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求推荐一个电源转换芯片

Other Parts Discussed in Thread: TPS62150

需求是这样的:输入电源是12V-15V,要求输出是5v 1A就可以,然后静态电流小(因为是用锂电池长期不间断供电),希望有EN脚控制电源小于一定电压就断开,输出稳定,用于给nA,uA电流信号,给运放芯片供电所用。请大家推荐一个芯片,谢谢大家。