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tps60400输出反向电压的问题

Other Parts Discussed in Thread: TPS60400, TPS60403, LM2776

ti工程师:

           很简单的tps60400,完全按照手册连接和制作PCB(电容按手册提供的型号购买),空载输出正常(+5,-5),加上负载电压降为-4.4v,难道淘宝有假货。请工程师指点,ti的指定代理商能否提供。