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LM3150上电后响电感发烫

Other Parts Discussed in Thread: LM3150

按照手册推荐在电路,因为电感买不到,替换为2.2UH,上电后空载也会响,加负载后特别烫,输入为12V,输出3,.3V,按照手册的电阻实际测量为3.5V,纹波大概400MV,想问下是电感的问题吗,帮忙推荐一个可替换的电感