ISL97801BOOSTEVALZ Intersil, ISL97801BOOSTEVALZ Datasheet - Page 5

• Manufacturer Part Number: ISL97801BOOSTEVALZ
• Description: ISL97801 BOOST EVAL Board - RoHS COMPLIANT - 20LD QFN
• Manufacturer: Intersil

Typical Performance Curves
FIGURE 7. 5 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
FIGURE 11. 3 LEDs LINE REGULATION OF PWM DUTY
FIGURE 9. 8 LEDs LINE REGULATION OF PWM DUTY
-10
410
405
400
395
390
385
380
375
370
365
360
400
395
390
385
380
375
370
365
360
355
350
10
-2
-4
-6
-8
8
6
4
2
0
4
4
6
PWM @ 100Hz
5 LEDs
I
I
DUTY CYCLE = 99%
I
DUTY CYCLE = 99%
3 LEDs
8 LEDs
LEDpeak
LEDpeak
LEDpeak
PWM @ 1kHz
CYCLE OF 99%
CYCLE OF 99%
6
5
10% @ 100Hz
99% @ 100Hz
8
= 380mA
= 380mA
= 380mA
PWM @ 10kHz
99% @ 10kHz
PWM @ 100Hz
8
6
10
PWM @ 10kHz
10% @ 10kHz
V
V
5
V
IN
IN
IN
10
7
12
(V)
(V)
(V)
12
14
8
(Continued)
14
16
9
16
18
10
ISL97801
FIGURE 8. 3 LEDs CURRENT ACCURACY vs INPUT VOLTAGE
FIGURE 10. 5 LEDs LINE REGULATION OF PWM DUTY
FIGURE 12. 8 LEDs LINE REGULATION OF PWM DUTY
420
415
410
405
400
395
390
385
380
375
370
365
360
355
350
16
14
12
10
-2
-4
8
6
4
2
0
40
39
38
37
36
35
34
33
32
31
30
4
6
4
3 LEDs
I
LEDpeak
I
DUTY CYCLE = 99%
5 LEDs
I
DUTY CYCLE = 10%
8 LEDs
LEDpeak
LEDpeak
99% @ 10kHz
CYCLE OF 99%
CYCLE OF 10%
PWM @ 1kHz
5
6
8
= 380mA
= 380mA
= 380mA
99% @ 100Hz
6
10
8
V
99% @ 100Hz
V
V
IN
IN
IN
7
12
10
PWM @ 100Hz
(V)
(V)
(V)
PWM @ 10kHz
14
8
12
99% @ 10kHz
16
9
14
April 2, 2007
FN6428.1
10
18
16