DESIGN OF A WIDE-INPUT-RANGE LINEAR VOLTAGE REGULATOR USING 90 nm CMOS TECHNOLOGY

Abstract

This study presents the design of a low-dropout linear voltage regulator using 90nm CMOS technology. The design addresses the increasing demand for stable and efficient power supplies capable of operating across a wide input voltage range for mobile applications. The proposed circuit architecture is optimized to achieve high efficiency, robust output voltage stability under wide input voltage variation, and low power consumption. Simulation results validate the effectiveness of the designed circuit. Specifically, the circuit successfully maintains a stable output voltage over a wide input voltage range of 1,9 to 20,5 V. It achieves a low dropout voltage of only 300 mV and demonstrates a fast load transient response while maintaining low quiescent current. These newly found characteristics are suitable for the high efficiency and reliable operation of the system required under variable input conditions