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bq24072 input current exceed USB500

Genius 3475 points

Hi

 

I have the EVM set at EN2/1 = 0/1, which is the USB500 setting. My understanding is this would limit the max input current to 500mA, which is what i need.

However, when i power up the circuit, I can see the circuit drawing 600mA instead.

 

I see on figure 37 of the datasheet that in the region before DPPM Loop is active, when the Iout is drawingexample 200mA, the Iin could be 700mA. So is there a limit or not of USB500?

Ivan