Ultra-low power low-dropout linear regulator with a load current tracking bias current generator for loT devices

Abstract

This paper presents an ultra-low power low-dropout (LDO) linear regulator with a load current tracking bias current generator. The proposed LDO employs the load current tracking bias current generator to achieve stable and ultra-low power operation. The measurement results demonstrated that the proposed LDO produced a 1.2-V output and achieved 78-nA quiescent current, 145-mV/mA load regulation, and 2.2-mV/V line regulation.