建议大家不妨多了解一下AX3003和AX3005。  可同步取代AP1506/AP1507技术参数参考如下：InputRange:40V(Max)12to3.3(2A)Efficiency:8012to5(2A)Efficiency:84Availability:NOWFeatures:b,c,e,fFrequency:150KhzOutputCurrent:3AOutputVoltage:12,5,3.3,Adj(1.23)PackageType:TO263-5AX3005StanbyCurrent:100uA      需详细资料的可联系我。 深圳市速芯科技有限公司0755-82524998赵先生QQ：785953770