50V, 350mA surface mount LED constant current IC

These are a linear constant current driver. They have a maximum input voltage of 50 volts and have a fixed output current of 350mA. Rated power dissipation is up to 5.8W (with adequate heatsinking).

They come in a small 2 lead surface mount package (403AC case).

Use them just like a resistor. The only requirements are that you don't exceed their power dissipation rating and you connect them the correct way around!

Made by OnSemi, part number NSI50350AST3G. Datasheet is here.