SC4541EVB-2 View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4541EVB-2

High Frequency LED Driver with Integrated Schottky and Simple Interconnect

Semtech Corporation 

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Applications Information ( continuedS)chematic (Buck)

SC4541

Efficiency

VIN

12V

L1

10uH

R5

10K

U1

1 IN

C3

EN 6

OPT

2 GND SC4541

OUT 4

3 SW

FB 5

C5

1uF * 3pcs

LED10

LED9

LED17

LED16

VIN2

R1

C2

12V

1

1uF

12Vin, 2LED, Buck topology

85

80

75

70

65

60

0

20 40 60 80 100 120 140 160 180 200

Output Current(mA)

(1) L1: Murata LQH3NPN100MM0L

(2) C2,C5: Murata GRM188R7YA105K

Efficiency (Buck, High

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< High Efficiency Option >

< High Efficiency Option >

VIN

R5

3.3V

10K

12Vin, 2LED, Buck topology

90

L1

10uH

U1

IN

EN

C3

1uF

GND SC4541 OUT

SW

FB

C5

1uF * 3pcs

LED10

LED9

LED17

LED16

VIN2

R1

C2

12V

1

1uF

85

80

75

70

65

60

0

20 40 60 80 100 120 140 160 180 200

Output Current(mA)

(1) L1: Murata LQH3NPN100MM0L

(2) C2, C3,C5: Murata GRM188R7YA105K

Figure 3 — Typical Application Schematic, High Efficiency of Buck Topology

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