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PTH04T230W的sense端的用法

Other Parts Discussed in Thread: PTH04T230W, LM1117

 PTH04T230W作为第一级电压变换(+5V----->1.8V),LM1117作为第二级电压变换(+1.8V----->1.2V).

那么 PTH04T230W的sense端,应该接到LM1117的输入滤波电容,还是LM1117的输入端呢?

附图如下: