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

CAT3604
TYPICAL CHARACTERISTICS
V_IN = 3.6V, EN = V_IN, C_IN = C_OUT = 1µF, R_SET = 24kΩ, T_AMB = 25˚C, unless otherwise specified.
Ground Current vs. Input Voltage (1.5x mode)
5.0
Supply Current vs. Input Voltage
100
4.0
80
1.5x mode
1x mode
3.0
60
2.0
1.0
VIN = 3.6V
all LEDs open
0.0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
40
20
4 LEDs at 15mA
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
Oscillator Frequency vs. Input Voltage
1.10
Oscillator Frequency vs. Temperature
1.10
1.05
1.05
1.00
4 LEDs at 20mA
0.95
0.90
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
Output Resistance vs. Input Voltage (1x mode)
4
1.00
0.95
VIN = 3.6V
4 LEDs at 15mA
0.90
-40 -20 0 20 40 60 80 100
TEMPERATURE [˚C]
Output Resistance vs. Input Voltage (1.5x mode)
10
3
100mA load
2
1
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
8
100mA load
6
25mA load
4
2
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. 5008, Rev. I