CAT32_08 Datasheet, PDF (4/14 Pages) Catalyst Semiconductor – CMOS White LED Driver

CAT32
TYPICAL CHARACTERISTICS
V_IN = 3.6V, T_AMB = 25ºC, C_IN = 4.7µF, C_OUT = 1µF, L = 6.8µH, unless otherwise specified.
Quiescent Current vs. Input Voltage
600
Quiescent Current vs. Temperature
600
VIN = 7V
500
500
400
400
VIN = 2V
300
300
200
2
3
4
5
6
7
INPUT VOLTAGE [V]
200
-50
-25 0 25 50 75
TEMPERATURE [ºC]
100 125
Switching Frequency vs. Input Voltage
2.00
1.60
1.20
0.80
0.40
0.00
2
3
4
5
6
7
INPUT VOLTAGE [V]
LED Current vs. Input Voltage
35
R_SET = 750Ω
30
25
R_SET = 1.13kΩ
20
R_SET = 1.50kΩ
15
R_SET = 2.26kΩ
10
5
0
2
3
4
5
6
7
INPUT VOLTAGE [V]
Switching Frequency vs. Temperature
2.0
1.6
1.2
0.8
0.4
0.0
-50 -25 0 25 50 75 100 125
TEMPERATURE [ºC]
LED Current vs. Temperature
20
15
10
5
0
-50 -25
0 25 50 75
TEMPERATURE [ºC]
100 125
Doc. No. MD-5001 Rev. AD
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice