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AP1521 датащи(PDF) 7 Page - Anachip Corp

номер детали AP1521
подробное описание детали  White LED Step-Up Converter
PDF  8 Pages
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производитель  ANACHIP [Anachip Corp]
домашняя страница  
Logo ANACHIP - Anachip Corp

AP1521 датащи(HTML) 7 Page - Anachip Corp

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AP1521
White LED Step-Up Converter
Anachip Corp.
www.anachip.com.tw
Rev. 0.1 Apr. 27, 2004
7/8
Typical Performance Characteristics (Continued)
Li-lon to Five White LEDs
V
IN
SW
SHDN
GND
FB
C
IN: TAIYO YUDEN JMK107BJ105
C
OUT: AVX 0603YD224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
AP1521
V
DC
Dimming
C
OUT
0.22uF
R1
6.8Ω
L
22uH
D
V
IN
3.3V To 5V
C
IN
1uF
90k
5k
AP1521 Efficiency(%) v.s. LED
Current (mA)
57
60
63
66
69
72
75
78
81
84
0
1020
304050
LED Current (mA)
Vin=5V
Vin=4.2V
Vin=3.6V
Li-lon to Six White LEDs
V
IN
SW
SHDN
GND
FB
C
IN: TAIYO YUDEN JMK107BJ105
C
OUT: AVX 0603YD224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
AP1521
V
DC
Dimming
C
OUT
0.22uF
R1
6.8Ω
L
22uH
D
V
IN
3.6V To 5V
C
IN
1uF
90k
5k
AP1521 Efficiency(%) v.s. LED
Current (mA)
57
60
63
66
69
72
75
78
81
84
0
1020
3040
50
LED Current (mA)
Vin=5V
Vin=4.2V
Vin=3.6V
Step up DC-DC Regulator
V
IN
SW
SHDN
GND
FB
C
IN: TAIYO YUDEN JMK107BJ105
C
OUT: AVX 0603YD224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
AP1521
C
OUT
0.22uF
1K
L
22uH
D
V
IN
2.5V~3.3V
C
IN
1uF
15K
V
OUT
4.8V
AP1521 Efficiency(%) v.s. Load
Current (mA)@Vout=4.8V
60
65
70
75
80
85
90
0
1020
304050
Load Current (mA)
Vin=3.3V
Vin=2.5V



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