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求推荐5V转正负15V运放供电电路或芯片。

Other Parts Discussed in Thread: LM2587, LM2588, TPS65130

USB供电转正负15V供电,大概给3个运放供电,运放功耗300MW左右,应该能带的动吧。求推荐相关电路或者芯片,多谢大神