ISL97801BOOSTEVALZ Intersil, ISL97801BOOSTEVALZ Datasheet - Page 6

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

Typical Performance Curves
FIGURE 13. 5 LEDs LINE REGULATION OF PWM DUTY
400
350
300
250
200
150
100
50
41
40
39
38
37
36
35
34
8 LEDs
I
0
FIGURE 15. LED CURRENT vs V
LED
0
6
RSET = 0.5Ω
DUTY CYCLE = 100%
5 LEDs
I
DUTY CYCLE = 10%
LEDpeak
FIGURE 17. START-UP WAVEFORMS
= 350mA
CYCLE OF 10%
10% @ 100Hz
8
0.2
= 380mA
3 LED
10
5 LED
0.4
V
LEVEL
6
V
10% @ 10kHz
IN
12
(V)
(V)
0.6
14
LEVEL
(Continued)
0.8
8 LED
BIAS
16
18
1.0
ISL97801
FIGURE 14. 3 LEDs LINE REGULATION OF PWM DUTY
FIGURE 16. QUIESCENT CURRENT (NON-SWITCHING)
0.0001
0.001
0.01
FIGURE 18. START-UP WAVEFORMS ZOOM-IN
42
41
40
39
38
37
36
35
34
33
32
0.1
8 LEDs
I
LED
4
6
3 LEDs
I
DUTY CYCLE = 10%
LEDpeak
EN/PWM = 0
V
T
= 350mA
CYCLE OF 10%
LEVEL
A
= +25°C
5
8
= 1V
= 380mA
6
10
V
IN
V
PWM @ 10kHz
7
PWM @ 100Hz
IN
12
(V)
(V)
8
14
9
16
April 2, 2007
FN6428.1
10
18