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求推荐一款输出电压在-2v到-3v之间输出电流400mA以上的芯片，输入电压正负都可以，正电压最好在5V到9v之间，负电压范围包涵 -5V 就可以；我知道的有LT1931 LM2661 想问问 还有什么性能比这两款好的吗？
TPS63700电流够吗？
电流有点小，怕带不起后面的负载；我用了很多块AD8000；现在还是采用LT1931了。它也是DC/DC的发热不会很厉害
