CAT3643
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, IOUT = 60mA (3 LEDs at 20mA), CIN = COUT = C1 = C2 = 1μF, TAMB = 25°C unless otherwise specified.
Switching Frequency vs. Temperature
Output Resistance vs. Input Voltage
12
1.3
2x
10
8
1.2
1.5x Mode
1.1
1.0
6
1.33x
1.5x
4
0.9
1.33x, 2x Mode
2
1x
0.8
0.7
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
-40
0
40
80
120
TEMPERATURE [°C]
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