手机中各部分电路所需LDO如何选择Selecting LDO Linear Regulators for Cellphone Designs | ||Abstract: Low-dropout LDO linear regulators are used to power ||many sections of a typical cellular handset. However, these ||baseband, RF, and audio sections have different requirements ||that influence which LDO is most appropriate. After discussion ||of the specific requirements, different LDOs are recommended. ||Also, some LDO design techniques are briefly discussed to ||demonstrate how an LDO may be optimized for a specific level of ||performance. ||Cellular phone designs require linear regulators with ||low-dropout, low-noise, high PSRR, low quiescent current (Iq), ||and low-cost. They need to deliver a stable output and use ||sma……
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