onsemi

MC79M15CDTG

MC79M15CDTG Description

The MC79M15CDTG is a fixed-output negative voltage regulator from onsemi, designed to deliver a stable -15V output with a 500mA current capacity. Housed in a DPAK (TO-252) surface-mount package, this obsolete but reliable component is ROHS3 compliant and REACH unaffected, making it suitable for legacy designs requiring compliance with environmental standards. It operates across a wide temperature range of 0°C to 125°C, ensuring robustness in demanding environments. With a low dropout voltage of 1.1V (typical at 500mA) and 60dB PSRR at 120Hz, it excels in noise-sensitive applications. The device includes over-current and over-temperature protection, enhancing system reliability.

MC79M15CDTG Features

• Fixed Negative Output: Delivers a precise -15V with ±4% tolerance.
• High Current Capacity: Supports up to 500mA continuous output current.
• Low Dropout Voltage: 1.1V (typical) at full load, optimizing efficiency.
• Excellent Noise Rejection: 60dB PSRR at 120Hz minimizes ripple in sensitive circuits.
• Robust Protection: Integrated over-current and over-temperature shutdown safeguards against faults.
• Wide Operating Range: Functions reliably from 0°C to 125°C, suitable for industrial applications.
• Compact Packaging: DPAK (TO-252) surface-mount design saves board space.

MC79M15CDTG Applications

• Power Supplies: Ideal for negative rail voltage regulation in dual-supply systems.
• Industrial Equipment: Suited for control systems, sensors, and instrumentation requiring stable negative voltages.
• Audio Amplifiers: Low-noise performance benefits analog audio circuits.
• Legacy Systems: Maintains compatibility with older designs due to its obsolete but dependable status.
• Automotive Electronics: Withstands harsh environments, though design verification is recommended.

Conclusion of MC79M15CDTG

The MC79M15CDTG is a high-performance negative voltage regulator offering precision, reliability, and protection features for demanding applications. While obsolete, its low dropout, high PSRR, and robust packaging make it a preferred choice for legacy and noise-sensitive designs. Engineers seeking a stable -15V supply with 500mA capability will find this regulator well-suited for industrial, audio, and dual-voltage systems. Its DPAK form factor ensures easy integration, though alternative modern solutions should be evaluated for new designs.