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參數(shù)資料
| 型號(hào)： | TB62731FUG |
| 廠商： | Toshiba Corporation |
| 元件分類： | LED驅(qū)動(dòng)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(dòng)器 |
| 文件頁(yè)數(shù)： | 14/20頁(yè) |
| 文件大?。?/td> | 250K |
| 代理商： | TB62731FUG |
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TB62731FUG
2006-06-14
14
Application Circuit Example 2
(characteristic using flat coil for handy terminal as reference)
Flat coils suitable for handy terminals have a large DC resistance; thus, the power efficiency drops slightly, to
about 70%.
Input voltage V
IN
(V)
Input voltage – power efficiency/mean current
P
η
A
F
Input voltage – power efficiency/mean current
Input voltage V
IN
(V)
P
η
A
F
Input voltage – power efficiency/mean current
Input voltage V
IN
(V)
P
η
A
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
L1: Toko A914BYW-270M
S-Di: Toshiba 1SS404 20 V/1A
LED: Nichia NSCW215T
R_sens: Susumu RL0510S-1R8
R_sens
1.8
V
IN
3.2 V~4.2 V
C1
10
μ
F
ON
OFF
I
F
20 mA
L1
27
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
L1: TDK LDR344812T-390
S-Di: Toshiba 1SS404 20 V/1A
LED: Nichia NSCW215T
R_sens: Susumu RL0510S-1R8
R_sens
1.8
V
IN
3.2 V~4.2 V
C1
10
μ
F
ON
OFF
I
F
20 mA
L1
39
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
L1: TDK LDR344812T-440
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
or
16 mA
L1
44
μ
H
S-Di
C2
1
μ
F
V
CC
A
SHDN
GND
GND
K
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