LD48AJTA FAQ

I have bought serval of your LD48AJTA as LED Driver

I want to control the LED power with the PMW Input. And here I have a question:
PMW is clear the input signal.

But what about the GND?
(a) Is this an independent ground from the MCU (3,3V) just for the signal,
(b) or is it connected with the ground of the Power-Input for the LED (24V)?

The GND port next to PWM is the PWM negative signal input port. If your PWM signal is generated by MCU, then the GND of the module should be connected to the GND pin of MCU.