I am trying to understand the circuit from this datasheet so I can use it in a project. The issue I am having is how the current feedback works (circled below). OUT_IFB is the current feedback for the output circuit.
The circuit has two resistors in series (R15 and R16) which are both 4.7kohm and that I thought were originally part of a voltage divider. However, R15 connects to a microcontroller which has very high impedance so almost no current is flowing through this branch.
Is it possible that C13 and R16 are making and RC filter? If so, what is the purpose of R15/R18?
Any insight would be appreciated. Here is the datasheet, the circuit was taken from page 28.