tl431 过压/欠压保护 稳压器的典型应用。 tl431 是 3 端子可调精密并联稳压器，可在适用的扩展商业温度范围内保证温度稳定性。只需选择两个充当分压器网络的外部电阻器，即可将输出电压设置为大于 2.495v (vref) 直至 30v 的任何电平。 这些器件的典型输出阻抗为 0.08 欧姆。

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