CAT3643 Datasheet, PDF (6/17 Pages) Catalyst Semiconductor – 3-Channel Ultra High Efficiency Quad-Mode TM LED Driver

CAT3643
TYPICAL PERFORMANCE CHARACTERISTICS
V_IN = 3.6V, I_OUT = 60mA (3 LEDs at 20mA), C_IN = C_OUT = C₁ = C₂ = 1μF, T_AMB = 25°C unless otherwise specified.
Switching Frequency vs. Temperature
1.3
Output Resistance vs. Input Voltage
12
1.2
1.5x Mode
1.1
1.0
0.9
1.33x, 2x Mode
0.8
0.7
-40
0
40
80 120
TEMPERATURE [°C]
10
2x
8
6
1.5x
4
1.33x
2
1x
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
Power Up in 1x Mode
Power Up in 1.33x Mode
Power Up in 1.5x Mode
Power Up in 2x Mode
Doc. No. 5022, Rev. B
6
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice