onsemi

MC79M12BDTG

MC79M12BDTG Description

The MC79M12BDTG from onsemi is a fixed-output negative linear voltage regulator delivering -12V at 500mA with robust performance in a DPAK (TO-252) surface-mount package. Designed for stability and efficiency, it features a low dropout voltage of 1.1V (typical at 500mA) and high PSRR (60dB at 120Hz), making it suitable for noise-sensitive applications. This obsolete but reliable regulator is ROHS3 compliant and REACH unaffected, ensuring environmental compliance. Its over-current and over-temperature protection safeguards against fault conditions, while the MSL 1 (Unlimited) rating simplifies storage and handling.

MC79M12BDTG Features

• Output Configuration: Negative, fixed -12V output.
• High Current Capacity: 500mA continuous output current.
• Low Dropout: 1.1V typical at full load, enhancing efficiency.
• Excellent Noise Rejection: 60dB PSRR at 120Hz for clean power delivery.
• Robust Protection: Integrated over-current and over-temperature shutdown.
• Compact & Reliable: DPAK (TO-252) package for space-constrained designs.
• Compliance: ROHS3, REACH, and ECCN EAR99 certified.

MC79M12BDTG Applications

Ideal for analog and mixed-signal circuits requiring stable negative voltage rails, such as:

• Audio amplifiers and signal processing systems benefiting from low-noise regulation.
• Industrial control systems where rugged performance and protection are critical.
• Test & measurement equipment demanding precise voltage references.
• Legacy electronics requiring drop-in replacements for obsolete regulators.

Conclusion of MC79M12BDTG

The MC79M12BDTG is a high-performance, negative-voltage regulator offering low dropout, high PSRR, and robust protection in a compact DPAK package. While marked obsolete, its reliability and compliance make it a viable choice for noise-sensitive, industrial, and legacy applications. Engineers seeking a proven -12V regulator with 500mA capability will find this device a dependable solution.