STEVAL-ILL039V2 Datasheet, PDF (1/4 Pages) STMicroelectronics – Dimming mode with external PWM signal

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 I_LED = 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).
STEVAL-ILL039V2
November 2011
Doc ID 018913 Rev 1
For further information contact your local STMicroelectronics sales office.
1/4
www.st.com
4