AN4291 Datasheet, PDF (1/53 Pages) STMicroelectronics – STEVAL385LED4CH: four independent high brightness LED

AN4291
Application note
STEVAL385LED4CH: four independent high brightness LED
channels using the STLUX385A digital controller
Introduction
The STEVAL385LED4CH demonstration board is a complete and configurable solution to
manage four independent high brightness LED channels using the STLUX385A digital
controller, which embeds advanced peripherals tailored to generate high resolution PWM
signals. The LED current is independently regulated by the fixed-off-time (FOT) principle on
each channel.
This document describes how to use the STEVAL385LED4CH board, the hardware and the
firmware implemented on the board as well as the relevant measurements. The
STLUX385A shipped with this board has already been programmed with firmware tailored
for the STEVAL385LED4CH application and the source code is available.
The following picture gives an overview of the demonstration board diagram.
Figure 1. Demonstration board diagram
Buttons
Channel 0
DALI
SWIM
STATUS
UART
STLUX
Channel 1
Channel 2
-
+
Power in
Channel 3
AM16703v1
June 2013
DocID024519 Rev 1
1/53
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