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參數(shù)資料
| 型號： | TB62731FUG |
| 廠商： | Toshiba Corporation |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Step-up DC-DC Converter for White LED Driver |
| 中文描述： | 升壓型DC - DC轉(zhuǎn)換器，用于白光LED驅(qū)動器 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 250K |
| 代理商： | TB62731FUG |
TB62731FUG
2006-06-14
13
Application Circuit Example 1
(characteristic using recommended coil as reference)
Though it is necessary to consider the DC resistance of L1, an inductance of 33 to 47 (typ.) to 68
μ
H is suitable for
turning on four LEDs.
Input voltage V
IN
(V)
Input voltage – power efficiency/mean current
Input voltage V
IN
(V)
P
η
M
F
40
100
70
50
4.2
3.2
3.6
3.8
60
80
3.4
4
90
10
25
15
20
η
IF
40
100
70
50
4.2
3.2
3.6
3.8
60
80
3.4
4
90
10
25
15
20
η
IF
40
100
70
50
4.2
3.2
3.6
3.8
60
80
3.4
4
90
10
25
15
20
η
IF
Input voltage – power efficiency/mean current
Input voltage V
IN
(V)
P
η
M
F
Input voltage – power efficiency/mean current
P
η
M
F
L1: Toko A914BYW-470M
S-Di: Toshiba 1SS404 20 V/1A
LED: Nichia NSCW215T
R_sens: Rohm MCR03-1R8
R_ sens
1.8
V
IN
3.2 V~4.2 V
C1
10
μ
F
ON
OFF
I
F
20 mA
L1
47
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
L1: Toko A914BYW-470M
S-Di: Toshiba 1SS404 20 V/1A
LED: Nichia NSCW215T
R_sens: Rohm MCR03-1R8
R_ sens
1.8
V
IN
3.2 V~4.2 V
C1
10
μ
F
ON
OFF
L1
47
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
I
F
20 mA
L1: Toko A914BYW-470M
S-Di: Toshiba 1SS404 20 V/1A
LED: Nichia NSCW215T
R_sens: Rohm MCR03-1R8
R_sens
1.8
V
IN
3.2 V~4.2 V
C1
10
μ
F
ON
OFF
I
F
20 mA
L1
47
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
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