CAT4004 Datasheet, PDF (4/10 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.)
1.4
1.4
1.2
1.2
1.0
1.0
0.8
0.8
0.6
2.5 3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Figure 3. Quiescent Current vs. Input Voltage
0.6
−40
0
40
80
120
TEMPERATURE (°C)
Figure 4. Quiescent Current vs. Temperature
1.0
10
0.8
8
0.6
6
0.4
4
0.2
2
0
0
−0.2
−2
−0.4
−4
−0.6
−6
−0.8
−8
−1.0
−10
3.0
3.5
4.0
4.5
5.0
5.5
−40
0
40
80
120
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Figure 5. LED Current Change vs. Input
Voltage
Figure 6. LED Current Change vs.
Temperature
40
30
20
10
0
0
5
10
15
20
RSET (kW)
Figure 7. LED Current vs. RSET Resistor
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