In summary, the BD18337/347 is an ideal solution for rear lamp design applications, providing better feature sets and cost savings. The MSET1 and PBUS setting pins will provide easy and low-cost solutions to control lighting patterns when detecting any fault conditions of the lamp module. Having a 4-channel output supports large numbers of LEDs in the system, but minimizes the BOM contents in the rear lamp design. The energy sharing function not only supports thermal design on the unit, but also contributes to reducing the count of LED drivers that are required in the design.