公开(公告)号：US20190064860A1

公开(公告)日：2019-02-28

申请号：US16170124

申请日：2018-10-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gyu-Hyeong CHO ,  Yongjin LEE ,  Dae-Yong KIM ,  Sangho KIM

IPC: G05F1/56 ,  H03K21/02 ,  H03K5/1534

Abstract: A low dropout voltage (LDO) regulator including: a coarse loop circuit configured to receive an input voltage, generate a coarse code and adjust a coarse current according to the coarse code; a digital controller configured to receive the coarse code and generate a fine loop control signal according to the coarse code; and a fine loop circuit configured to receive the input voltage and the fine loop control signal and adjust a fine current according to the input voltage and the fine loop control signal, wherein the coarse current and the fine current adjust a level of an output voltage.