CAT3649
TYPICAL PERFORMANCE CHARACTERISTICS
(V IN = 3.6 V, PWM = V IN , I OUT = 120 mA (6 LEDs at 20 mA), C IN = C OUT = C 1 = C 2 = 1 m F, C PWM = 47 nF,
T AMB = 25 ° C unless otherwise specified.)
2.0
1.6
1.2
0.8
0.4
V HI
V LO
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Figure 16. ADIM, PWM V HI V LO vs. VIN
Figure 18. Operating Waveforms in 1x Mode
Figure 20. Switching Waveforms in 1.5x Mode
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7
Figure 17. Power Down Delay (1x Mode)
Figure 19. Switching Waveforms in 1.33x Mode
Figure 21. Switching Waveforms in 2x Mode
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