EVOLUTION OF VOLTAGE REGULATOR TO SYSTEM ON CHIP APPLICATIONS

People demanding for smaller hand-held devices is increasing because of the growing applications within these portable System on Chip (SoC) applications, such as cellular phones, tabs, laptops, etc... Consequently industry is also pushing towards miniaturization. New technologies are emerging to make device smaller and smaller, by decreasing transistor length only to few nano-meters. During the journey of miniaturization, voltage regulator is being a key factor of discussion for SoC applications from many years. Researchers have been working constantly to formulate a design for voltage regulators. Many compensation methods have been emerging from last two decades to overcome problems associated with precursor technique. This paper insights the pathway which leads to development of Capacitor-Less Low Drop out (CL-LDO) Voltage Regulator, since CL-LDO architecture is the most suitable architecture for System on Chip applications.