The PT4515ETOW is a fully integrated LED driver produced by CR-PowTech. It is in a TO-252-2 (DPAK) RoHS compliant package. The device includes a low dropout regulator to regulate the output voltage, power switch, and over-temperature protection. It features a wide operable input voltage range, constant output current, low standby power dissipation, short circuit protection, and thermal shutdown protection. The PT4515ETOW is ideal for driving either a single LED or multiple LEDs in parallel from a battery or USB source.