Hi Sami,

Sami Peräsalo said:

Let's say my full scale current is 500mA and a DC voltage is used for dimming. Am i to expect 475mA - 525mA output due to the accuracy at this full scale current?

Yes, you are correct.

Sami Peräsalo said:

I then use the dimming input to set the current to 10% of full scale, 50mA, can I expect the 5% still hold to give me a range of 48mA to 53mA, or will it be in the range of 25mA to 75mA (+-5% of full scale current)?

You can refer to this spec in Section 7.5 Electrical Characteristics from the datasheet.

You can see in the larger-current condition (V_IADJ = 1.2V), the output current accuracy is around +-5%. But in the lower-current condition (V_IADJ = 0.18V), the output current accuracy is from -28.7% to 33.3% (of the lower-current value, not the full-scale current).

By the way, I would recommend you switch to the next generation of TPS92513, which is TPS922053. Generally, TPS922053 has better current accuracy than TPS92513.

Best Regards,

Steven