onsemi

MC7908CD2TG

MC7908CD2TG Description

The MC7908CD2TG is a fixed-output negative voltage regulator from onsemi, designed to deliver a stable -8V output with a maximum current of 1A. Housed in a D2PAK (TO-263) surface-mount package, this linear regulator is optimized for applications requiring reliable power management with minimal dropout voltage (1.3V typical at 1A). With an operating temperature range of 0°C to 125°C, it is suitable for industrial and automotive environments. The device features over-current and over-temperature protection, ensuring robust performance under demanding conditions. Though marked as obsolete, it remains a viable choice for legacy designs due to its high PSRR (62dB at 120Hz) and ROHS3 compliance.

MC7908CD2TG Features

• Fixed -8V Output: Ensures precise voltage regulation for negative rail applications.
• High Current Capacity: Supports up to 1A continuous output current with low dropout.
• Enhanced Protection: Includes over-current and over-temperature safeguards for system reliability.
• Low Noise & High PSRR: 62dB ripple rejection at 120Hz minimizes noise in sensitive circuits.
• Wide Temperature Range: Operates from 0°C to 125°C, ideal for harsh environments.
• Surface-Mount Design: D2PAK package offers efficient thermal dissipation and PCB space savings.
• Compliance: ROHS3 compliant and REACH unaffected, meeting environmental standards.

MC7908CD2TG Applications

• Industrial Power Supplies: Stable negative voltage for analog/digital control systems.
• Automotive Electronics: Reliable regulation in infotainment or sensor modules.
• Telecom Equipment: Noise-sensitive RF and signal processing circuits.
• Legacy Systems: Maintenance or repair of older designs requiring -8V rails.
• Test & Measurement: Precision voltage references in lab instruments.

Conclusion of MC7908CD2TG

The MC7908CD2TG is a robust, high-performance negative voltage regulator, offering low dropout, high PSRR, and built-in protections. While obsolete, its D2PAK packaging and wide operating range make it a pragmatic choice for industrial, automotive, and legacy applications. Engineers seeking a dependable -8V regulator with proven reliability will find this device well-suited for demanding power management tasks.