How to use PWM Dimming function in applications?

- Dec 11, 2018-

As shown in fig11&12, an external signal can be applied to “DIM+” and “DIM-.” The signal can be either DC voltage (D Type) or PWM (P Type). By changing the signal levels as shown below, the output current limit can be controlled by the user. Please note, the relationship between external signal and output current level is non-linear. It cannot be used for high precision dimming control.