sc4541 Semtech Corporation, sc4541 Datasheet - Page 13

• Manufacturer Part Number: sc4541
• Description: High Frequency Led Driver With Integrated Schottky And Simple Interconnect
• Manufacturer: Semtech Corporation

Applications Information ( continued)
VIN
12V
VIN
3.3V
(1) L1: Murata LQH3NPN100MM0L
(2) C2, C3,C5: Murata GRM188R7YA105K
(1) L1: Murata LQH3NPN100MM0L
(2) C2,C5: Murata GRM188R7YA105K
10uH
L1
10uH
L1
C3
OPT
1uF
C3
< High Efficiency Option >
Figure 3 — Typical Application Schematic, High Efficiency of Buck Topology
1
2
3
LED10
LED17
LED10
LED17
IN
GND
SW
IN
GND
SW
1uF * 3pcs
1uF * 3pcs
SC4541
SC4541
C5
C5
LED9
LED16
LED9
LED16
R5
10K
R5
10K
Figure 2 — Typical Application Schematic, Buck Topology
U1
U1
OUT
OUT
EN
EN
FB
FB
Schematic (Buck, High Efficiency Option)
6
4
5
R1
1
R1
1
Schematic (Buck)
C2
1uF
C2
1uF
VIN2
VIN2
12V
12V
85
80
75
70
65
60
90
85
80
75
70
65
60
0
0
20
20
40
40
< High Efficiency Option >
60
60
12Vin, 2LED, Buck topology
12Vin, 2LED, Buck topology
Output Current(mA)
Output Current(mA)
80
80
100
100
120
120
Efficiency (Buck, High
140
140
SC4541
160
160
180
180
Efficiency
200
200
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