FAQ

"Surge" mean a "sudden electric wave",like "current impuls" and "voltage impulse"

Suggest a few series connection and more parallel connection for power design on long link,it could avoid more voltage remaining on link line,the voltage upder VDD make Driver IC unworkable.

When Current of system switching making noise and surge into VDD,you could set a stabilized voltage capacitor for protecting Drive IC to avoid effect on noise and surge.

In design,Vout of IC should keep on Vsat+0.1~0.2V,it could make Driver IC working on constant current.

You could set a parallel connection CEXT to steady VREXT,it can steady output of current.

The LED driver IC usually control the IOUT by EN Duty cycle,so you should setup over minimal width of EN signal pulse of driver IC,otherwise IOUT couldn't meet the maximal OUTPUT current.