onsemi

MC79M15BDTG

MC79M15BDTG Description

The MC79M15BDTG from onsemi is a fixed-output negative voltage regulator designed to deliver a stable -15V output with a 500mA current capacity. Housed in a DPAK (TO-252) surface-mount package, this linear regulator is optimized for applications requiring reliable power conditioning. Though marked as obsolete, it remains a robust choice for legacy designs due to its high PSRR (60dB at 120Hz) and low dropout voltage (1.1V typical at 500mA). It features over-current and over-temperature protection, ensuring safe operation under demanding conditions. Compliant with ROHS3 and REACH standards, it suits environmentally conscious designs.

MC79M15BDTG Features

• Output Type: Fixed -15V with 500mA current output.
• High Efficiency: Low dropout voltage (1.1V @ 500mA) minimizes power dissipation.
• Excellent Noise Rejection: 60dB PSRR at 120Hz for clean output in noisy environments.
• Robust Protection: Integrated over-current and over-temperature safeguards.
• Compact & Reliable: DPAK package offers efficient thermal dissipation for surface-mount designs.
• Compliance: ROHS3 and REACH Unaffected, with MSL 1 (Unlimited) shelf life.

MC79M15BDTG Applications

Ideal for systems requiring stable negative voltage rails, such as:

• Industrial Control Systems: Powering analog circuits, sensors, and op-amps.
• Audio Equipment: Providing clean bias voltages for amplifiers and mixers.
• Legacy Electronics: Servicing older designs where -15V regulation is critical.
• Test & Measurement: Precision instruments needing low-noise power supplies.

Conclusion of MC79M15BDTG

The MC79M15BDTG is a dependable negative voltage regulator for applications demanding high PSRR, thermal protection, and moderate current output. While obsolete, its performance and durability make it a viable option for maintenance, repairs, or niche designs. Engineers valuing low dropout, noise immunity, and compact packaging will find it a pragmatic solution despite newer alternatives.