How to control the LED current while using the ottima's LED drivers? (compare with the voltage mode drivers)
Only need one or three external resistors for each LED drivers to set the current of all output channels. Pin #23 is for 16 channels LED driver to connect the external resistor. Compared with the way of attaching one resistor to each pin, this way can ease the manufacturing process, simplify the process of preparing and purchasing materials and thus decrease the cost.