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要求纹波要小，输出电流要到200毫安左右
请参考：
http://www.ti.com/lit/an/slva369a/slva369a.pdf
具体是什么应用？？给什么器件供电？？运放或是？？
http://www.how2power.com/newsletters/1210/articles/H2PToday1210_design_TexasInstruments.pdf
楼主你好！
使用简单的电阻分压加上电容即可。如果不考虑功耗。
Hi Billy，
这样做会有很强的负载调整率，如果正负负载不同，那分压比也会有变化。
