AP3019 Ver la hoja de datos (PDF) - BCD Semiconductor
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AP3019 Datasheet PDF : 15 Pages
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WHITE LED STEP-UP CONVERTER
Typical Performance Characteristics (Continued)
(VF of WLED is 3.45V @ IF=20mA, unless otherwise noted )
Preliminary Datasheet
AP3019
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-50
-25
0
25
50
75
100
Junction Temperature (oC)
Figure 12. Switching Frequency
vs. Junction Temperature
210
208
206
204
202
200
198
196
194
192
190
-50
-25
0
25
50
75
100
Junction Temperature (oC)
Figure 13. Feedback Voltage
vs. Junction Temperature
0.80
0.78
0.76
0.74
0.72
0.70
0.68
0.66
0.64
0.62
0.60
-50
-25
0
25
50
75
100
Junction Temperature (oC)
Figure 14. Schottky Forward Drop
vs. Junction Temperature
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
-50
V =10V
R
V =16V
R
V =23V
R
-25
0
25
50
75
100
Junction Temperature (oC)
Figure 15. Schottky Leakage Current
vs. Junction Temperature
Apr. 2007 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
8
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