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CAT3604V Datasheet, PDF (5/14 Pages) Catalyst Semiconductor – 4-Channel Quad-Mode™ LED Driver with Open/Short LED Detection | |||
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CAT3604V
TYPICAL PERFORMANCE CHARACTERISTICS
(VIN = 3.6 V, IOUT = 80 mA (4 LEDs at 20 mA), CIN = COUT = C1 = C2 = 1 mF, TAMB = 25°C unless otherwise specified.)
100
VF = 3.3 V
90
1x
80
70
1.33x
1.5x
2x
100
VF = 3.3 V
90
1x
80
70
1.33x
60
60
50
40
4.5
4.0
3.5
3.0
2.5
2.0
INPUT VOLTAGE (V)
Figure 3. Efficiency vs. Input Voltage
50
40
4.2 4.0
3.8
3.6
3.4
3.2 3.0
INPUT VOLTAGE (V)
Figure 4. Efficiency vs. LiâIon Voltage
4
VF = 3.3 V
3
2
1
LEDs Off
0
5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0
INPUT VOLTAGE (V)
Figure 5. Quiescent Current vs. Input Voltage
4
3
2x
1.5x
2 1.33x
1x
1
0
â40
0
40
80
120
TEMPERATURE (°C)
Figure 6. Quiescent Current vs. Temperature
10
8 VF = 3.3 V
6
4
2
0
â2
â4
â6
â8
â10
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 7. LED Current Change vs. Input
Voltage
10
8
6
4
2
0
â2
â4
â6
â8
â10
â40
VF = 3.3 V
0
40
80
120
TEMPERATURE (°C)
Figure 8. LED Current Change vs.
Temperature
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