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參數(shù)資料
| 型號： | AAT1239ITP-1-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 40V Step-Up Converter for 4 to 10 White LEDs |
| 中文描述： | 40V的升壓轉(zhuǎn)換器為4至10個白光LED |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 915K |
| 代理商： | AAT1239ITP-1-T1 |
AAT1239-1
40V Step-Up Converter for 4 to 10 White LEDs
SwitchReg
TM
PRODUCT DATASHEET
20
1239-1.2007.10.1.0
w w w . a n a l o g i c t e c h . c o m
Additional Applications
C1
PVIN
VIN
LIN
SW
PGND
EN/SET
SEL
OVP
FB
AGND
2.L1
R3
12k
R2
SDS1
C2
Up to 17V/
D1
LED
D2
LED
D3
LED
D4
LED
Li-Ion
V
to = 2.7V
AAT1239-1
R1
30.1
Ω
20mA
Efficiency vs. LED Current
(4 White LEDs; R
BALLAST
= 30.1
Ω
)
I
LED
(mA)
E
74
75
76
77
78
79
80
81
82
83
84
2
4
6
8
10
12
14
16
18
20
V
IN
= 5V
V
IN
= 4.2V
V
IN
= 3.6V
Figure 12: Four LEDs In Series Configuration.
C1
PVIN
VIN
LIN
SW
PGND
EN/SET
SEL
OVP
FB
AGND
2.L1
R3
R2
SDS1
C2
Up to 30V/
D1
LED
D2
LED
D3
LED
D4
LED
Li-Ion
V
to = 2.7V
AAT1239-1
R1
30.1
Ω
20mA
D5
LED
D6
LED
D7
LED
D8
LED
Efficiency vs. LED Current
(8 White LEDs; R
BALLAST
= 30.1
Ω
)
I
LED
(mA)
E
66
68
70
72
74
76
78
80
2
4
6
8
10
12
14
16
18
20
V
IN
= 5V
V
IN
= 4.2V
V
IN
= 3.6V
Figure 13: Eight LEDs In Series Configuration.
C1
PVIN
VIN
LIN
SW
PGND
EN/SET
SEL
OVP
FB
AGND
2.L1
R3
R2
SDS1
C2
Up to 34V/
D1
LED
D2
LED
D3
LED
D4
LED
Li-Ion
V
to = 2.7V
AAT1239-1
R1
30.1
Ω
20mA
D5
LED
D6
LED
D7
LED
D8
LED
D9
LED
Efficiency vs. LED Current
(9 White LEDs; R
BALLAST
= 30.1
Ω
)
I
LED
(mA)
E
66
68
70
72
74
76
78
2
4
6
8
10
12
14
16
18
20
V
IN
= 5V
V
IN
= 4.2V
V
IN
= 3.6V
Figure 14: Nine LEDs In Series Configuration.
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