CAT3648 Datasheet, PDF (6/14 Pages) Catalyst Semiconductor – 4-Channel Ultra High Efficiency Quad-Mode™ LED Driver with 32 Dimming Levels

CAT3648
TYPICAL PERFORMANCE CHARACTERISTICS
(V_IN = 3.6 V, I_OUT = 80 mA (4 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 9. 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 10. Output Resistance vs. Input Voltage
Figure 11. Power Up in 1x Mode
Figure 12. Power Up in 1.33x Mode
Figure 13. Power Up in 1.5x Mode
Figure 14. Power Up in 2x Mode
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