数据手册上说单个LM2662可以提供200mA的电流,为了使电流更大我并联了两片2662,供电电流应该够大了,可是电压却被拉到-4.3是什么原因呢,求大家帮忙讨论讨论呀,新人求指点
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呵呵,亲;BUCK也是可以输出负电压嘀。电路结构参见这贴首楼的附件:http://www.deyisupport.com/cfs-file.ashx/__key/telligent-evolution-components-attachments/00-24-00-00-00-08-80-32/_244E4772_LM22673MR_2D00_ADJ_AF82477206522B52A74E1F752B00_15V_01302D00_15V_3575EF8D_.png
输出和地改接一下就可以出负电压啦。