Hi team,
My customer wants to clarify max output current variation of TLC5941 including errors introduced by load and line regulations.
1. Do you have any data for the max output current variation?
I'm asking this questions because IO(LC) looks that it doesn't include errors introduced by load and line regulations.
2. As one quick confirmation. "Device to Device" and "channel to channel" variation are involved in IO(LC), right?
3. If you don't have the data, Can we estimate the max value by following equation?
Max error range(480ohm) = (ΔIO(LC)^2+ΔIO(LC3)^2+ΔIO(LC3)^2)^(1/2) = (13.12^2+6^2+8^2)^(1/2) = 16.5%
Here is my understanding of each parameter in the datasheet
IO(LC) : Estimated output current range under VO = 1 V, R(IREF) = 640 Ω(Vo and IREF dependency are not included)
ΔIO(LC0) : Channel to Channel output current error
ΔIO(LC1) : Device to Device output current error @ 20mA
ΔIO(LC2) : Device to Device output current error @ 80mA
ΔIO(LC3) : Output current error depending on VCC
ΔIO(LC3) : Output current error depending on VO
Regards,
Takashi Onawa