onsemi MC79M08CDTRKG: A Robust 800mA Negative Voltage Regulator for Demanding Applications

In the realm of power management, the need for stable and reliable negative voltage rails is critical for a wide array of electronic systems, from operational amplifier circuits to audio equipment and industrial controllers. The onsemi MC79M08CDTRKG stands out as a premier solution, engineered to deliver a precisely regulated -8V output at currents of up to 800mA. This negative linear voltage regulator encapsulates decades of proven performance in a compact, surface-mount package, offering designers a cornerstone component for robust power supply design.

Housed in a space-efficient D2PAK surface-mount package, the MC79M08CDTRKG is designed for automated PCB assembly, making it an excellent choice for high-volume manufacturing. Its TO-252-3 package provides an effective thermal path, allowing the device to dissipate heat efficiently and maintain stable operation under substantial load currents. The regulator requires only a handful of external components—typically just input and output capacitors—to function, which simplifies board layout and reduces the overall bill of materials and assembly cost.

A key strength of this component is its comprehensive suite of internal protections. It is designed with inherent short circuit protection that limits the peak output current to a safe level, preventing catastrophic failure during fault conditions. Furthermore, the IC features internal thermal overload protection, which automatically shuts down the regulator when the junction temperature exceeds a safe operating limit. This built-in resilience ensures system longevity and enhances reliability in challenging environments.

The device operates with an input voltage range of approximately -11V to -35V, providing ample headroom for regulation while maintaining a low dropout voltage. It is capable of delivering a fixed -8V output with a tolerance of ±4%, ensuring the precision required by sensitive analog and digital loads. With low output noise and excellent ripple rejection characteristics, the MC79M08CDTRKG effectively filters out unwanted AC components from the input supply, resulting in a clean and stable DC output.

ICGOOODFIND: The onsemi MC79M08CDTRKG is a highly reliable, medium-current negative voltage regulator that combines ease of use, robust protection features, and stable performance. It is an ideal, industry-standard choice for designers seeking a no-fuss solution for generating a critical -8V rail in a vast range of applications.

Keywords: Negative Voltage Regulator, 800mA Output Current, Internal Protections, Thermal Overload Protection, D2PAK Package