When choosing a driver, it is important to understand the total cost/benefit relationship between a module and a discrete solution. There are a number of fallacies concerning discrete solutions that need to be taken into account. Fallacy number one: discrete solutions are “always” cheaper. This is actually false in many cases once the total cost is evaluated which include the bill of materials cost, development time, testing and approval costs. Fallacy number two: discrete solutions are “better” than modules. This is also false in many cases once all of the parameters are considered such as accuracy, input voltage range, operating temperature range, MTBF, EMC, etc. Fallacy number three: discrete solutions need less board space. This also false in many cases because driver modules have been optimized to reduce size. To understand the advantages of driver modules over discreet designs, the whole system and the design cycle must be considered. A modular LED driver is a plug and play solution, but an IC driver needs many additional components and requires a significant amount of design time.