onsemi

MC7808BD2TG

MC7808BD2TG Description

The MC7808BD2TG by onsemi is a fixed-output linear voltage regulator designed to deliver a stable 8V output at up to 1A current, with a maximum input voltage of 35V. Housed in a D2PAK (TO-263) surface-mount package, this obsolete but robust component remains relevant for legacy designs due to its reliability and compliance with ROHS3 and REACH standards. It features a low dropout voltage of 2V (typical at 1A) and a quiescent current of 8 mA, making it suitable for power-sensitive applications. With 62dB PSRR (120Hz), it effectively filters input noise, ensuring clean power delivery.

MC7808BD2TG Features

• Fixed 8V Output: Ensures consistent voltage regulation without external adjustments.
• High Input Voltage Tolerance (35V): Accommodates a wide range of input sources.
• Over-Temperature & Short-Circuit Protection: Enhances system reliability under fault conditions.
• Low Dropout Voltage (2V @ 1A): Minimizes power dissipation, improving efficiency.
• Surface-Mount D2PAK Package: Optimized for space-constrained PCB designs.
• 62dB PSRR: Superior noise rejection for sensitive analog/digital circuits.
• ROHS3 & REACH Compliant: Meets environmental and safety standards.

MC7808BD2TG Applications

This regulator is ideal for:

• Industrial Control Systems: Stable voltage supply for sensors, PLCs, and actuators.
• Automotive Electronics: Power management in infotainment or auxiliary systems (within voltage limits).
• Consumer Electronics: Reliable voltage regulation for audio amplifiers, set-top boxes, and legacy devices.
• Embedded Systems: Low-noise power for microcontrollers and analog circuits.
• Retrofit Designs: Replacement for obsolete linear regulators in maintenance scenarios.

Conclusion of MC7808BD2TG

While marked obsolete, the MC7808BD2TG remains a dependable choice for applications requiring a high-current, fixed 8V supply with robust protection features. Its low dropout, high PSRR, and rugged packaging make it suitable for industrial, automotive, and consumer electronics where noise immunity and thermal resilience are critical. Designers seeking a proven, RoHS-compliant linear regulator for legacy or cost-sensitive projects will find this component a practical solution.