PAM2810 Datasheet, PDF (5/10 Pages) Power Analog Micoelectronics – 4-Channel Programmable LED Current Sink

PAM2810
4-Channel Programmable LED Current Sink
Typical Performance Characteristics
T_A=25°C, V = _IN 3.6V, R_S = _ET 5.1kΩ, V = _LEDX 0.5V, unless otherwise noted.
45
40
35
30
25
20
15
10
5
0
0
LED Current VS LED Pin Voltage
R=12.7KΩ
R=4.3KΩ
0.3
0.6
0.9
LED Pin Voltage(V)
R=6.2KΩ
R=3.2KΩ
1.2
1.5
45
40
35
30
25
20
15
10
5
0
3
LED Curent VS Input Voltage
R=12.7KΩ
R=4.3KΩ
R=6.2KΩ
R=3.2KΩ
3.5
4
4.5
5
5.5
Input Voltage(V)
1.2135
VIset VS Input Voltage
1.2125
1.2115
1.2105
1.2095
1.2085
1.2075
3
3.5
4
4.5
5
5.5
Input Voltage(V)
50
45
40
35
30
25
20
15
10
5
0
0
LED Current VS Rset
5
10
15
20
Rset(kΩ)
Efficiency VS Input Voltage
100
90
80
70
60
50
40
30
20
10 ^Rset=6.2k
0
3
3.25 3.5 3.75
4
4.25 4.5
Input Voltage(V)
LED Current vs PWM Duty Cycle
30
25
20
15
10
5
0
0
20
40
60
80
100
PWM Duty Cycle (%)
Power Analog Microelectronics,Inc
www.poweranalog.com
5
07/2008 Rev 1.1