CAT4004 Datasheet, PDF (5/10 Pages) Catalyst Semiconductor – 4-Channel Constant Current LED Driver with EZDi TM

CAT4004
TYPICAL PERFORMANCE CHARACTERISTICS
(V_IN = 4 V, V_F = 3.3 V, I_OUT = 80 mA (4 LEDs at 20 mA), C_IN = 1 mF, T_AMB = 25°C unless otherwise specified.)
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.2
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 8. RSET Pin Voltage vs. Input Voltage
0.3
0.2
−40
0
40
80
120
TEMPERATURE (°C)
Figure 9. RSET Pin Voltage vs. Temperature
40
40
30
30
20
20
10
10
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
LED PIN VOLTAGE (V)
Figure 10. LED Current vs. LED Pin Voltage
0
0
50
100
150
200 250 300
LED PIN VOLTAGE (mV)
Figure 11. Dropout Characteristics
100
90
80
70
60
50
5.0 4.5
4.0
3.5
3.0
2.5
2.0
INPUT VOLTAGE (V)
Figure 12. Efficiency vs. Input Voltage
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