Data brief

For further information contact your local STMicroelectronics sales office.

October 2011

Doc ID 018912 Rev 1

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STEVAL-ILL039V1

Step-up current controller for 2 LEDs

based on the STLDC08 driver

Features

Description

The purpose of the STEVAL-ILL039V1

demonstration board is to provide an example for

applications of an LED driver using the step-up

controller STLDC08.

The STLDC08 is designed for handheld

equipment supplied by AA or AAA batteries and

provides a precise constant current starting from

a variable input voltage source.

The LED current is set by an external sense

resistor inserted between the feedback pin (FB)

and GND.

A regulation loop holds the voltage drop at the

sense resistor at a constant level (100 mV typ.).

STEVAL-ILL039V1

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