NCP5010
TYPICAL OPERATING CHARACTERISTICS
3
2
3 LEDs
4 LEDs
1
5 LEDs
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V IN (V)
Figure 15. Typical Skip Mode Threshold vs. V IN
(C OUT = 1 m F X5R 25 V )
Figure 17. Continuous Current Mode (CCM)
1 SW, 5 V/div DC, 4 I SW , 50 mA/div, DC, I OUT = 15 mA
Figure 19. Startup for LED Operating, 4 LEDS
R BF = 22 W , 1 CTRL, 2 V/div DC, 2 FB, 500 mV/div DC,
4 I L 100 mA/div, T = 100 m s/div
Figure 16. Typical V OUT Ripple in OVP Conditions
1 V OUT , 500 mV/div, AC 3 V OUT , 5 V/div, DC
Figure 18. Discontinuous Current Mode (DCM)
1 SW, 5 V/div DC, 4 I SW , 50 mA/div, DC, I OUT = 1 mA
Figure 20. Duty Cycle Control Waveforms
1 CTRL, 2 V/div DC, 2 FB, 500 mV/div DC,
4 I L 100 mA/div, T = 1 ms/div
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