Datasheet

NCL30160
http://onsemi.com
9
Figure 9. Efficiency, 350 mA, V
f_LED
= 3.5 V Figure 10. Efficiency, 700 mA, V
f_LED
= 3.5 V
Figure 11. Efficiency, 1 A, V
f_LED
= 3.5 V Figure 12. IQIN vs. VIN
Figure 13. LED Current vs. Dimming Duty
Ratio
100
95
90
85
80
75
70
65
60
0 5 10 15 20 25 30 35 40
VIN (V)
EFFICIENCY (%)
100
95
90
85
80
75
70
65
60
0 5 10 15 20 25 30 35 40
VIN (V)
EFFICIENCY (%)
100
95
90
85
80
75
70
65
60
0 5 10 15 20 25 30 35 40
VIN (V)
EFFICIENCY (%)
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
5 10 15202530 3540
VIN (V)
IQIN (mA)
DIMMING DUTY RATIO (%)
LED CURRENT (mA)
020406080100
700
600
500
400
300
200
100
100 Hz
10 kHz
−40 −20 0 20 40 60 80 100 120
240
220
200
180
160
140
120
100100
SWITCHING FREQUENCY (kHz)
Figure 14. Switching Frequency vs.
Temperature (12 V V
IN
, 3 LEDs, 0.7 A, 0.47 mH)
TEMPERATURE (°C)