Driving the backlight LED for NHD-C12864WC-FSW-FBW-3V3
The LED voltage for the NHD-C12864WC-FSW-FBW-3V3 is specified as 3.0V at a current of 36mA. Does this mean that there is an internal current limiting resistor? None is shown in the drawing.
Although I don't expect to go there, what is the maximum current for the LEDs? (I plan to use a dimming circuit that will allow the user to adjust the backlight.)
This display does not have a current limiting resistor, one should be used when powering the backlight.
The maximum current for the backlight on this display is 50mA.0
I am using this model for my project with 3V3 voltage with one TPS61201, http://www.newhavendisplay.com/specs/NHD-C12832A1Z-FSR-FBW-3V3.pdf
It suffices with one resistor or is it better to use a 3.0V LDO?
It is typically preferred to supply the displays Typ. Voltage when ever possible, however in your case supplying 3.3V is perfectly acceptable :)0
Then I'll used 3V3 for supply and backlight.
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