Current-controlled mode

Current-controlled operation of multi-color Common Anode LEDs is also possible with the EL2596 from FW04. In this case, LEDs can also be operated without series resistors. This requires the “Current sink PWM” operation mode to be used. The commissioning is described step-by-step in the chapter Current Sink PWM.

The connection in this mode is possible as shown above. The color that requires the highest voltage should then also provide the voltage for the other colors. The anode is also connected to LED+ (9) at the terminal to which the cathode of the LED with the highest voltage is connected. This terminal must not be in “Current Sink PWM” mode, but in “Current Control” or “Current Control PWM”. The other LED colors are then each connected to one LED- (1) of an EL2596, which is operated in “Current Sink PWM” mode. Alternatively, the anode can be connected via an external supply, in which case all EL2596s are operated in “Current Sink PWM” mode.