ISL78100 Intersil Corporation, ISL78100 Datasheet - Page 6

• Manufacturer Part Number: ISL78100
• Manufacturer: Intersil Corporation

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
0
8 LEDs
I
FIGURE 15. LED CURRENT vs V
LED
0
6
DUTY CYCLE = 100%
RSET = 0.5Ω
I
DUTY CYCLE = 10%
5 LEDs
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
1.0
18
VIN
LX
IL
FB
ISL78100
FIGURE 14. 3 LEDs LINE REGULATION OF PWM DUTY
FIGURE 16. QUIESCENT CURRENT (NON-SWITCHING)
0.1000
0.0100
0.0010
0.0001
FIGURE 18. START-UP WAVEFORMS ZOOM-IN
42
41
40
39
38
37
36
35
34
33
32
8 LEDs
I
LED
4
6
3 LEDs
I
DUTY CYCLE = 10%
LEDpeak
EN/PWM = 0
V
T
= 350mA
A
CYCLE OF 10%
LEVEL
= +25°C
5
8
= 380mA
= 1V
6
10
V
IN
V
PWM @ 10kHz
7
PWM @ 100Hz
IN
12
(V)
(V)
8
14
December 17, 2007
9
16
FN6626.0
10
VIN
LX
IL
FB
18