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LMR14030输出电压异常

按照典型应用搭建了一个简易电路,输出电感为33uH,空载时输出电压5V正常,在负载端介入16Ω/5W水泥电阻作为负载,输出基本为0V,测试RT/SYNC引脚对地接了47K贴片电阻,测试该引脚对地电压,电压幅值小于1V,频率仅为10多K,与规格书上波形完全不符,求解。