Hi
I am working on a LED array controller based on PAM2863ECR LED driver IC controlled by a microcontroller atmega328p (datasheet: https://datasheet.lcsc.com/szlcsc/1811151536_Diodes-Incorporated-PAM2863ECR_C80312.pdf).
My problem is that the driver IC requires an "[Drive with] PWM signal from open-collector or open-drain transistor, to adjust output current. Adjustment range 1% to 100% of IOUTnom for f < 500Hz" (quote from datasheet). My problem is that i haven't heard anything about "open collector/open drain".
The results of my research so far is that I cant simply connect it to a PWM pin of the microcontroller. The solution I came up with is to place a cheap MOSFET in the date line as shown in the picture.
Is this a suitable solution?
Thank you for your help.
Matthias
I am working on a LED array controller based on PAM2863ECR LED driver IC controlled by a microcontroller atmega328p (datasheet: https://datasheet.lcsc.com/szlcsc/1811151536_Diodes-Incorporated-PAM2863ECR_C80312.pdf).
My problem is that the driver IC requires an "[Drive with] PWM signal from open-collector or open-drain transistor, to adjust output current. Adjustment range 1% to 100% of IOUTnom for f < 500Hz" (quote from datasheet). My problem is that i haven't heard anything about "open collector/open drain".
The results of my research so far is that I cant simply connect it to a PWM pin of the microcontroller. The solution I came up with is to place a cheap MOSFET in the date line as shown in the picture.
Is this a suitable solution?
Thank you for your help.
Matthias