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求一款可输出正负5V电平电源芯片

Other Parts Discussed in Thread: TPS54160, MC33063A, LM25574, LM22672, TPS54060, TPS54040

求一款可输出正负5V电平电源芯片,要求指标为:最大30V输入,5V输出,500mA驱动能力。可以是一个片子能输出正负5V也可以是用2片能输出正5V和负5V电平。因负5V负载比较小,因此不需要太大驱动能力。