PAM2841 Datasheet, PDF (6/14 Pages) Power Analog Micoelectronics – 1.5ASW Current, 40V Precision WLED Driver

PAM2841
1.5A SW Current, 40V Precision WLED Driver
Typical Operating Characteristics
T_A=25°C,V = _DD 5V, unless otherwise noted.
5. Feedback Voltage VS Input voltage
10 LED, ILED=20mA
0.3
0.25
0.2
0.15
0.1
0.05
0
2
3
4
5
6
Input Voltage (V)
0.3
0.25
0.2
0.15
0.1
0.05
0
0
6. Feeback Voltage VS Temperature
10 LED, ILED=20mA
20
40
60
80
100
120
140
Temperature
7. LED current VS Input voltage
L=22μH, 10 LED
25
8. Frequency VS Input Voltage
10 LED
1.2
20
1
0.8
15
0.6
10
0.4
R=10
5
R=15
0.2
R=20
0
0
2
3
4
5
6
2
3
4
5
6
Vin(V)
Input Voltage(V)
Power Analog Microelectronics,Inc
www.poweranalog.com
6
08/2008 Rev 1.3