ame5142c AME, Inc., ame5142c Datasheet - Page 15

• Manufacturer Part Number: ame5142c
• Description: High Efficiency 6 White Led Driver With Open Led Protection
• Manufacturer: AME, Inc.

n Typical Operating Characteristics
Rev. B.01
AME5142C
4.7 F
4.7 F
1 F
V
C
V
C
V
C
IN
IN
IN
IN
IN
IN
Figure 9: Circuit For Driving 2 Strings of 3 White LEDs
Figure 10: Circuit For Driving 2 Strings of 3 White LEDs
2.8V to 5.5V
3.3V to 5.5V
3.3V to 5.5V
Figure 8: Circuit For Driving 6 White LEDs
AME
IN
E N
GND
IN
EN
GND
IN
EN
GND
AME5142C
AME5142C
AME5142C
10 H
10 H
22 H
L1
L1
L1
OVP
OVP
OVP
SW
SW
SW
FB
FB
FB
7.5
7.5
R2
R2
5.1
R2
V
7.5
7.5
OUT
R2
R2
0.22 F
V
V
C
OUT
OUT
OUT
High Efficiency 6 White LED Driver
C
C
1 F
1 F
OUT
OUT
100
95
90
85
80
90
85
80
75
70
65
60
55
50
90
85
80
75
70
65
60
55
50
3
0
0
With Open LED Protection
V
IN
V
= 3.6V
IN
3.5
= 4. 2V
10
Efficiency Vs I
Efficiency Vs V
V
5
IN
= 3.3V
Efficiency Vs I
4
V
I
I
IN
OUT
OUT
= 3.6V
V
20
IN
10
(mA)
(mA)
(v)
V
4.5
V
IN
IN
OUT
= 2.7V
IN
= 4.2V
V
IN
OUT
= 3.3V
30
V
I
V
15
LED
I
OUT
LED
OUT
V
I
OUT
OUT
= 20mA
5
=18.6V
= 20mA
= 9.3V
= 40mA
= 9.3V
40
5.5
20
15