ST STEVAL-ILL039V2 Current Controller for 4 LEDs Based on STLDC08 Driver Manual
Summary
Optimize your portable lighting designs with this demonstration board, featuring the STLDC08 step-up current controller. This module is designed for developers building specialized handheld equipment powered by AA or AAA batteries. It provides reliable constant current output for four LEDs (300 mA) and supports external PWM dimming capabilities. The accompanying manual offers a detailed schematic and technical guidance necessary to implement precise, variable-input LED driving solutions into your next product.
Page 1 Text Content
STEVAL-ILL039V2
Step-up current controller for 4 LEDs based on the STLDC08 driver
Data brief
Features Input voltage: 0.8 V to 3.6 V Output: 4 LEDs at ILED = 300 m A Dimming mode with external PWM signal Ro HS compliant
Description 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.
STEVAL-ILL039V2
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 m V).
November 2011 Doc ID 018913 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com
Page Summary Contents For ST STEVAL-ILL039V2 Current Controller for 4 LEDs Based on STLDC08 Driver Manual
Manual Details
| Brand | Current |
|---|---|
| Pages | 4 |
| File Size | 190.89 KB |
| Published | June 03, 2026 |
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Frequently Asked Questions
How can I adjust the precise LED current?
The LED current is set by inserting an external sense resistor between the feedback pin (FB) and GND.
What types of input power sources are compatible with this board?
It is designed for handheld equipment powered by AA or AAA batteries, handling inputs from 0.8 V to 3.6 V.
Does the device support variable brightness control?
Yes, it supports a dimming mode using an external PWM signal.
Can I use this product in critical life-saving applications?
ST products are generally not recommended for life saving or military applications unless specifically designated as 'AUTOMOTIVE GRADE.'