A Novel Off-Chip Capacitor-Less CMOS LDO with Fast Transient Response
A novel Low-DropOut (LDO) regulator without external capacitor featuring with fast transient response and low-power dissipation for System-On-Chip (SOC) is proposed in this paper. By introducing an auxiliary feedback path to splits the poles without using a miller compensating scheme, the proposed LDO achieves fast transient response and high stability under all operating conditions. In addition, the transient response is further improved for a buffer stage is utilized. The proposed LDO with a dropout voltage of 200 mV was fabricated in a 0.35um CMOS technology.