Other Parts Discussed in Thread: TLC2252
电路图设计如下:
ENABLE引脚和IN+引脚都给了5V输入,但是输出为0,枯了枯了,调了一天也没调出来是什么问题,救救萌新吧orz
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您好,
我用TINA 仿真也是没问题的,如下截图:
建议先去掉TLC2252电压跟随器,或者验证TLC2252电压跟随器是正确工作的。
然后检查下焊接问题,或多测几款板子看输出情况?
如果怀疑运放已损坏,可以拆掉换新的芯片以验证输出