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ALED6000 Datenblatt(PDF) 13 Page - STMicroelectronics

Teilenummer ALED6000
Bauteilbeschribung  Automotive 3 A single channel LED driver with integrated DC-DC converter
PDF  45 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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ALED6000 Datenblatt(HTML) 13 Page - STMicroelectronics

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Refer also to Section 6.2 Output capacitor and inductor selection for output capacitor design hints.
The dimming performance depends on the current pulse shape specification of the final application.
Figure 8. Dimming operation
DIM
t
T
LED
rise
t fall
T
DIM
I LED
The ideal current pulse has rectangular shape; however, in any case it degenerates into a trapezoid or, at worst,
into a triangle, depending on the ratio (tRISE + tFALL)/ TLED.
Figure 9. Dimming operation (rising edge) – VIN=44 V, 12 LED
ALED6000
Digital dimming
DS13018 - Rev 4
page 13/45



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