AME, Inc.
AME5136
Feedback Voltage vs. V
IN
(4LEDs)
0.25
0.23
Integrated White LED Driver With
Organic LED Display Power Supply
EN Threshold vs. V
IN
1.5
1.4
1mA
0.21
10mA
1.3
EN Threshold (V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
V
FB
(V)
0.19
0.17
0.15
0.13
0.11
2.7
20mA
T
A
=-40
o
C
T
A
=85
o
C
T
A
=25
o
C
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.5
0.4
2.5
3
3.5
4
4.5
5
5.5
V
IN
(V)
V
IN
(V)
Feedback Voltage vs. V
IN
(3LEDs)
0.27
0.27
Feedback Voltage vs. V
IN
(3LEDs)
C
OUT
= 4.7µF
0.25
C
OUT
= 1µF
0.25
10mA
V
FB
( V )
0.23
1mA
20mA
V
FB
( V )
0.23
0.21
0.21
1mA
20mA
30mA
0.19
0.19
10mA
30mA
0.17
2.7
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.5
0.17
2.7
3
3.3
3.6
3.9
4.2
4.5
4.8
5.1
5.5
V
IN
( V )
V
IN
( V )
Main Display Efficiency ( 4LEDs )
90
90
Main Display Efficiency ( 4LEDs )
Inductor=22µH
85
Inductor=10µH
85
V
IN
=4.2V
V
IN
=3.6V
80
Efficiency (%)
V
IN
=3.6V
80
V
IN
=3V
75
75
70
V
IN
=3V
V
IN
=4.2V
70
65
65
60
1
4
7
10
13
16
19
60
1
4
7
10
13
16
19
Load Current ( mA )
Load Current ( mA )
8
AME [ ANALOG MICROELECTRONICS ]
