newbie in electronics here and taking self study (don't have time to go to school anymore xD). i just want to ask, regarding the image below:
it came from this datasheet:
how could i determine how much current the IC is consuming on power lines like on voltage regulators? I see a lot of ampere value here.
1) is it the Power Supply Current? Input current? input current supplies? output current?
2) how do i make simple math given on these values?
3) upon looking on other datasheet, they don't have same descriptions, i see Ic, Icc, Iaarms, Ii, etc. What could be the common current description i need to check to determine the current consumption of IC (even on max)?
I want to learn this because i want to make a computation of how much current should a 30 pcs of the given IC here will consume overall, at max, for me to determine what output current value should my voltage regulator have. Or do i have the wrong idea on computing the current consumption in relation to voltage regulator current supply??
EDIT: giving also example of how to compute 2 to 3 different ICs current consumption having different datasheets would be also good for me to understand it clearly OR maybe the image below, how can i compute it even a rough estimation. (included the setup to be future reference for others and to be understand clearly the situation)
uC -> arduino uno https://www.farnell.com/datasheets/1682209.pdf
4 to 16 dmx -> http://www.ti.com/lit/ds/symlink/cd74hc154.pdf
Relay Hub are collection of SSRs connected to a I/O expander controlling the gnd terminals of SSR via npn transistors
I/O expander -> https://datasheets.maximintegrated.com/en/ds/MAX7317.pdf
NPN transistors -> https://www.diodes.com/assets/Datasheets/ds30384.pdf