ELM916DA
450V LED controller
■Buck topology sample application characteristics
VIN
C1
10μF
R1
1kΩ
LED1
SBD
LED2
3.5V, 350mAx3
R2
390kΩ
LED3
8
7
6
1
2
3
4
RT
LD
ELM916DA
VIN
CS
R4 470Ω
C3
1nF
L
2mH
VDD
GND
C2
2.2μF
5
PWMD GATE
R3
0.6Ω
Vin-Average Iin
70
400
390
60
50
Vin-Average Iled
Average Iled (mA)
380
370
360
350
340
330
320
310
300
Iin (mA)
40
30
20
10
0
70
80
90 100 110 120 130 140 150
70
80
90 100 110 120 130 140 150
Vin (V)
Vin-Fsw
60.00
58.00
56.00
54.00
52.00
50.00
48.00
46.00
44.00
42.00
40.00
70
80
90 100 110 120 130 140 150
Vin (V)
Fsw (kHz)
Vin (V)
6- 6
Rev.1.3