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STLDC08 Scheda tecnica(PDF) 20 Page - STMicroelectronics

Il numero della parte STLDC08
Spiegazioni elettronici  Step-up controller for LED supply
PDF  29 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STLDC08 Scheda tecnica(HTML) 20 Page - STMicroelectronics

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Application information
STLDC08
20/29
Doc ID 18476 Rev 1
Another important parameter is the drain source breakdown voltage. During the ON state,
the potential of the LX point is 0 V, while during the OFF state the potential of this point rises
to the output voltage plus the forward voltage of the D1. Therefore, the absolute VDS rating
of the main switch must be greater than this voltage to prevent main switch damage.
Figure 19.
Current diagram ON state
C
IN
C
OUT
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
ON state
AM07849v1
C
IN
C
OUT
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
ON state
AM07849v1
Figure 20.
Current diagram OFF state
C
IN
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
OFF state
C
OUT
AM07850v1
C
IN
L1
D1
Rsense
VBAT
DVR
STLDC08
SENSE
VOUT
LX
LED
R
FB
FB
OFF state
C
OUT
AM07850v1



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