ame5142c AME, Inc., ame5142c Datasheet - Page 17

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

Rev. B.01
AME5142C
4.7 F
4.7 F
4.7 F
V
C
V
C
V
C
IN
IN
IN
IN
IN
IN
Figure 16: Circuit For Driving 2 Strings of 6 White LEDs
Figure 14: Circuit For Driving 2 Strings of 5 White LEDs
3.3V to 5.5V
3.3V to 5.5V
3.3V to 5.5V
Figure 15: Circuit For Driving 2 Strings of 6 White LEDs
AME
IN
EN
GND
IN
IN
EN
GND
EN
GND
AME5142C
AME5142C
AME5142C
10 H
10 H
10 H
L1
L1
L1
OVP
OVP
OVP
SW
SW
SW
FB
FB
FB
7.5
7.5
7.5
R2
R2
R2
7.5
7.5
7.5
R2
R2
R2
V
V
V
OUT
OUT
OUT
High Efficiency 6 White LED Driver
C
C
C
1 F
1 F
1 F
OUT
OUT
OUT
100
90
85
80
75
70
65
60
55
50
90
85
80
75
70
65
60
55
50
95
90
85
80
0
0
3
With Open LED Protection
V
V
IN
IN
= 3.3V
V
= 3.3V
IN
= 3.6V
V
3.5
IN
= 4.2V
10
10
Efficiency Vs I
Efficiency Vs I
Efficiency Vs V
I
4
OUT
I
OUT
V
V
V
20
(mA)
IN
20
I N
(mA)
IN
= 3.6V
(v)
= 4.2V
4.5
OUT
OUT
IN
V
I
30
30
V
LED
V
I
OUT
LED
I
OUT
OUT
OUT
= 20mA
5
=18.6V
= 20mA
= 40mA
= 18.6V
=15.6V
40
40
5.5
17