ISL97673 Просмотр технического описания (PDF) - Renesas Electronics
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ISL97673 Datasheet PDF : 28 Pages
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ISL97673
Typical Performance Curves (Continued)
100
90
80
70 +25°C
60
+85°C
0°C
-40°C
50
40
30
20
10
0
0
5
10
15
20
25
30
VIN
FIGURE 7. EFFICIENCY vs VIN vs TEMPERATURE AT
20mA (100% LED DUTY CYCLE)
0.40
0.30
0.20
0.10
0.00
-0.10
4.5 VIN
12 VIN
-0.20
-0.30
21 VIN
-0.40
0
1
2
3
4
5
6
7
CHANNEL
FIGURE 8. CHANNEL-TO-CHANNEL CURRENT
MATCHING
1.2
1.0
0.8
4.5 VIN
0.6
12 VIN
0.4
0.2
0
0
1
2
3
4
5
6
DC
FIGURE 9. CURRENT LINEARITY vs LOW LEVEL PWM
DIMMING DUTY CYCLE vs VIN
0.60
0.55
+25°C
-40°C
0.50
0.45
0°C
0.400
5
10
15
20
25
30
VIN (V)
FIGURE 10. VHEADROOM vs VIN AT 20mA
FIGURE 11. VOUT RIPPLE VOLTAGE, VIN = 12V, 6P12S
AT 20mA/CHANNEL
FIGURE 12. IN-RUSH and LED CURRENT AT VIN = 6V
FOR 6P12S AT 20mA/CHANNEL
FN7633 Rev.3.00
Sep 19, 2017
Page 9 of 28
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