ST ILL039V2 User Manual
STEVAL-ILL039V2
Step-up current controller for 4 LEDs based on the STLDC08 driver
Features
■Input voltage: 0.8 V to 3.6 V
■Output: 4 LEDs at ILED = 300 mA
■Dimming mode with external PWM signal
■RoHS 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.
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).
Data brief
STEVAL-ILL039V2
November 2011 |
Doc ID 018913 Rev 1 |
1/4 |
For further information contact your local STMicroelectronics sales office. |
www.st.com |
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Schematic |
STEVAL-ILL039V2 |
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1 Schematic
Figure 1. Schematic
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2/4 |
Doc ID 018913 Rev 1 |
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