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LM5085的输出电流调整问题。

Other Parts Discussed in Thread: LM5085

现在我想用LM5085做一个输入电压:5.5V-6V左右;输出电压:3.3V 6.5A的电源

原理图如:http://www.deyisupport.com/question_answer/f/24/t/18701.aspx 帖子中所示。

关键器件参数修改如下图所示:

现在的问题是它的输出电压在3.0V的输出电流只有3.5A?我调整了RDJ没有效果是怎么回事?还是我要调整RT的阻值?求解答。