AME5142 Datasheet, PDF (9/18 Pages) Analog Microelectronics – White LED Boost Converter In Tiny Package

AME, Inc.
AME5142
Max Duty Cycle vs. Temperature
92.0
91.8
91.6
91.4
91.2
91.0
90.8
90.6
90.4
90.2
90.0
89.8
89.6
89.4
89.2
89.0
88.8
88.6
88.4
88.2
88.0
-25
0
25
50
75
100
125
Temperature (^oC)
Switch RDSON
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
2.7
T_A = 85^oC
3.1
3.5
3.9
4.3
V_IN (V)
T_A = 25^oC
4.7
5.1
5.5
Efficiency vs. Load Current
Dirving 4 LEDs
100
90
80
70
60
50
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
V_IN (V)
Rev. A.01
White LED Boost Converter
In Tiny Package
Oscillator Frequency vs. Temperature
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
-25
0
25
50
75
100
125
Temperature (^oC)
Efficiency vs. Load Current
Dirving 3 LEDs
100
90
80
70
60
50
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
V_IN (V)
Efficiency vs. Load Current
Dirving 6 LEDs
100
90
80
70
60
50
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
V_IN (V)
11