STEVAL-ILL088V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Digital dimming

STEVAL-ILL088V1
0.55 A, positive buck-boost LED driver board based on LED6000
Data brief
Features
 24 to 60 V input voltage
 Step-up and step-down conversion (up to 14
LEDs)
 0.55 A programmed LED current
 500 kHz switching frequency
 Digital dimming
 Compatible with ceramic output capacitors
 180° out-of-phase synchronization
 Auto-recovery overcurrent and thermal
protection
 RoHS compliant
Description
The STEVAL-ILL088V1 evaluation board is
based on a monolithic current source for high
power LED driving, the LED6000, a 61 V
asynchronous switching regulator. With
embedded power MOSFET, it is designed to
source up to 3 A DC current depending on the
application conditions.
The 250 mV typical RSENSE voltage drop, the
VBIAS pin embedded switch-over feature and the
light load management (pulse skipping) maximize
power conversion efficiency across the entire
load range.
Digital dimming is implemented by driving the
dedicated DIM pin.
The current limit threshold and the switching
frequency are adjustable for application
optimization.
The device also includes a 250 kHz oscillator that
can be externally adjusted up to 1.5 MHz.
The size of the overall application is minimized
thanks to the high switching frequency and its
compatibility with ceramic output capacitors.
Two LED6000 regulators can be synchronized in
a 180° out-of-phase configuration to reduce the
total input RMS current.
February 2017
DocID030327 Rev 1
For further information contact your local STMicroelectronics sales
office
1/4
www.st.com