TPS61194: What's the current accuracy and side effect when Iout lower than 40mA?

Hi Sean,
Thanks for your reply!
I would like to sure there are no side effects when the current is set below 40mA except the sink current mismatch by each channel.
Regards
Aaron

Hi Aaron,
The accuracy and mismatch should be a little worse comparing with the Figure 7, but it is around that number. So don't worry about that.
Regards
Sean

Hi Sean,

I would like to know that the current mismatching (fig.7) means between each channel (A1~A4) or each channel compare with the Isink setting?

Thanks

Hi Aaron,
Output Current Accuracy is the difference between the actual value of the output current and programmed value of this current.
Matching is the maximum difference from the average. For the constant current sinks on the part (OUTx), the following are determined:
the maximum output current (MAX), the minimum output current (MIN), and the average output current of all outputs (AVG). Matching
number is calculated: (MAX-MIN)/AVG. The typical specification provided is the most likely norm of the matching figure for all parts. LED
current sinks were characterized with 1-V headroom voltage. Note that some manufacturers have different definitions in use.
Regards
Sean

Hi Sean,

I measured the sink current on each channel, and I made a mismatching table.

Please help to check the table as below is correct.

 

Thanks!

Hi Aaron,
Yes, it seems right.
Regards
Sean