1.输入为24V开关电源
2.输出为17V-3.5A
焊接完成后上电LM3150在未接负载的情况下发热严重
输入电压测量为24.1
输出电压测量为18.6
问题:LM3150发烫是否属于正常,有时上电后没有输出电压,(EN脚接3.3v电),附上原理图
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