onsemi

MC7808ACTG

MC7808ACTG Description

The MC7808ACTG from onsemi is a fixed-output linear voltage regulator designed to deliver a stable 8V DC output at up to 1A of continuous current. With an input voltage range up to 35V, it is engineered for applications requiring reliable voltage regulation in industrial, automotive, and consumer electronics. The device operates within a 0°C to 125°C temperature range, making it suitable for harsh environments. Housed in a TO-220AB package, it features over-temperature and short-circuit protection, ensuring robust performance under fault conditions. Although marked as obsolete, it remains a dependable choice for legacy designs due to its low dropout voltage (2V typical at 1A) and high PSRR (62dB at 120Hz), which minimizes noise in sensitive circuits.

MC7808ACTG Features

• Fixed 8V Output: Precision-regulated voltage for consistent performance.
• High Input Voltage Tolerance: Supports up to 35V, accommodating wide input variations.
• 1A Output Current: Sufficient for powering medium-load applications.
• Low Dropout Voltage: 2V typical at 1A, enhancing efficiency in low-input scenarios.
• Protection Mechanisms: Built-in over-temperature and short-circuit safeguards.
• Low Quiescent Current: 6 mA, reducing power dissipation in standby modes.
• High PSRR (62dB): Excellent noise suppression for clean power delivery.
• RoHS3 Compliant: Meets environmental standards for hazardous substance restrictions.

MC7808ACTG Applications

• Industrial Control Systems: Powering sensors, actuators, and control logic.
• Automotive Electronics: Voltage stabilization for infotainment and dashboard systems.
• Consumer Devices: Reliable power for audio amplifiers, set-top boxes, and small appliances.
• Legacy Equipment Maintenance: Ideal for repairing or replicating older designs requiring 8V regulation.
• Test and Measurement Tools: Providing stable voltage references for precision instruments.

Conclusion of MC7808ACTG

The MC7808ACTG is a robust, high-performance linear regulator offering exceptional voltage stability and protection features. While obsolete, its high PSRR, wide operating temperature range, and 1A output capability make it a viable solution for demanding applications. Engineers seeking a proven 8V regulator for industrial, automotive, or legacy systems will find this device a reliable choice, despite its discontinued status. Its TO-220AB package ensures easy integration, while its low dropout and thermal protection enhance longevity in critical circuits.