerance, robust protection, and low-noise output ensures continued relevance in legacy and niche applications. Engineers seeking a reliable 8V linear regulator with proven performance may find this device a viable solution, especially where DPAK packaging and moderate current capacity are key requirements. For new designs, consulting onsemi's current offerings is advised to identify modern alternatives with similar or enhanced features.