onsemi

MC79M12BTG

MC79M12BTG Description

The MC79M12BTG from onsemi is a fixed-output negative linear voltage regulator delivering -12V at up to 500mA of continuous output current. Designed for through-hole mounting (TO-220AB package), it features robust over-current and over-temperature protection, ensuring reliable operation in demanding environments. With a low dropout voltage of 1.1V (typical at 500mA) and 60dB PSRR at 120Hz, it provides stable power supply rejection, making it suitable for noise-sensitive analog circuits. The device complies with ROHS3 and REACH environmental standards, and its MSL (Moisture Sensitivity Level) is Not Applicable, simplifying storage and handling.

MC79M12BTG Features

• Fixed -12V Output: Ensures consistent voltage regulation without external adjustments.
• High Current Capability: Supports 500mA load current, ideal for moderate-power applications.
• Low Dropout Voltage: 1.1V (typical) at full load minimizes power dissipation.
• Excellent PSRR: 60dB at 120Hz reduces ripple and noise in sensitive circuits.
• Robust Protection: Integrated over-current and over-temperature safeguards enhance reliability.
• Wide Compliance: ROHS3, REACH Unaffected, and EAR99/8542.39.0001 classifications ensure global usability.
• Through-Hole Package (TO-220AB): Facilitates easy mounting and heat dissipation.

MC79M12BTG Applications

The MC79M12BTG is ideal for:

• Industrial Control Systems: Stable negative rail generation for op-amps and analog circuits.
• Audio Equipment: Low-noise power supply for preamps, mixers, and effects units.
• Test & Measurement Instruments: Precision voltage references requiring minimal ripple.
• Embedded Systems: Reliable regulation for legacy or modular designs with through-hole PCBs.
• Power Supply Modules: Secondary regulation in dual-rail configurations.

Conclusion of MC79M12BTG

The MC79M12BTG stands out for its high current output, low dropout, and superior noise rejection, making it a dependable choice for analog and mixed-signal systems. Its robust protection features and compliance with environmental standards further enhance its suitability for industrial and consumer applications. For engineers seeking a cost-effective, high-performance negative voltage regulator, this device offers a compelling balance of reliability and efficiency.