The PT4115B89E-B with LED Drivers SOT-89-5 RoHS is an electronic part manufactured by CR-PowTech. This part is a high efficiency constant current LED Driver designed to power up to 2W LEDs in series. It has a wide input voltage range of 4.5 to 38V, allowing it to be used in a variety of applications from 5V to 24V. This part also features a ultra-low quiescent current of only 150uA when in driver mode, making it one of the most energy efficient LED drivers out there. It also features temperature protection, over-current protection, and short-circuit protection for maximum safety. It is also RoHS compliant, making it an ideal green solution for your system.