A low dropout voltage regulator with programmable output

Ying Cheng Wu, Chun Yueh Huang, Bin-Da Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

In this paper, we present a low dropout voltage regulator (LDO) which can be programmed to generate four output voltages (3.3 V, 2.5 V, 1.8 V, and 0 V) by the external control signals. Between the error amplifier and the power transistor, we place a simple buffer so that the power supply rejection (PSR) of LDO can be improved. The design specification of the maximum load current is 100mA. The proposed LDO is designed by the 0.35μm CMOS 2P4M process technology and simulated by HSPICE. Simulation results show that the maximum transient-output variation (overshoot voltage) is about 50 mV with full-load step change of 100 mA and the PSR is larger than 60dB for different output voltages. Therefore, the proposed LDO can be applied for power management systems in system-on-chip (SOC), where the output voltage can be changed by control logic to optimize the power consumption of supplied device.

Original languageEnglish
Title of host publication2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009
Pages3357-3361
Number of pages5
DOIs
Publication statusPublished - 2009 Sep 28
Event2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009 - Xi'an, China
Duration: 2009 May 252009 May 27

Publication series

Name2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009

Other

Other2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009
CountryChina
CityXi'an
Period09-05-2509-05-27

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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