Author Topic: current consumption of character OLEDs  (Read 43 times)

jinuos

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current consumption of character OLEDs
« on: July 13, 2018, 02:56:37 AM »
I am considering to use one of the character OLEDs, and have a couple of questions about current consumption.

1. Slim character OLEDs such as NHD-0420CW-AG3 support both 2.8V and 5V supply voltage. For the reference, my supply is 3.3V.
    Datasheet shows that current consumption is 70mA typ. and 135mA max.
    Are those figures the measured results @ 2.8V or 5V?
    For the normal character OLED, is current consumption @ 2.8V different from the current @ 5V?

2. The gap between 70mA typ. and 135mA max. seems to be large for me.
    So I want to know which condition is typical or max.
    If I light up all the characters of 4 lines x 20, I guess that's the max. current condition. right? If I reduce the usage of char as possible as I can, can I reduce current consumption? If so, how much?

3. Standard character OLED, NHD-0420DZW-AY5, which is smilar to the slim character OLED NHD-0420CW-AG3, also support 3V to 5.3V supply voltage. And its datasheet shows that the current consumption is 46mA min., 55mA typ., 73mA max at 5V supply condition. If I use NHD-0420DZW-AY5 @ 3.3V supply, the current consumption increases? If so, how much?

4. I use 3.3V voltage supply. which product has better performance of current consumption, slim character OLED? or standard character OLED?

 

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