Datasheet

DocID023432 Rev 4 21/40
LED2000 Application notes
40
Figure 13. Dimming signal
For example, assuming a 1 kHz dimming frequency the maximum dimming depth is 5% or,
given a 2% dimming depth, it follows a 200 Hz maximum f
DIM
.
The LED2000 dimming performance is strictly dependent on the system small signal
response. As a consequence, an optimized compensation (good phase margin and
bandwidth maximized) and minimized C
OUT
value are crucial for the best performance.
6.7 eDesign studio software
The LED2000 device is supported by the eDesign software which can be viewed online at
www.st.com.
Figure 14. eDesign studio screenshot
The software easily supports the component sizing according to the technical information
given in this datasheet (see Section 6 and Section 7).
The end user is requested to fill in the requested information such as the input voltage
range, the selected LED parameters and the number of LEDs composing the row.
AM12904v1
AM12905v1