Curiosity killed my device. I was keen on confirming my theory of operation of my Philips Lumea SC1992, but in the process of tearing it down (ugly one way clip mechanism) I killed R202, unable to find it again.
It seems they're using the L6562A to charge the capacitor, the resistor in question was connected between the CS pin and the 100 Ohms current shunt resistor. Unfortunately I didn't figure out how to calculate R202, maybe someone can give me a pointer? The datasheet for the L6562A unfortunately doesn't give many formulas, and the reference schematics also don't fit the use case.
Maybe someone has a (defective) device and can measure R202 for me?