onsemi

MC79L05ABDG

MC79L05ABDG Description

The MC79L05ABDG from onsemi is a fixed-output negative voltage regulator delivering -5V at up to 100mA load current. Designed for surface-mount applications, it comes in an 8-SOIC package and is ideal for space-constrained designs. This obsolete but still relevant component offers robust performance with over-temperature and short-circuit protection, ensuring reliability in demanding environments. With a low dropout voltage of 1.7V (typical at 40mA) and 49dB PSRR at 120Hz, it provides stable power supply filtering, making it suitable for noise-sensitive analog circuits.

MC79L05ABDG Features

• Fixed -5V Output: Ensures consistent voltage regulation for precision applications.
• High PSRR (49dB): Minimizes ripple and noise in sensitive electronics.
• Low Dropout (1.7V): Efficiently regulates voltage even with small input-output differentials.
• Protection Mechanisms: Built-in thermal shutdown and short-circuit protection enhance durability.
• Surface-Mount (8-SOIC): Compact footprint ideal for modern PCB designs.
• RoHS3 Compliant: Meets environmental standards for lead-free manufacturing.

MC79L05ABDG Applications

• Analog & Digital Circuits: Stable negative rail supply for op-amps, sensors, and data converters.
• Industrial Control Systems: Reliable voltage regulation in harsh environments.
• Consumer Electronics: Power management in audio amplifiers, portable devices.
• Test & Measurement Equipment: Low-noise power for precision instrumentation.
• Legacy System Maintenance: Suitable for repairs or upgrades of older designs requiring -5V regulation.

Conclusion of MC79L05ABDG

The MC79L05ABDG is a high-performance, compact negative voltage regulator offering low dropout, high PSRR, and robust protection features. While marked as obsolete, its reliability and efficiency make it a viable choice for legacy systems or applications requiring stable -5V power. Its surface-mount packaging and compliance with RoHS3 further enhance its suitability for modern and environmentally conscious designs.