Customer requests the current spec required for EN pin.
Unlike other devices that specify this spec in the table, TPS54519 does have a graph as below. Is it because this device has internally pull-up current source?
I'm confused with what this graph say, but in terms of the negative value in the graph, I believe that EN pin will 'source' (not 'consume') the current. And the gray line is saying that EN pin will source -0.5 to -1uA by internal current source if the pin pulling below 1.18V (threshold), and the purple line is saying that EN pin will source -3.5 to -4uA if the pin exceeding 1.18V. Could you correct it if any misunderstanding here?
Plus, customer basically requires this spec to estimate if the current consumption is met to the sequencer's possible sourcing current spec. If this device has a negative EN pin current, it will supply the current into the sequencer, right?
For your information, they don't use this pin as UVLO. It's only connected with the enable signal from the sequencer.