Features? Built 600V power MOSFET? Without auxiliary coil power? SOP8 (DIP8) package, the output current can be up to 260 (350) mA? Bottom switch, high efficiency, low EMI? PF can be adjusted to 0.9? Automatic compensation inductance change in inductance ? The output voltage automatically adapt to changes in temperature protection Short circuit protection Overvoltage protection open fewer external components Operating temperature:?????? -40 ~ 100 ℃ Package:? SOP8, DIP8 Overview R9128 is a dedicated non-isolated Buck LED constant current driver IC, the system works in the bottom of the switch mode, high conversion efficiency, EMI low, PF can be adjusted to 0.9, the output current is automatically adapted to sense the amount of inductance change and change in output voltage, thus truly a constant current LED driver . R9128 integrated 600V power MOSFET, using SOP8 (DIP8) package, the output of up to 260 (350) mA current, the external device requires only a few can achieve excellent constant current output. R9128 integrates a rich protection features include overvoltage protection, short circuit protection, cycle-by-cycle current protection, thermal protection and soft start. R9128 has a very low start-up current and operating current, may be in the full voltage AC input (85VAC ~ 265VAC) range of highly efficient drive the LED. Applications LED drive power