ISL97636AIRZ-TK Просмотр технического описания (PDF) - Renesas Electronics
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ISL97636AIRZ-TK Datasheet PDF : 18 Pages
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ISL97636A
Typical Performance Curves
92
90
88
86
84
82
7S6P - 12V
7S6P - 18V
80
9S6P - 12V
9S6P - 18V
78
76
7S6P - 6V
74
72 9S6P - 6V
L = 8.2µH
70
IHLP-2525BD-01
68
DCR = 106m
ISAT = 3A
66
0
20
40
60
80
100 120 140
IO (mA)
FIGURE 2. EFFICIENCY, L = 8.2µH WITH DCR = 106m,
CO = 4x4.7µF/50V
92
90
L = 10µH
DCR ~ 500m
88 <1mm HEIGHT
86
9S6P - 18V
84
9S6P - 12V
82
7S6P - 12V
80
78 7S6P - 18V
76
74
9S6P - 6V
72
7S6P - 6V
70
68
66
0
20
40
60
80
100 120 140
IO (mA)
FIGURE 4. 3 EFFICIENCY, L = 10µH WITH DCR = 500m,
1mm, CO = 4x4.7µF/50V
0.020
0.015
6P9S = 54 LEDs
0.010
0.005
12V/1mA
12V/20mA
0
-0.005
-0.010
-0.015
6V/20mA
6V/1mA
-0.020
Ch 0
Ch 1
Ch 2 Ch 3
CHANNELS
Ch 4
Ch 5
FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING
FN6566 Rev 0.00
May 9, 2008
92
90
88 7S6P - 12V
86
84
82
9S6P - 18V 9S6P - 6V
80
78
7S6P - 18V 9S6P - 12V
76
74
7S6P - 6V
72 L = 10µH
70 IHLP-2525BD-01
68
66
DCR = 129m
ISAT = 2.5A
0
20
40
60
80
IO (mA)
100 120 140
FIGURE 3. EFFICIENCY, L = 10µH WITH DCR = 129m,
CO = 4x4.7µF/50V
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
4
20mA
6 8 10 12 14 16 18 20 22 24 26
VIN (V)
FIGURE 5. CURRENT REGULATION
1.0
VIN = 12V
0.9
20kHz
0.8
0.7
200Hz
0.6
10kHz
1kHz
100Hz
0.5
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
PWM DUTY CYCLE
FIGURE 7. CURRENT MATCHING vs DUTY CYCLE vs
DIMMING FREQUENCY
Page 6 of 18
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