MAX8815A Output Maximum Current based on Input Voltage Level

[joersam24]

Hi to all,

I'm planning to use MAX8815A DC-DC Step-up converter in our project. It is stated in its datasheet that at 5V output it can output 500mA from 1.8V input and 1A from 2.5V input... My question is does it capable to output more than 1A of current if the input voltage is 4.5V~5V? Its switch current limit is 2.5A.

Does anyone knows the basic formula to compute maximum output current of DC-DC Converter?

[mariush]

Page 4 answers  your questions.

Maximum load current vs input voltage...

vout = 5v ... follow the line... 2.2v for about 0.8A , 2.7v for about 1.05A, 3.2v for  > 1.3A

[joersam24]

Thanks for the info mariush, but I want to know its maximum current at Vin=4.5V~5V... Does anyone knows the formula on how to compute? thanks...