Recently I have a problem about dropout voltage. I need ADP1741 to output 1.8V,the dropout voltage from ADP1741 datasheet is 280mV max,Iout=2A. Does it mean my Vin mustnot exeed 2.08V？so I cannot understand real mean about "dropout voltage".How to meet the dropout voltage in my design?Vin-Vout greater than dropout voltage or Vin-Vout less than dropout voltage,which one can make the chip ADP1741 work normally?
thank you very much
Hi Junge,In the ADP1741 data sheet, dropout voltage is defined as " the input to output voltage differential when the input voltage is set to the nominal output voltage. This applies only to output voltages…
"Vin - Vout" should be greater than dropout voltage to make ADP1741 work normally.