基于LDO稳压器的带隙基准电压源的设计  

Based on the LDO voltage regulator of design of bandgap voltage reference

作　　者：张慧敏[1] 崔新[1] 杨硕[1] 

机构地区：[1]兰州交通大学

出　　处：《电子世界》2013年第8期36-37,共2页Electronics World

摘　　要：基准模块是LDO性稳压器的核心部分，它是影响稳压器精度的关键因素之一。本文针对LDO性稳压器对基准模块一方面有较高的精度要求，另一方面又有较低静态电流要求的矛盾设计了一款简单实用的电压基准电路。仿真结果表明该电路在-40-140℃的温度系数为7．7’10^-6℃，低频时的电源抑制比可达-76dB，基准源电路的供电电压范围为2-4．5V。The base module is the core part of the LDO linear regulator, and it is one of the key factors affect the accuracy of the regulator.The ardcle in view of the linear voltage regulator to the benchmark module have higher accuracy on the one hand, on the other hand, have the low static current demand contradiction to designed a simple and practical voltage reference circuit.The tesults show that the temperarure coefficient is 7.7＇10-6℃ when the circuit is in 40 to 140℃, and the power supply rejection ration can reach 76dB when it is low frequency, and the benchmark source circuit power supply voltage in the range of 2 to 4.5V.

关 键 词：带隙基准源 LDO稳压器 温度系数 电源抑制比 

分 类 号：TN431.1[电子电信—微电子学与固体电子学]