便携式手持电池供电设备的使用呈指数级增长,导致设计人员将重点放在电源管理技术上。 低压差(LDO)线性稳压器由于其低噪声,精确的输出和快速的瞬态响应而被广泛用于电源管理。 由于对低功耗的需求不断增长,因此将修改稳压器的规范,使其具有非常低的压差,低静态和快速的瞬态响应。 在所有设计解决方案中,“完全可集成系统”或“片上系统”也是最理想的方面。高电流效率是导致电池寿命提高的主要因素之一。 所有这些因素促使设计人员朝着完全集成的LDO稳压器的方向发展。
Exponential increase in the usage of the portable handheld battery-operated devices led the designers to focuson the power management techniques. The low-dropout(LDO) linear regulator is widely used in power managementdue to its low noise, precision output, and fast transientresponse. Due to the ever increasing demand for low powerconsumption, the regulators’ specification is to be modifiedwith very low dropout, low quiescent, and fast transientresponses. Also “fully integrable system” or “system on chip”has been the most desirable aspect of any design solutions.High current efficiency is one of the major factors as it leadsto improvement of battery life. All these factors motivatethe designers towards the fully integrable LDO voltageregulators.
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