REF3450: REF3450

Hi Abba,

The REF34-Q1 has a dropout voltage relative to the load current drawn. At its highest the dropout voltage is 500mV. In the case where the voltage goes below this needed Reference voltage + droput = 5V + 0.5V = 5.5V, the output voltage will drop with the input voltage as input voltage minus dropout voltage.

Thanks,
Joshua

does it mean if the input voltage is 4V, the output voltage will be about 3.5V?

Hi Abba,

Yes your example is correct.

Thanks,
Joshua