Part Number: LM2903-Q1
Other Parts Discussed in Thread: LM2903


黄色的是VIN 绿色是比较器的输出
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您可以使用仿真软件验证下,是回路本身的问题,还是实装焊接或供电方面的问题:
下面是LM2903相关的应用资料,您可以尝试参考下: