FAN5333A Datasheet, PDF (5/11 Pages) Fairchild Semiconductor – High Efficiency, High Current Serial LED Driver with 30V Integrated Switch

Typical Performance Characteristics
T_A = 25°C, C_IN = 4.7µF, C_OUT = 0.47µF, L = 10µH, unless otherwise noted.
Efficiency vs. Input Voltage
100
V_OUT = 9V
90
80
I_LED = 40mA
70
I_LED = 30mA
I_LED = 10mA
60
I_LED = 20mA
50
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Voltage(V)
Efficiency vs. Input Voltage
100
V_OUT = 15V
90
80
I_LED = 40mA
70
I_LED = 30mA
60
I_LED = 20mA
I_LED = 10mA
50
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Input Voltage(V)
Maximum Load Current vs. Input Voltage
300
I_LED<5%
250
CI_ILNE=D^<150%µF
CCIONU⁼_T ^{1=01µµFF}
200
C_OUT = 1µF
T_A = 25°C
150
100
T_A = -40°C
50
V_OUT = 15V
T_A = 85°C
0
2
3
4
5
Input Voltage (V)
LED Current vs Temperature
10.8
10.6
10.4
V_IN = 5.5V
V_IN = 2.2V
V_OUT = 15V
10.2
10.0
V_IN = 3.6V
9.8
9.6
-40
-20
0
20
40
60
80
Temperature (°C)
Maximum Load Current vs.Input Voltage
200
150
∆I_LED<5%
C_IN = 10µF
C_OUT = 1µF
100
V_OUT = 9.3V
V_OUT = 12.3V
50
0
2.0
V_OUT = 14.2V
2.5
3.0
3.5
4.0
Input Voltage (V)
SW Frequency vs Temperature
2.0
V_OUT = 15V
1.8
V_IN = 3.6V
1.6
V_IN = 5.5V
1.4
V_IN = 2.2V
1.2
-40
-20
0
20
40
60
80
Temperature (°C)
5
FAN5333A/FAN5333B Rev. 1.0.1
www.fairchildsemi.com