Architectural lighting often requires multicolor LEDs. The Microchip MSL2100 LED driver IC is designed for RGB (Red, Green, Blue) applications. Lighting manufacturers use white, RGB and white with red LEDs to achieve the desired white gamut and color control. Microchip LED drivers can program the LED current to the desired peak current to set the white point. Devices such as the MSL2100 can program each string current individually to the desired peak current per string. Dimming can be achieved by PWM or by decreasing the LED constant current. The MSL2100 uses external MOSFETs to drive eight parallel strings of LEDs. The drive current is up to 1A per string, with current accuracy and matching better than ±1%. Microchip LED drivers offer two or three efficiency optimizers for each color power supply. These efficiency optimizers minimize power use while maintaining LED current accuracy, and allow up to sixteen interconnected devices to automatically negotiate the optimum power supply voltages.