电子元件与材料Issue(12)：61-64,4.DOI:10.14106/j.cnki.1001-2028.2014.12.016
一种分高低压供电的低压差线性稳压器的设计
Design of a LDO linear regulator with supply of low and high voltage
摘要
Abstract
For the situation of slow linear response of traditional LDO(low dropout) linear regulator with supply of low voltage, a LDO linear regulator with supply divided to low and high voltage was proposed based on BICMOS 0.5μm BCD process. The regulator was simulated by Hspice software. Results show that the regulator has high gain, high PSRR (Power Supply Rejection Ratio), low power consumption, fast response characteristics, the input voltage range of 0.5-28.0 V, the output voltage of 5 V. This regulator achieves 86 dB of open-loop gain at low frequency, the phase margin is 68º, power supply rejection ratio is–91 dB at low frequency and–2 dB at high frequency, the quiescent current is only 13.5μA.关键词
低压差线性稳压器/线性响应/BICMOS/高低压供电/PSRR/静态电流Key words
LDO linear regulator/linear response/BICMOS/supply of low and high voltage/PSRR/quiescent current分类
信息技术与安全科学引用本文复制引用
林嵩,冯全源..一种分高低压供电的低压差线性稳压器的设计[J].电子元件与材料,2014,(12):61-64,4.基金项目
国家自然科学基金资助项目（No.61271090）；国家“863”计划重大资助项目 （）
