onsemi

MC78M15BDTG

MC78M15BDTG Description

The MC78M15BDTG from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 15V 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 features over-temperature and short-circuit protection, enhancing system durability under fault conditions. With a PSRR of 70dB at 120Hz, it effectively suppresses input noise, making it suitable for sensitive analog and digital circuits. Although marked as obsolete, it remains a robust choice for legacy designs requiring high-quality voltage regulation.

MC78M15BDTG Features

• Fixed 15V Output: Ensures precise voltage regulation without external adjustments.
• High Input Voltage Tolerance: Supports up to 35V, accommodating a wide range of input sources.
• 500mA Output Current: Sufficient for powering moderate-load applications.
• DPAK Package: Compact and thermally efficient for surface-mount designs.
• Protection Mechanisms: Includes over-temperature and short-circuit protection for enhanced reliability.
• Low Noise Performance: 70dB PSRR minimizes ripple in noise-sensitive circuits.
• RoHS3 Compliant & REACH Unaffected: Meets environmental and regulatory standards.

MC78M15BDTG Applications

The MC78M15BDTG is ideal for applications requiring stable, low-noise voltage rails, such as:

• Industrial Control Systems: Powering sensors, actuators, and control logic.
• Consumer Electronics: Voltage regulation in audio amplifiers, set-top boxes, and displays.
• Automotive Electronics: Auxiliary power for infotainment or lighting systems (non-critical).
• Legacy Equipment: Maintenance or repair of older systems where obsolete components are still viable.
• Test & Measurement: Providing clean power to precision analog circuits.

Conclusion of MC78M15BDTG

The MC78M15BDTG offers a balance of performance, reliability, and compactness, making it a dependable choice for 15V regulation in industrial, consumer, and legacy applications. While newer alternatives may exist, its high PSRR, robust protection features, and DPAK package ensure it remains a viable solution for designs prioritizing noise immunity and thermal efficiency. Engineers should evaluate its obsolete status but can leverage its proven performance for specific use cases.