ISL97671
Typical Performance Curves
100
90
80
100
90
80
6P10S_30mA/CHANNEL
70
60
12V IN
24V IN
5V IN
70
60
12V IN
24V IN
5V IN
50
40
30
20
10
50
40
30
20
10
0
0
5
10
15
20
25
0
0
5
10
15
20
25
30
35
I LED(mA)
FIGURE 4. EFFICIENCY vs UP TO 20mA LED CURRENT (100% LED
DUTY CYCLE) vs V IN
100
90
80
I LED(mA)
FIGURE 5. EFFICIENCY vs UP TO 30mA LED CURRENT (100% LED
DUTY CYCLE) vs V IN
100
80
70
60
580k
1.2MHz
60
580k
1.2MHz
50
40
30
20
10
40
20
0
0
5
10
15
20
25
30
0
0
5
10
15
20
25
30
V IN
FIGURE 6. EFFICIENCY vs V IN vs SWITCHING FREQUENCY AT
20mA (100% LED DUTY CYCLE)
100
90
80
V IN
FIGURE 7. EFFICIENCY vs V IN vs SWITCHING FREQUENCY AT
30mA (100% LED DUTY CYCLE)
0.40
0.30
70 +25°C
-40°C
0.20
60
+85°C
0°C
0.10
50
40
30
20
10
0.00
-0.10
-0.20
-0.30
4.5 V IN
21 V IN
12 V IN
0
0
5
10
15
20
25
30
-0.40
0
1
2
3
4
5
6
7
V IN
FIGURE 8. EFFICIENCY vs V IN vs TEMPERATURE AT 20mA (100%
LED DUTY CYCLE)
8
CHANNEL
FIGURE 9. CHANNEL-TO-CHANNEL CURRENT MATCHING
FN7631.3
August 14, 2012
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