The LC5547LF is an high-efficiency LED driver IC that is manufactured by Sanken. It has a TO-220F form factor and meets the requirements of the RoHS directive. This IC has three distinct operating modes which allow for flexibility in design choices. It also has a number of unique features such as temperature control, open/short circuit protection, and undervoltage lockout. There is also a comprehensive set of protection functions including voltage limiting, current limiting, frequency dithering, and thermal overload protection. The LC5547LF is ideal for small to medium sized LED lighting applications where low power consumption and high efficiency is of the utmost importance.