ISL97675 Просмотр технического описания (PDF) - Intersil
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ISL97675 Datasheet PDF : 20 Pages
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ISL97675
Typical Performance Curves
100
80
5VIN
12VIN
24VIN
60
40
20
0
0
5
10
15
20
25
ILED (mA)
FIGURE 1. EFFICIENCY vs 20mA LED CURRENT
(100% LED DUTY CYCLE) for 4P12S vs VIN
100
80
5VIN
12VIN 24VIN
60
40
20
00
10
20
30
40
ILED (mA)
FIGURE 2. EFFICIENCY vs 30mA LED CURRENT
(100% LED DUTY CYCLE) for 4P10S vs VIN
100
80
20mA/582kHz
20mA/1.2MHz
60
40
20
0
0
10
20
30
VIN (V)
FIGURE 3. EFFICIENCY vs VIN vs SWITCHING
FREQUENCY AT 20mA for 4P12S (100%
LED DUTY CYCLE)
100
80
30mA/1.2MHz
30mA/582kHz
60
40
20
0
0
10
20
30
VIN (V)
FIGURE 4. EFFICIENCY vs VIN vs SWITCHING
FREQUENCY AT 30mA for 4P10S(100% LED
DUTY CYCLE)
100
90
+25°C
-40°C
80
70
+85°C
0°C
60 0
5
10
15
20
25
30
VIN (V)
FIGURE 5. EFFICIENCY vs VIN vs TEMPERATURE AT
20mA
0.25
0.20
0.15
0.10
0.05
4.5VIN
0.00
-0.05
-0.10
-0.15
-0.20
-0.25
0
12VIN
1
21VIN
2
3
4
CHANNEL
FIGURE 6. CHANNEL-TO-CHANNEL CURRENT
MATCHING
9
FN7630.0
May 19, 2010
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