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CST118F应用参考电路图及PCB布线指导
Date:March 17, 2022 Views:2406
CST118F 应用参考电路图及
PCB
布线指导:
注:在不同的应用中,C1、C2 可考虑只装一个:在 3V 应用中建议用一个 1uF 或以上;在 4.5V 应用中建议用一个 4.7uF 或以上,均为使用贴片电容;在 6V 应用中建议用一个大电容 220uF+100nF 贴片电容;C2 均靠近IC 之 VDD 管脚放置且电容的负极和 IC 的 GND 端之间的连线也需尽量短。即不要电容虽然近,但布线、走线却绕得很远(参考下图)。当应用板上有大电容在为其它芯片滤波时且离 CST118F 较远也需按如上要求再放置一个小电容于 CST118F 的 VDD 脚上。图中 C4(100nF)电容优先接于马达上,当马达上不方便焊此电容时,则将其置于 PCB 上(即 C3)。
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