Design a BUCK circuit with LM3404HV, Applied to outdoor batteries for blue LED fishing lights; The input is 24V battery voltage and the output is 3.3V LED lamp voltage. Oil Immersed Transformer,Hermetically Sealed Oil Filled Transformer,Immersed Transformer,Oil Filled Distribution Transformers Tianhong Electric Power Technology Co., Ltd , https://www.tianhongtransformer.com