PAM2841 Datasheet, PDF (7/14 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.
9. Quiescent Current VS Input Voltage
200
180
160
140
120
100
80
60
40
20
0
2
3
4
5
Input voltage (V)
1.13
1.12
1.11
1.1
1.09
1.08
1.07
1.06
1.05
6
0
10. Frequency VS Temperature
(10 LED, I = _LED 20mA)
20
40
60
80 100 120 140
Temperature
11. LED Current VS Duty Cycle of PWM
(PWM@EN Pin)
20
18
16
Theoretic
14
12
f=100Hz
10
8
6
4
2
0
0%
20%
f=200Hz
40%
60%
f =100HZ
f =200Hz
theoretic
80%
100%
Duty Cycle of PWM
12. LED Current VS Duty Cycle of PWM
(PWM@COMP Pin)
25
20
15
10
5
0
0%
20%
40%
60%
80%
Duty Cycle of PWM
100%
Power Analog Microelectronics,Inc
www.poweranalog.com
7
08/2008 Rev 1.3