STEVAL385LED4CH Datasheet, PDF (1/10 Pages) STMicroelectronics – Adjustable LED current and dimming

STEVAL385LED4CH
200 W, digital 4-LED channels demonstration board with
STLUX385A-controlled current regulation and dimming
Data brief
Features
 Based on the STLUX385A digital controller
 Up to 200 W
 4 LED channels
 Adjustable LED current and dimming
 Adaptive voltage compensation
 Real-time fault detection and protection
(e.g: short or open circuit)
 Serial interface
 DALI (optional)
The STEVAL385LED4CH device implements
inversed buck topology to drive each LED
channel. The SMED technology integrated in the
STLUX385A device regulates the LED current,
exploiting the fixed-off-time (FOT) principle. Each
channel can output current in the range of
250 mA to 1 A.
The number of LEDs, the current and the PWM
dimming working point can be set through the
command interpreter, accessible via the serial
interface. Dimming can also be manually adjusted
via the three on-board buttons.
The demonstration board can be optionally
controlled via a DALI interface. The DALI
connection board is available separately (part
number STEVAL-ILM001V1). The STLUX385A
DALI software drivers and application firmware
are available.
This demonstration board is available also with an
order code STEVAL-ILL057V1.
Description
The STEVAL385LED4CH demonstration board is
a complete and configurable solution to manage
four independent high-brightness LED channels
using the STLUX385A digital controller. The
STLUX385A is a part of the STMicroelectronics^®
STLUX™ product family and embeds advanced
peripherals tailored to generate high resolution
PWM signals (SMED).
May 2014
DocID024374 Rev 2
For further information contact your local STMicroelectronics sales office.
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