LM3697_15 Datasheet, PDF (21/43 Pages) Texas Instruments – High-Efficiency Three-String White LED Driver

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8 Application and Implementation
LM3697
SNOSCS2C – NOVEMBER 2013 – REVISED OCTOBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LM3697 provides a complete high-performance LED lighting solution for mobile handsets. The LM3697 is
highly configurable and can support the LED configurations summarized in Table 23. The LM3697 provides
internal ramp time generators to provide smooth LED dimming with 11-bit control while requiring only 8-bit control
from the host controller. The LM3697EVM is available with GUI software to aid understanding of the LM3697
operation.
NUMBER OF LED STRINGS
3
2
1
Table 23. Supported LED Configurations
MAXIMUM NUMBER OF SERIES LEDS
7
10
10
8.2 Typical Applications
Figure 13. LM3697 Schematic
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