ame5142 AME, Inc., ame5142 Datasheet - Page 14

• Manufacturer Part Number: ame5142
• Description: White Led Boost Converter In Tiny Package
• Manufacturer: AME, Inc.

n Application Hints
14
AME5142
4.7 F
4.7 F
4.7 F
V
C
V
C
V
Figure 12: Eight White LEDs Application in Li-Ion Battery
Figure 13: Eight White LEDs Application in Li-Ion Battery
C
IN
IN
IN
IN
IN
IN
Figure 11: Six White LEDs Application in Li-Ion Battery
3.3V to 5.5V
3.3V to 5.5V
3.3V to 5.5V
AME, Inc.
IN
IN
EN
GND
EN
GND
IN
EN
GND
AME5142
AME5142
AME5142
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
R2
7.5
R2
R2
V
V
V
OUT
OUT
OUT
C
1 F
C
1 F
C
1 F
OUT
OUT
OUT
White LED Boost Converter
100
90
85
80
75
70
65
60
55
50
95
90
85
80
90
85
80
75
70
65
60
55
50
0
3
0
V
IN
3. 5
= 4.2V
10
V
10
IN
V
V
= 3. 3V
IN
Efficiency Vs I
Efficiency Vs I
IN
Efficiency Vs V
= 3.3V
= 4.2V
V
IN
V
4
I
IN
= 3.6V
OUT
I
OUT
= 3.6V
In Tiny Package
V
20
IN
(mA)
20
(mA)
(v)
4.5
OUT
OUT
V
30
I
IN
LED
OUT
V
V
30
I
I
LED
OUT
OUT
OUT
= 20mA
=12.5V
5
= 20mA
= 9.3V
= 40mA
= 12.5V
Rev. A.04
40
5.5
40