ISL97635AIRZ-TK Intersil, ISL97635AIRZ-TK Datasheet - Page 8

• Manufacturer Part Number: ISL97635AIRZ-TK
• Description: IC LED DRVR WHT/RGB BCKLGT 24QFN
• Manufacturer: Intersil
• Type: Backlight, White LED, RGBr

Specifications of ISL97635AIRZ-TK

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Automotive, Backlight
• Type - Secondary: RGB, White LED
• Frequency: 600kHz, 1.2MHz
• Voltage - Supply: 6 V ~ 24 V
• Voltage - Output: 34.5V
• Mounting Type: Surface Mount
• Package / Case: 24-VQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 35mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL97635AIRZ-TK

Typical Performance Curves
FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING
-0.005
-0.010
-0.015
-0.020
0.020
0.015
0.010
0.005
180
160
140
120
100
80
60
40
20
0
0
0
6 CHANNELS
9 LEDs PER CHANNEL
6P9S = 54 LEDs
10
Ch 0
FIGURE 8. PWM DIMMING LINEARITY
FIGURE 10. IL AT 50% PWM DIMMING
20
6V/1mA
Ch 1
30
PWM DUTY CYCLE (%)
V
IN
40
Ch 2
6V/20mA
CHANNELS
= 18V
8
50
V
IN
12V/1mA
= 12V
Ch 3
60
12V/20mA
70
(Continued)
Ch 4
80
V
IN
90
Ch 5
= 6V
100
ISL97635A
FIGURE 7. CURRENT MATCHING vs DUTY CYCLE vs
1.0
0.9
0.8
0.7
0.6
0.5
FIGURE 11. I
0
200Hz
0.1
DIMMING FREQUENCY
FIGURE 9. LX, IIN, IL AND LO
0.2
L
ZOOM IN AT PWM DIMMING ZOOM IN
10kHz
0.3
PWM DUTY CYCLE
0.4
1kHz
0.5
0.6
0.7
December 22, 2008
100Hz
20kHz
0.8
V
IN
= 12V
0.9
FN6564.2
1.0