X R P 7 6 1 8
8 - C h a n n e l C o n s t a n t C u r r e n t L i n e a r L E D D r i v e r W i t h
S m a r t T a l k T M
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at V CC = 5V, R ISET = 8k?, T A = 25°C, unless otherwise specified - Schematic and BOM from Application
Information section of this datasheet.
20
18
16
14
12
10
8
6
4
2
0
1kHz
100Hz
25kHz
0
20
40
60
80
100
Duty cycle (%)
Fig. 4: Current per Channel vs Temperature
59
58
57
56
Fig. 5: PWM Dimming: Current per Channel vs Duty Cycle
59
58
57
56
4
4.2
4.4
4.6
4.8
5
5.2
5.4
5.6
0.5
1.0
1.5
2.0
2.5
3.0
Input Voltage (V)
Fig. 6: Current per Channel vs Input Voltage
Voltage per channel (V)
Fig. 7: Current per Channel vs Voltage per Channel
100
90
80
70
60
50
40
30
20
10
0
10
20
30
40
Rset (k ? )
Fig. 8: Maximum Output Current vs Voltage per Channel
Fig. 9: Current per Channel vs RSET resistor
? 2013 Exar Corporation
5/10
Rev. 1.2.0
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