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 STEVAL-TLL006V1
High-power LED driver demonstration board for single flash with I2C interface based on the STCF06
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 - 1 A between 2.7 V to 5.5 V Efficiency up to 85% LED current control 1.8 MHz fixed frequency PWM Full I2C control Motherboard based on PSD used as USB bridge RoHS compliant STEVAL-TLL006V1

Description
This demonstration board implements a flash LED driver using the STCF06 device, which is a buck-boost current mode converter with an I2C interface. The flash LED driver STCF06 has a high operating frequency (1.8 MHz) which allows the usage of small external components. The demonstration board is designed for driving a single LED with a forward voltage range from 2.7 to 5 V. For easy connection to a PC, the STEVALTLL006V1 uses a PSD-based motherboard used as a bridge. The STCF06 motherboard uses an 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.
May 2009
Doc ID 15720 Rev 1
1/4
www.st.com 4
For further information contact your local STMicroelectronics sales office.
Circuit schematic
STEVAL-TLL006V1
1
Circuit schematic
Figure 1. Typical application schematic
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Doc ID 15720 Rev 1
STEVAL-TLL006V1
Revision history
2
Revision history
Table 1.
Date 20-May-2009
Document revision history
Revision 1 Initial release. Changes
Doc ID 15720 Rev 1
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STEVAL-TLL006V1
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Doc ID 15720 Rev 1


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