參數(shù)資料
型號: ISL97801
廠商: Intersil Corporation
英文描述: High Power LED Driver
中文描述: 高功率LED驅(qū)動(dòng)器
文件頁數(shù): 4/19頁
文件大?。?/td> 707K
代理商: ISL97801
4
FN6428.1
April 2, 2007
Typical Performance Curves
FIGURE 1. 8 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
FIGURE 2. 5 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
FIGURE 3. 3 LEDs EFFICIENCY vs INPUT VOLTAGE vs
DIMMING FREQUENCY AND DUTY CYCLE
FIGURE 4. 8 AND 5 LEDs EFFICIENCY vs PWM DUTY CYCLE
FIGURE 5. LEDs PWM DIMMING LINEARITY
FIGURE 6. 8 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
60
65
70
75
80
85
90
95
100
6
8
10
12
14
16
18
V
IN
(V)
E
8 LEDs
I
LEDpeak
= 380mA
10%@100Hz
10%@10kHz
99%@100Hz
99%@10kHz
50%@1kHz
50%@10kHz
50%@100Hz
10%@1kHz
99%@1kHz
60
65
70
75
80
85
90
95
100
4
6
8
10
12
14
16
V
IN
(V)
E
5 LEDs
I
LEDpeak
= 380mA
99% @ 10kHz
99% @ 100Hz
10% @ 10kHz
10% @ 100Hz
60
65
70
75
80
85
90
95
100
4
8
10
V
IN
(V)
E
3 LEDs
I
LEDpeak
= 380mA
6
99%@100Hz
99%@10kHz
10%@10kHz
10%@100Hz
60
65
70
75
80
85
90
95
100
0
20
PWM DIMMING DUTY CYCLE (%)
40
60
80
100
E
8 LEDs
5 LEDs
I
LEDpeak
= 380mA
PWM = 10kHz
8 LEDs, V
IN
= 12V
5 LEDs, V
IN
= 9V
0
50
100
150
200
250
300
350
400
0
20
PWM DIMMING DUTY CYCLE (%)
40
60
80
100
I
L
8 LEDs, V
IN
= 12V
5 LEDs, V
IN
= 9V
3 LEDs, V
IN
= 5V
I
LEDpeak
= 380mA
5 LEDs @ 100Hz
3 LEDs @ 100Hz
8 LEDs @ 1kHz
5 LEDs @ 10kHz
8 LEDs @ 10kHz
-6
-5
-4
-3
-2
-1
0
1
2
3
4
6
8
10
12
14
16
18
V
IN
(V)
Δ
I
L
(
8 LEDs
I
LEDpeak
= 380mA
10% @ 100Hz
99% @ 100Hz
99% @ 10kHz
10% @ 10kHz
ISL97801
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