CAT3643 Datasheet, PDF (8/15 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.)
4.0
40
3.5
1x Mode
3.0
30
2.5
2.0
20
1.5
1.0
10
0.5
0
0
100
200
300
400
OUTPUT CURRENT (mA)
Figure 22. Foldback Current Limit
0
0
50
100
150
200
250 300
LED PIN VOLTAGE (mV)
Figure 23. LED Current vs. LED Pin Voltage
Figure 24. Dimming Waveform
Figure 26. Disconnecting a Single LED
Figure 25. Line Transient Response
50
40
30
20
10
0
1
10
100
RSET RESISTANCE (kW)
Figure 27. LED Current vs. RSET
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