AN4291 Datasheet, PDF (10/53 Pages) STMicroelectronics – STEVAL385LED4CH: four independent high brightness LED

Getting started with the STEVAL385LED4CH demonstration board
AN4291
Warning:
The current level has to be configured according to the LED
capability. A current level higher than the one supported by
the LED may damage the LED itself.
12. Switch OFF the dimming using the "ll x 0" command where "x" is the channel number
selected to drive the LED string. Once the dimming is disabled, channel x doesn’t
generate current.
13. Connect the LED string to the appropriate channel "x" connector. Please observe the
LED polarity. The following picture illustrates how to connect a LED string.
Figure 3. LED string connection
14. Increase the dimming level using the "ll" command and observe the LED string
switching ON.
15. Enable the adaptive voltage compensation using the "au x 1" command.
10/53
DocID024519 Rev 1