VNI8200XP
LED driving array
11 LED driving array
The LED driving array carries out the status of the output channels (ON or OFF).
Figure 9: LED driving array
The following equation is an indication how to choose the Rext resistor value:
Rext= (VCOLmin.) - (VROWmax.)- VF(LED) / IF(LED)
where IF(LED) ≤ 7 mA and (VCOL min.) and (VROW max.) can be found in and VF(LED) and IF(LED)
depend on the electrical characteristics of the LEDs.
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