isl97635 Intersil Corporation, isl97635 Datasheet - Page 8

• Manufacturer Part Number: isl97635
• Description: Smbus 8-channel Led Driver
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING
180
160
140
120
100
-0.5
-1.0
-1.5
-2.0
80
60
40
20
2.0
1.5
1.0
0.5
0.0
0
0
8 CHANNELS
9 LEDS PER CHANNEL
FIGURE 8. PWM DIMMING LINEARITY
FIGURE 10. I
CH 0 CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7
10
20
6V/1mA
30
PWM DUTY CYCLE (%)
L
V
IN
AT 50% PWM DIMMING
6V/20mA
40
12V/1mA
= 18V
CHANNELS
8
V
50
IN
12V/20mA
= 12V
60
V
(Continued)
IN
70
= 6V
80
90
100
ISL97635
FIGURE 7. CURRENT MATCHING vs DUTY CYCLE vs
1.0
0.9
0.8
0.7
0.6
0.5
FIGURE 11. I
FIGURE 9. LX, VIIN, IL AND I
0
10
200kHz
DIMMING FREQUENCY
20
1kHz
L
ZOOM IN AT PWM DIMMING ZOOM IN
30
PWM DUTY CYCLE (%)
10kHz
100kHz
40
20kHz
50
60
O
AT PWM DIMMING
70
80
V
IN
December 22, 2008
= 12V
90
100
FN6434.2