Hi
I could do with some help understanding this data sheet for an optoisolator.
https://toshiba.semicon-storage.com/info/docget.jsp?did=60600&prodName=TLP176AM
I want to calculate the resistor I need for the LED.
I will be powering it from a 4.2v supply. As I read it, on the first page, the current I need to switch the LED on is 3mA - or is this the maximum current? Further down the sheet on table 6 it says maximum current is 30mA.
Then on table 7 it says maximum forward current is 25mA.
Is one of these referring to the current the isolator can carry on the switch side? If so, what is the maximum?
I’m pretty confused ...
I could do with some help understanding this data sheet for an optoisolator.
https://toshiba.semicon-storage.com/info/docget.jsp?did=60600&prodName=TLP176AM
I want to calculate the resistor I need for the LED.
I will be powering it from a 4.2v supply. As I read it, on the first page, the current I need to switch the LED on is 3mA - or is this the maximum current? Further down the sheet on table 6 it says maximum current is 30mA.
Then on table 7 it says maximum forward current is 25mA.
Is one of these referring to the current the isolator can carry on the switch side? If so, what is the maximum?
I’m pretty confused ...