| 一种基于低压差线性稳压器的放大器设计 |
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| 引用本文： | 樊华,冯全源. 一种基于低压差线性稳压器的放大器设计[J]. 固体电子学研究与进展, 2007, 27(1): 100-103 |
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| 作者姓名： | 樊华 冯全源 |
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| 作者单位： | 西南交通大学微电子研究所507信箱,成都,610031;西南交通大学微电子研究所507信箱,成都,610031 |
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| 基金项目： | 国家自然科学基金 , 企业资助的项目 |
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| 摘 要： | 设计了一种静态电流约为0.6μA的运算跨导放大器电路,并已经成功地应用于一款超低静态电流的新一代低压差线性稳压器芯片中。此放大器的突出优点是与Foldback过流保护电路融合在一起,使得芯片不需要专门的限流模块,大大减少了器件与电流支路,极大地提高了电流利用率,实现了超低功耗。
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| 关 键 词： | 运算跨导放大器 静态电流 低压差线性稳压器 Foldback过流保护 |
| 文章编号： | 1000-3819(2007)01-100-04 |
| 修稿时间： | 2005-04-04 |
Design of OTA Based on LDO Regulator |
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| FAN Hua,FENG Quanyuan. Design of OTA Based on LDO Regulator[J]. Research & Progress of Solid State Electronics, 2007, 27(1): 100-103 |
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| Authors: | FAN Hua FENG Quanyuan |
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| Affiliation: | Institute of Microelectronics, Southwest Jiaotong University, Chengdu, 610031, CHN |
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| Abstract: | An operational transconductance amplifier(OTA),which has been successfully applied to the chip of ultra-low power low-dropout(LDO) voltage regulator is presented.The quiescent current of the amplifier is only 0.6 μA.Moreover,this amplifier reaps the benefit of incorporating a foldback current limiting circuit,which enables the LDO chip to work without the need of special current limiting subblock.Therefore,the object of ultra-low power is realized because of great reduction in transistors and current limbs. |
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| Keywords: | OTA quiescent current LDO foidback current limit |
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