A constant‑brightness RGB LED driver is implemented using the GreenPAK SLG46580V. Analog comparator (ACMP) feedback senses the voltage drop across each channel's current‑limiting resistor and toggles on‑chip power switches that charge the output capacitors, maintaining an average regulated LED current. The current level and channel enable are adjustable via I²C. This application note discusses resistor/capacitor selection, ripple versus start‑up trade‑offs, and bench data validating accuracy and response.