SC4503EVB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4503EVB' PDF : 22 Pages View PDF
POWER MANAGEMENT
Typical Application Circuits
SC4503
5V
C1
4.7µF
L1
10µH
D1
ZHCS400
R3
54.9k
5
1
IN
SW
SC4503
4 SHDN/SS
FB 3
C3
56nF
GND
2
+
D2
24V
_
MM5Z24VT1
C4
C5
22nF
220pF
R4
301k
R1
63.4
R2
63.4
C2
0.22µF
L1: Murata LQH32C
C1: Murata GRM219R60J475K
Figure 9. Driving Two 6 White LED Strings from 5V. Zener diode D2 protects the converter
from over-voltage damage when both LED strings become open.
2007 Semtech Corp.
15
www.semtech.com
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