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LDO的参数怎么理解,可以作为负压基准源吗?

Other Parts Discussed in Thread: TPS7A30, OPA177

目前想得到一个-5V的基准电压,可以用-12V转化得到-5V吗?

TI的负压LDO TPS7A30指标中有一项Accuracy 为2.5%,它是说明每一个LDO芯片的输出电压在设定值的2.5%上下浮动吗?还是说明不同LDO芯片的输出电压具有离散型,不同芯片的输出电压可能相差2.5%?

怎样理解,盼大神相告!