CAT3643 Datasheet, PDF (6/15 Pages) Catalyst Semiconductor – 3-Channel Ultra High Efficiency Quad-Mode TM LED Driver

CAT3643
TYPICAL PERFORMANCE CHARACTERISTICS
(V_IN = 3.6 V, I_OUT = 60 mA (3 LEDs at 20 mA), C_IN = C_OUT = C₁ = C₂ = 1 mF, T_AMB = 25°C unless otherwise specified.)
1.3
12
1.2
1.5x Mode
1.1
10
2x
8
1.0
0.9
1.33x, 2x Mode
0.8
0.7
−40
0
40
80
120
TEMPERATURE (°C)
Figure 10. Switching Frequency vs.
Temperature
6
1.5x
4
1.33x
2
1x
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 11. Output Resistance vs. Input 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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