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想用lm27762正输出用于运放等模拟电路供电。负输出用于运放供电。lm27762用于5v产生+3.3v和-3.3v. 5v由开关电源芯片从24v生产5v。在社区看到有人因为lm27762由于输入电源由开关噪声,lm27762工作不稳定,非常担心。
想咨询下lm27762是否对供电等要求较高。还是单独用电荷泵+LDO较为稳妥。