LDOs perform a vital function in system power design and are widely used across a variety of applications. For most applications, a datasheet’s specifications of basic parameters are clear and easy to understand. Unfortunately, datasheets don’t list the parameters for every possible circuit condition. This white paper examines the key performance parameters of LDOs and their impact on delivering clean output voltage to the various devices inside an electronic system. It also discusses the factors a designer must consider to optimize a system, especially at higher current levels.