Low noise LDO architecture with consideration for low voltage operation

Abstract

High performance low dropout regulator (LDO) is presented in this paper. An analysis of low noise architecture incorporating reference amplifier followed by a low-pass filter (LPF) and an error amplifier (EA) connected as a voltage follower is done, with a special focus on the low voltage operation implementation. By introduction of special design approach of error and reference amplifiers, low voltage operation of the regulator was achieved. This LDO is ideal for supplying sensitive loads in low power applications.