芯片是否存在两种丝印,新款与老款之分,还是版本的问题,用在相同的PCB上
本次采购的无法正常驱动24V直流电机了,电流达到0.3a就截止输出了,按设计能达到2.5A,之前采购的芯片(老款)是可以达到的
之前的
本次采购丝印如下
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