Tuesday 8 November 2016

power - How much current does a microSD card use?


I am building a uC board which uses an 3.3V microSD card as a storage medium. To design the switching power supply for the 3.3V, I have to know what my total current draw from the supply will be. I have average and peak current values from datasheets for all my other parts on the board, for example, SDRAM, LCD, etc., but can't find general info online about the microSD card.



Answer



According to this spec, the maximum current draw is 80mA.


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