I have an lcd and its controller. But I need an backlight controller for it. I couldnt understand very well the backlight controllers logic actually. I need your suggestions:
1) My LCD datasheet shows the backlight configuration as attached. Is it possible to use this controller from aliexpress: https://www.aliexpress.com/item/LED-LCD ... 35172.html?
As far as I see I need 19V/260ma output but this pcb outputs more than it necessary. Please advice me.
2) I would like to understand backlight driving logic, so I need a documentation. Are there any kind of tool available to create automatic schematics for my configuration?
3) Why the led strip have + and - ? Or just positive and ground?