onsemi

MC79M05CDTG

MC79M05CDTG Description

The MC79M05CDTG is a fixed-output negative linear voltage regulator from onsemi, designed to deliver a stable -5V output with a 500mA current capacity. Housed in a DPAK (TO-252) surface-mount package, this obsolete but reliable component is ideal for legacy designs requiring robust power regulation. It features a low dropout voltage of 1.1V (typical at 500mA) and operates across a wide temperature range of 0°C to 125°C, ensuring performance in demanding environments. With 66dB PSRR (120Hz), it effectively suppresses input noise, making it suitable for sensitive analog circuits. The device includes over-current and over-temperature protection, enhancing system reliability.

MC79M05CDTG Features

• Fixed -5V Output: Precision-regulated negative voltage for consistent performance.
• High Current Capacity: Supports up to 500mA load current.
• Low Dropout Voltage: 1.1V typical at full load, minimizing power loss.
• Robust Protection: Integrated over-current and over-temperature shutdown.
• Excellent Noise Rejection: 66dB PSRR at 120Hz for clean power delivery.
• Wide Operating Range: 0°C to 125°C for industrial and automotive applications.
• Surface-Mount DPAK Package: Compact and suitable for automated assembly.
• Compliance: ROHS3 and REACH compliant, with MSL 1 (Unlimited) shelf life.

MC79M05CDTG Applications

This regulator is optimized for systems requiring stable negative voltage rails, including:

• Analog Circuits: Precision signal processing, audio amplifiers, and instrumentation.
• Industrial Controls: Power supplies for sensors, actuators, and control modules.
• Automotive Electronics: Infotainment systems, dashboard displays, and ECUs.
• Legacy Equipment: Maintenance and repair of older systems where replacement parts are scarce.
• Test & Measurement: Bench power supplies and lab equipment requiring low-noise rails.

Conclusion of MC79M05CDTG

The MC79M05CDTG is a dependable choice for applications demanding a high-current, negative-voltage regulator with robust protection and noise immunity. While marked as obsolete, its DPAK packaging, wide temperature range, and compliance make it a practical solution for legacy and industrial designs. Engineers seeking a cost-effective, noise-resistant regulator for analog or mixed-signal systems will find this component well-suited to their needs.