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參數(shù)資料
| 型號： | TB62757FUG |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1430 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 0.95 MM, PITCH, LEAD FREE, PLASTIC, SSOP-6 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 516K |
| 代理商： | TB62757FUG |
TB62757FUG
2006-02-206
16
4. Application Circuit Example and Measurement Data (reference data)
* VOUT voltage in driving 5 or 6 LEDs must be lower
than OVD detection level. (VOUT < 19 V)
Note: These application examples are provided for reference only. Thorough evaluation and testing should be
implemented when designing your application’s mass production design.
S-Di
L1
VIN =
2.8 to 5.5 V
C
1
=2.2
F
C
2
=1.0
F
R
SENS
=16
VIN
SW
OVD
FB
GND
SHDN
WLEDs
2 to 6
Evaluation conditions (Ta = 25°C)
L1
: VLF3010A series (TDK Corp.)
(Size: 3.0 mm
× 3.0 mm × 1.0 mm)
C1
: C2012JB1E225K (TDK Corp.)
C2
: C2012JB1E105K (TDK Corp.)
S-Di
: CUS02 1 A/30 V (TOSHIBA Corp.)
WLEDs: NSCW215T (NICHIA Corp.)
Input Voltage - Efficiency/Output Current
2LED Drive, L=4.7H
10
15
20
25
30
35
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
VIN(V)
IO
U
T
(m
A
)
50
60
70
80
90
100
E
ff
ici
e
n
cy(
%
)
IOUT
Efficiency
I F
(mA
)
IF
Efficiency
Input Voltage - Efficiency/Output Current
5LED Drive, L=10H
10
15
20
25
30
35
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
VIN(V)
IO
U
T
(m
A
)
50
60
70
80
90
100
E
ff
ici
e
n
cy(
%
)
IOUT
Efficiency
I F
(mA
)
IF
Efficiency
Input Voltage - Efficiency/Output Current
3LED Drive, L=6.8H
10
15
20
25
30
35
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
VIN(V)
IO
U
T
(m
A
)
50
60
70
80
90
100
E
ff
ici
e
n
cy(
%
)
IOUT
Efficiency
I F
(mA
)
IF
Efficiency
Input Voltage - Efficiency/Output Current
6LED Drive, L=10H
10
15
20
25
30
35
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
VIN(V)
IO
U
T
(m
A
)
50
60
70
80
90
100
E
ff
ici
e
n
cy(
%
)
IOUT
Efficiency
I F
(mA
)
IF
Efficiency
Input Voltage - Efficiency/Output Current
4LED Drive, L=6.8H
10
15
20
25
30
35
2.8
3.1
3.4
3.7
4
4.3
4.6
4.9
5.2
5.5
VIN(V)
IO
U
T
(m
A
)
50
60
70
80
90
100
E
ff
ici
e
n
cy(
%
)
IOUT
Efficiency
I F
(mA
)
IF
Efficiency
<Measurement Data>
Efficiency in the range of VIN = 2.8 to 5.5 V
Efficiency (%)
Average Efficiency (%)
2 LEDs
79.85 to 86.97
84.02
3 LEDs
80.19 to 85.32
83.39
4 LEDs
78.77 to 83.60
80.69
5 LEDs
79.72 to 86.39
82.87
6 LEDs
78.91 to 85.10
80.49
Output current in the range of VIN = 3.0 to 5.0 V (VIN = 3.6 V typ.)
Tolerance (%)
Output Current (mA)
VIN = 3.6 V
Min
Max
2 LEDs
21.19
3.08
1.67
3 LEDs
20.89
1.86
1.33
4 LEDs
20.64
1.68
1.11
5 LEDs
20.10
1.82
1.22
6 LEDs
19.95
1.94
1.26
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