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January 2015 DocID024269 Rev 2 1/4
STEVAL-ILL048V1
Single-channel LED driver for automotive day-time running lights
(DTRL) and front lights based on ALED6001 and STM32F103C6T6
Data brief
Features
• Wide DC input voltage range: from 6 to 24 V
• Integrated boost converter with adaptive output
voltage for minimum power dissipation
• Up to 92% boost converter efficiency
• Single output LED driver with programmable
current capability up to 350 mA
• High-side current sensing feedback
• External dimming MOSFET driver for superior
dimming performance
• PWM and analog LED brightness control
• Up to 60 V output (16 white LEDs)
• On-board STM32 microcontroller for simple
device evaluation
• USB connection for device control through
dedicated PC GUI
• RoHS compliant
Description
The STEVAL-ILL048V1 demonstration board
showcases ST's new LED driver chip, the
ALED6001. The demonstration also includes an
on-board microcontroller that permits full control
of the device through a USB connection and
dedicated PC GUI. The ALED6001 has been
specifically designed to supply a string of
medium/high current (50 -1000 mA) LEDs starting
from a single low-voltage rail or a car battery. It
integrates a boost controller, high-side current
sensing feedback circuitry and an external
dimming MOSFET controller for superior dimming
performance. The boost controller regulates the
output voltage adaptively, based on the
requirements of the LEDs, resulting in improved
overall efficiency. The maximum output voltage of
the boost converter is 60 V, allowing the device to
drive up to 16 white LEDs in series.
The brightness of the LEDs is controlled by using
both PWM modulation and analog current control
(analog dimming).
The device includes dedicated pins to lock
synchronization with other devices for switching
noise reduction in multi-device applications.
The ALED6001 implements basic protection
features (OVP, OCP and thermal shutdown) in
addition to LED array protection (load
disconnection, feedback disconnection, and LED
overcurrent).
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