SC4541
Schematic (Buck)
ApplicationsInformation(continued)
Efficiency
12Vin, 2LED, Buck topology
VIN
12V
R5
10K
85
C3
1
IN
U1
EN
6
80
L1
10uH
OPT
2
3
GND
SW
SC4541
OUT
FB
4
5
R1
1 ?
C2
1uF
V IN2
12V
75
70
C5
1uF * 3pcs
65
LED10
LED9
60
0
20
40
60
80
100
120
140
160
180
200
LED17
LED16
Output Current(mA)
(1) L1: Murata LQH3NPN100MM0L
(2) C2,C5: Murata GRM188R7YA105K
Schematic (Buck, High Efficiency Option)
Efficiency (Buck, High
Figure 2 — Typical Application Schematic, Buck Topology
< High Efficiency Option >
< High Efficiency Option >
12Vin, 2LED, Buck topology
VIN
3.3V
C3
IN
R5
10K
U1
EN
90
85
L1
10uH
1uF
GND
SW
SC4541
OUT
FB
R1
1 ?
C2
1uF
VIN 2
12V
80
75
70
C5
1uF * 3pcs
65
LED10
LED9
60
0
20
40
60
80
100
120
140
160
180
200
LED17
LED16
Output Current(mA)
(1) L1: Murata LQH3NPN100MM0L
(2) C2, C3,C5: Murata GRM188R7YA105K
Figure 3 — Typical Application Schematic, High Efficiency of Buck Topology
13
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