ST TLL007V1 User Manual
High-power LED driver demonstration board for dual flash
with I
Features
■ Boost DC-DC converter with synchronous
rectification
■ Drives two power white LEDs in series with a
current up to 400 mA
■ Efficiency up to 85%
■ 3 passive components only
■ 24 mm
■ 1.8 MHz fixed frequency PWM
■ Full I
■ Motherboard based on µPSD used like USB
bridge
■ RoHS compliant
2
PCB area only
2
C control
STEVAL-TLL007V1
2
C interface based on the STCF05
Data brief
STEVAL-TLL007V1
Description
This demonstration board is dedicated to the
STCF05 flash LED driver IC, which is a boost
current mode converter with an I
internal current source. The STCF05 is designed
to drive two LEDs in series with a total forward
voltage from 5.3 V to 10.2 V.
For easy connection to a PC, the STEVALTLL007V1 uses a µPSD-based motherboard
used as a bridge.
The STCF05 motherboard uses a USB human
interface device to communicate with the PC. It is
not necessary to install a driver, if the operating
system in use is capable of enumerating USB
human interface devices.
2
C interface and
January 2010 Doc ID 15721 Rev 2 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-TLL007V1
1 Circuit schematic
Figure 1. Typical application schematic
2/4 Doc ID 15721 Rev 2
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