CAT3649_14 Datasheet, PDF (6/13 Pages) ON Semiconductor – 6-Channel LED Driver with 32 Dimming Levels & PWM

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 = C₁ = C₂ = 1 mF, C_PWM = 47 nF,
T_AMB = 25°C unless otherwise specified.)
100
100
90
1x
80
1.5x
70
1.33x
60
2x
50 V_F = 3.30 V, I_LED = 20 mA
V_F = 3.05 V, I_LED = 10 mA
40
4.5
4.0
3.5
3.0
2.5
2.0
INPUT VOLTAGE (V)
Figure 10. Efficiency vs. Input Voltage
90
1x
80
70
1.33x 1.5x
60
50 ^VF ^{= 3.30 V, I}LED ^{= 20 mA}
V_F = 3.05 V, I_LED = 10 mA
40
4.2 4.0
3.8
3.6
3.4
3.2 3.0
INPUT VOLTAGE (V)
Figure 11. Efficiency vs. Li−Ion Voltage
Figure 12. Power Up in 1x Mode
Figure 13. Power Up in 1.33x Mode
Figure 14. Power Up in 1.5x Mode
Figure 15. Power Up in 2x Mode
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