WEO012864HWPP3N00000 Steady State Current Draw

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What is steady state and transition current draw.

Data sheet shows 10uA continuous from the IREF pin & 22mA check board operating current.

Unsure of what check board is, and if this is steady state, or dynamic current draw.

Thanks,

Brian

Hello binman,

The datasheet mentions that “50% Check Board operating Current” at 13.0V being 18mA, with the max being 22mA. There are a few key pieces here I think that breaking down will make it much easier to evaluate. A check board, from my understanding, is akin to a test board. That is to say it’s a board that the manufacturer is using to test the product. The 50% I believe refers to the number of pixels on at a normal brightness. In most conditions, not all of the pixels will be on, but it’s expected that some will be on at almost all times. As such, they test it at 50% on to simulate the average.

This also assumes that you will want to budget for a little more than 22mA in the event you do have a large percentage of pixels running as it will be dynamic number, however if you account for 50% being about the amount of pixels on during normal operation you could consider that as steady state.

Regards,
Klint

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