AP3019A 查看數據表（PDF） - BCD Semiconductor
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AP3019A Datasheet PDF : 15 Pages
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WHITE LED STEP-UP CONVERTER
Typical Performance Characteristics
WLED forward voltage (VF) is 3.45V at IF=20mA, unless otherwise noted.
Data Sheet
AP3019A
83
82
81
80
79
78
77
76
75
74
73
-50
V =3.6V, I =20mA, 8 LEDs
IN
OUT
C =1µF, C =0.22µF, L=22µH
IN
OUT
-25
0
25
50
75
100
Junction Temperature (oC)
86
84
82
80
78
76
74
72
70
3.0
I =20mA, 8 LEDs,T =25OC
OUT
A
C =1µF, C =0.22µF, L=22µH
IN
OUT
3.5
4.0
4.5
5.0
Input Voltage (V)
Figure 4. Efficiency vs. Junction Temperature
Figure 5. Efficiency vs. Input Voltage
86
85
84
83
82
81
80
79
78
V =3.6V, I =20mA,T =25OC
IN
OUT
A
C =1µF, C =0.22µF, L=22µH
77
IN
OUT
76
2
3
4
5
6
7
8
LED's Number
Figure 6. Efficiency vs. LED’s Number
350
300
250
200
150
100
50
0
0
200
400
600
800
1000
Schottky Forward Drop (mV)
Figure 7. Schottky Forward Current vs.
Schottky Forward Drop
Mar. 2010 Rev. 1.7
BCD Semiconductor Manufacturing Limited
6
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