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LM5156: 空载时,8V输入电流超过120mA。

Part Number: LM5156


Referring to the "minimum size" design, the working frequency is 1.97MHz, and the wiring art XAL6030-332ME inductor; input 6-9V, output 32V*1A power supply system; when the input is 8V, when there is no load, the input has a current of 120mA; M1 device ( The lower tube N-MOS) is very hot; and when the input is 8V, the efficiency is only about 82% when the load is 32V*0.5A.