CAT3603 Datasheet, PDF (4/11 Pages) Catalyst Semiconductor – 3-Channel LED Driver in 3x3mm Package

CAT3603
TYPICAL CHARACTERISTICS
(VIN = 3.6 V, I_OUT = 60 mA (3 LEDs at 20 mA), C₁ = C₂ = C_IN = C_OUT = 1 mF, T_AMB = 25°C unless otherwise specified.)
100
1x Mode
90
80
1.5x Mode
100
90
VIN = 4 V (1x Mode)
80
70
20 mA per LED
60
70
15 mA per LED
60
VIN = 3.2 V (1.5x Mode)
50
40
4.2 4.0
3.8
3.6
3.4
3.2
3.0
INPUT VOLTAGE (V)
Figure 2. Efficiency vs. Input Voltage
(3 LEDs on)
0.8
50
40
0
20
40
60
80
100
LED CURRENT (mA)
Figure 3. Efficiency vs. Total LED Current
(3 LEDs)
0.8
0.6
0.6
0.4
0.4
0.2
LEDs Off
0
3.0 3.2
3.4
3.6
3.8
4.0
4.2
INPUT VOLTAGE (V)
Figure 4. Quiescent Current vs. Input Voltage
(1x Mode)
6.0
5.0
4.0
3.0
2.0
1.0
LEDs Off
0
3.0 3.2
3.4
3.6
3.8
4.0
4.2
INPUT VOLTAGE (V)
Figure 6. Quiescent Current vs. Input Voltage
(1.5x Mode)
0.2
LEDs Off
0
−40
0
40
80
120
TEMPERATURE (°C)
Figure 5. Quiescent Current vs. Temperature
(1x Mode)
6.0
5.0
4.0
3.0
2.0
1.0
0
−40
LEDs Off
0
40
80
120
TEMPERATURE (°C)
Figure 7. Quiescent Current vs. Temperature
(1.5x Mode)
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