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NCP5030
TYPICAL PERFORMANCE CHARACTERISTICS
100
95
90
85
80
75
70
65
60
100 mA
900 mA
400 mA
55
Efficiency = 100 X (P LED /P IN )
50
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V IN (V)
Figure 4. Efficiency vs. V IN LED = Lumileds
LUXEON III, L = TDK RLF7030T ? 4R7
100
90
80
V in = 3.9 V
V in = 5.5 V
V in = 4.5 V
100
90
80
V in = 4.4 V
70
60
70
60
V in = 4.0 V
V in = 3.4 V
50
0
100
200
300
400
500
600
700
800
900
50
0
100
200
300
400
500
600
700
800 900
100
I out (mA)
Figure 5. Buck Mode Efficiency vs. I OUT @
V OUT = 3.1 V L = TDK RLF7030T ? 4R7
4.0
I out (mA)
Figure 6. Buck ? Boost Mode Eff. vs. I OUT @
V OUT = 3.8 V L = TDK RLF7030T ? 4R7
90
80
V in = 3.6 V
V in = 4.1 V
V in = 3.1 V
3.5
3.0
2.5
2.0
V in = 3.6 V
70
60
1.5
1.0
0.5
50
0
100
200
300
400
500
600
700
800
900
0
10
100
1000
I out (mA)
Figure 7. Boost Mode Efficiency vs. I OUT @
V OUT = 5.0 V L = TDK RLF7030T ? 4R7
http://onsemi.com
6
R PCA (k W )
Figure 8. I PEAK_MAX vs. R PCA
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