STEVAL-TLL006V2 Datasheet, PDF (1/4 Pages) STMicroelectronics – LED current control

STEVAL-TLL006V2
New high-power LED driver demo board for single flash with I²C
interface based on STCF06 (with motherboard based on µPSD)
Data brief
Features
■ Buck-boost DC-DC converter
■ Drives one power LED up to:
– 1.5 A between 3.5 V to 5.5 V
) _{– 1.3 A between 3.0 V to 5.5 V}
t(s – 1 A between 2.7 V to 5.5 V
uc ^{■ Efficiency up to 85%}
d _{■ LED current control}
ro _{■ 1.8 MHz fixed frequency PWM}
P _{■ Full I2C control}
te _{■ Motherboard based on µPSD used as USB}
le _bridge
so _{■ RoHS compliant}
- ^{Ob Description}
t(s) ^{The STEVAL-TLL006V2 demonstration board}
implements a flash LED driver using the STCF06
c _{device, which is a buck-boost current mode}
u _{converter with an I2C interface.}
rod As technology for external components has
P greatly improved, in this new version “V2” it was
te ^{possible to shrink the original application and}
maintain the same level of performance or similar.
ole The flash LED driver STCF06 has a high
s _{operational frequency (1.8 MHz) which allows the}
Ob^{use of small external components.}
Connect the motherboard to the PC through the
USB cable (AB type). Wait until the computer
enumerates the control board and displays the
message that new hardware has been found and
is ready to use. It is then possible to run the data
packet creator application by pressing the
“Connect board” button.
The STEVAL-TLL006V2 is designed for driving a
single LED with a forward voltage range from 2.7
to 5 V.
For easy connection to the PC, a motherboard is
supplied based on µPSD which is used as a
bridge.
The STCF06 motherboard uses a USB human
interface device class to communicate with the
PC. It is not necessary to install any driver, if the
operating system is able to enumerate USB
human interface devices.
March 2012
Doc ID 022711 Rev 1
For further information contact your local STMicroelectronics sales office.
1/4
www.st.com
4