CAT3604 Datasheet, PDF (7/11 Pages) Catalyst Semiconductor – 4-Channel Regulated Charge Pump White LED Driver

CAT3604
TYPICAL CHARACTERISTICS
(V_IN = 3.6 V, EN = V_IN, C_IN = C_OUT = 1 mF, R_SET = 24 kW, T_AMB = 25°C, unless otherwise specified.)
5
100
4
80
1.5x Mode
1x Mode
3
60
2
VIN = 3.6 V
1
all LEDs open
0
3.0 3.2
3.4
3.6
3.8
4.0
4.2
INPUT VOLTAGE (V)
Figure 9. Ground Current vs. Input Voltage
(1.5x Mode)
1.10
40
20
4 LEDs at 15 mA
0
3.0 3.2
3.4
3.6
3.8
4.0 4.2
INPUT VOLTAGE (V)
Figure 10. Supply Current vs. Input Voltage
1.10
1.05
1.05
1.00
1.00
0.95
4 LEDs at 20 mA
0.90
3.0 3.2
3.4
3.6
3.8
4.0
4.2
INPUT VOLTAGE (V)
Figure 11. Oscillator Frequency vs. Input
Voltage
4
VIN = 3.6 V
0.95
4 LEDs at 15 mA
0.90
−40 −20
0
20
40
60
80 100
TEMPERATURE (°C)
Figure 12. Oscillator Frequency vs.
Temperature
10
3
2
100 mA load
1
0
3.0 3.2
3.4
3.6
3.8
4.0
4.2
INPUT VOLTAGE (V)
Figure 13. Output Resistance vs. Input Voltage
(1x Mode)
8
100 mA load
6
25 mA load
4
2
3.0 3.2
3.4
3.6
3.8
4.0 4.2
INPUT VOLTAGE (V)
Figure 14. Output Resistance vs. Input Voltage
(1.5x Mode)
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