fish001

4 LED boost current controller based on STLDC08 driver

STEVAL-ILL039V2

Overview

The purpose of the STEVAL-ILL039V2 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 (typ. 100 mV).

Main features

Input voltage: 0.8 V to 3.6 V
Output: 4 LEDs at I_LED= 300 mA
Dimming mode with external PWM signal
RoHS compliant

Design Files

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Update:2025-08-04 03:38:29

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