CAT3626 Datasheet, PDF (4/14 Pages) Catalyst Semiconductor – 6-Channel LED Driver with I2C Interface

CAT3626
TYPICAL CHARACTERISTICS
VIN = 3.6V, IOUT = 90mA (6 LEDs at 15mA), EN = VIN, C_IN = C1 = C2 = C_OUT = 1µF, T_AMB = 25ºC, unless
otherwise specified.
Efficiency vs. Input Voltage (6 LEDs)
100
1x Mode
90
15mA per LED
80
70
60
1.5x Mode
50 _{20mA per LED}
40
4.2 4.0 3.8 3.6 3.4 3.2 3.0
INPUT VOLTAGE [V]
Efficiency vs. Total LED Current (6 LEDs)
100
90
VIN = 4V (1x mode)
80
70
60
50 VIN = 3.2V (1.5x mode)
40
0
50 100 150 200
TOTAL LED CURRENT [mA]
Quiescent Current vs. Input Voltage (1x Mode)
0.8
Quiescent Current vs. Temperature (1x Mode)
0.8
0.6
0.6
0.4
6 LEDs OFF
0.2
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
Quiescent Current vs. Input Voltage (1.5x Mode)
5
4
3
2
6 LEDs OFF
1
0
3.0 3.2 3.4 3.6 3.8 4.0 4.2
INPUT VOLTAGE [V]
0.4
0.2
6 LEDs OFF
0.0
-40
0
40
80 120
TEMPERATURE [°C]
Quiescent Current vs. Temperature (1.5x Mode)
5
4
3
2
1
6 LEDs OFF
0
-40
0
40
80 120
TEMPERATURE [°C]
Doc. No. 5014 Rev. A
4
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice