一种基于ATE的LDO测试开发方法

A test development Method of LDO based on ATE

LDO(Low Drop Output)即低压差调整器,作为常用的线性电压调整器,常常需要考虑技术指标是否符合使用需求,以及输出精度、线性度、负载能力等问题。因此,必须对其相关技术指标进行精准有效的测试。本文阐述了一款低压差调整器的测试开发。测试开发平台是华峰公司的STS8200。文章对LDO的5个重要参数(输出电压、线性调整率、负载调整率、压差电压、静态电流)的测试方法和测试程序进行了探讨,进一步阐明了测试源表的合理利用对测试稳定性和测试有效性的重要性。

LDO(Low Drop Output)is the low drop voltage regulator.As a common linear voltage regulator,it often needs to consider whether the technical specifications meet the requirements,whether the output accuracy meets the requirements,what about the load capacity?Therefore,it is necessary to test the relevant technical s accurately and effectively.This paper describes the development of a low drop voltage regulator test.The test development platform is STS8200 of Huafeng Company.This paper discusses the test method and procedure of five important parameters of LDO(VOUT,Sv,Si,VDO,Iq),and further illustrates the importance of reasonable use of test source meter to test stability and validity.