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求助:关于 TPS74801 输出电压问题

Other Parts Discussed in Thread: TPS74801

大家好,我设计的TPS74801参考的datasheet原理图,希望输出1.25v,可是实际测量的时候输出是2.5V。下面是参考电路以及我的电路

匹配电阻 R1=3.16K ,R2=5.6K,求大神指导!