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 (BCG). The proposed LDO employs the load current tracking BCG 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−1 load regulation, and 2.2 mV V−1 line regulation.