ISL97682 データシートの表示（PDF） - Intersil
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ISL97682 Datasheet PDF : 17 Pages
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ISL97682, ISL97683, ISL97684
Typical Performance Curves (Continued)
4.5
4.0
3.5
3.0
2.5
2.0
1.5
CALCULATED
1.0
MEASURED
0.5
0
0
0.8
1.6
2.4
3.2
4.0 4.8
DC (%)
FIGURE 9. CURRENT LINEARITY vs LOW LEVEL PWM DIMMING
DUTY CYCLE AT 12VIN FOR 4P10S AT 20mA/CH
32
30
28
CH3
26
24
22
20
18
16
14
CH2
12
CH4
10
8
CH1
6
4
2
0
0
20
40
60
80
100
DIMMING DUTY CYCLE (%)
FIGURE 10. CURRENT LINEARITY vs PWM DIMMING DUTY CYCLE
AT 12VIN FOR 4P10S AT 20mA/CH
5
4
3
2
1
0
0
5
10
15
20
25
30
VIN (V)
FIGURE 11. QUIESCENT CURRENT vs VIN WITH EN = HIGH, NO
LEDS CONNECTED
1.0
0.8
0.6
0.4
CH4 CH2 CH1 CH3
0.2
0
0
10
20
30
VIN (V)
FIGURE 12. CHANNEL VOLTAGE vs VIN FOR VIN = 12V AT 4P10S AT
20mA/CH
IIN (0.5A/DIV)
VIN (5V/DIV)
ILED (20mA/DIV)
VIN (5V/DIV)
IIN (0.5A/DIV)
ILED (20mA/DIV)
FIGURE 13. LINE REGULATION WITH VIN CHANGE FROM 6V TO 26V
FOR 4P10S AT 20mA/C
FIGURE 14. LINE REGULATION WITH VIN CHANGE FROM 26V TO 6V
FOR 4P10S AT 20mA/CH
8
FN7689.0
March 11, 2011
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