This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS7A3001输出不正确?

如下图所示,在实际电路中VIN = -24V,  R2 = 10K, R1=116.2K, 预期输出-15V, 但结果不对。

若不变R2, 把R1改为90.9K, 预期输出-12V,符合正确。

若不变R2, 把R1改为180K, 预期输出-22V,结果不对。

以上各种电阻组合,都符合Vout/(R1+R2) >= 5mA。

为什么能出-12V,就不能出-15V和-22V?运行时特意测过VIN,为-24V。