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关于LP2989的电压差 Dropout Voltage:



数据表中:

7.4.1 Operation With 16 V ≥ VIN > VOUT(TARGET) + 1 V
The device operates if the input voltage is equal to, or exceeds VOUT(TARGET) + 1 V. At input voltages below the
minimum V
IN requirement, the devices does not operate correctly, and output voltage may not reach target value.

这段话的意思是否是说:输入电压必须大于输出电压1V以上,输出电压才能达到输出值。也就是电压降至少1V才能正常工作。

这是否和低压差矛盾,最低电压差为310mV(Dropout Voltage: Typically 310 mV at 500-mA load,and 1 mV at 100-µA load.)