公开(公告)号：US20220109415A1

公开(公告)日：2022-04-07

申请号：US17232762

申请日：2021-04-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngbae MOON ,  Woonyoung LEE ,  Chanbong YU ,  Yunseok JANG

IPC: H03F3/45 ,  H02H9/04 ,  G09G3/3275

Abstract: An output buffer circuit includes an operational amplifier configured to generate an amplifier output voltage signal based on an input voltage signal and on a compensation current, a slew rate compensating circuit configured to generate the compensation current to increase a slew rate of the amplifier output voltage signal based on a difference between the input voltage signal and a feedback voltage signal, an output path circuit connected between the operational amplifier and an output pad, the output path circuit configured to transfer the amplifier output voltage signal to generate a pad output voltage signal through the output pad, and a feedback path circuit, the feedback path circuit connected between the slew rate compensating circuit and a feedback input node that is on the output path circuit, the feedback path circuit configured to generate the feedback voltage signal.