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.)
Thanks
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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 -
Hello,
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?
TPS7703DBVR
http://www.ti.com/lit/ds/symlink/tps770.pdf
Regards0 -
Morning,
It is typically preferred to supply the displays Typ. Voltage when ever possible, however in your case supplying 3.3V is perfectly acceptable :)0 -
Thanks Paul,
Then I'll used 3V3 for supply and backlight.
Best regards
--Javier0
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