Datasheet

ILD4035
350 mA Step Down LED Driver
Basic Application Information
Data Sheet 27 Revision 2.0, 2011-08-17
R
sense
= 367 mΩ, L= 220 µH
I
LED
versus V
S
and Number of LEDs f
Switch
versus V
S
and Number of LEDs
Efficiency versus
V
S
and Number of LEDs Duty Cycle versus V
S
and Number of LEDs
0.2
0.25
0.3
0.35
0.4
0 5 10 15 20 25 30 35 40 45
I
LED
[A]
V
S
[V]
1 LED
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
7 LEDs
8 LEDs
9 LEDs
10 LEDs
0
100
200
300
400
500
0 5 10 15 20 25 30 35 40 45
f
Switch
[kHz]
V
S
[V]
1 LED
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
7 LEDs
8 LEDs
9 LEDs
10 LEDs
60
65
70
75
80
85
90
95
100
0 5 10 15 20 25 30 35 40 45
Efficiency [%]
V
S
[V]
1 LED
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
7 LEDs
8 LEDs
9 LEDs
10 LEDs
0
20
40
60
80
100
0 5 10 15 20 25 30 35 40 45
Duty Cycle [%]
V
S
[V]
1 LED
2 LEDs
3 LEDs
4 LEDs
5 LEDs
6 LEDs
7 LEDs
8 LEDs
9 LEDs
10 LEDs