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MIC2145BMM датащи(PDF) 10 Page - Micrel Semiconductor

номер детали MIC2145BMM
подробное описание детали  High Efficiency 2.5W Boost Converter
PDF  15 Pages
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производитель  MICREL [Micrel Semiconductor]
домашняя страница  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2145BMM датащи(HTML) 10 Page - Micrel Semiconductor

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MIC2145
Micrel
MIC2145
10
May 2003
Inductor
The MIC2145 has a programmable peak current to allow the
usage of small surface mount inductors. A 10
µH or 4.7µH
inductor is recommended for most portable applications such
as powering white LEDs and biasing LCD panels. The
inductor should have a saturation current rating higher than
the peak current during circuit operation. A low ESR (Equiva-
lent Series Resistance) inductor is also desirable for high
efficiency. Below are tables that list the maximum output
current at minimum input voltage with efficiencies greater
than 80%.
V
)
n
i
m
(
N
I
V
)
x
a
m
(
N
I
T
E
S
RI
)
x
a
m
(
T
U
O
V
T
U
O
)
V
()
V
()
()
A
m
()
V
(
0
.
3
5
.
4
0
0
4
0
5
25
5
.
90
80
1
5
.
90
62
1
5
.
90
55
1
Table 3. Typical Application for 4.7
µH Inductor in
Basic Configuration
V
)
n
i
m
(
N
I
V
)
x
a
m
(
N
I
T
E
S
RI
)
x
a
m
(
T
U
O
V
T
U
O
)
V
()
V
()
()
A
m
()
V
(
0
.
3
5
.
4
0
0
2
0
0
55
5
.
45
2
20
1
5
.
40
5
12
1
5
.
40
3
15
1
Table 4. Typical Application for 4.7
µH Inductor in
Bootstrap Configuration
V
)
n
i
m
(
N
I
V
)
x
a
m
(
N
I
T
E
S
RI
)
x
a
m
(
T
U
O
V
T
U
O
)
V
()
V
()
()
A
m
()
V
(
4
.
2
5
.
4
k
0
1
0
85
5
.
95
20
1
5
.
1
10
22
1
5
.
4
15
15
1
0
.
3
5
.
4
k
0
1
0
5
15
5
.
90
50
1
5
.
1
10
42
1
5
.
4
10
35
1
6
.
3
5
.
4
k
0
1
0
5
25
5
.
90
70
1
5
.
1
10
52
1
5
.
4
10
45
1
0
.
5
5
.
9
k
0
1
0
9
10
1
5
.
1
10
3
12
1
5
.
4
10
95
1
Table 1. Typical Application for 10
µH Inductor in
Basic Configuration
V
)
n
i
m
(
N
I
V
)
x
a
m
(
N
I
T
E
S
RI
)
x
a
m
(
T
U
O
V
T
U
O
)
V
()
V
()
()
A
m
()
V
(
4
.
2
5
.
4
k
0
1
0
6
15
5
.
90
0
10
1
5
.
1
10
92
1
5
.
4
10
75
1
0
.
3
5
.
4
k
0
1
0
5
25
5
.
90
5
10
1
5
.
1
10
2
12
1
5
.
4
10
0
15
1
6
.
3
5
.
4
k
0
1
0
5
35
5
.
90
7
10
1
5
.
1
10
5
12
1
5
.
4
10
2
15
1
0
.
5
5
.
9
k
0
1
0
0
30
1
5
.
1
10
5
22
1
5
.
4
10
0
25
1
Table 2. Typical Application for 10
µH Inductor in
Bootstrap Configuration
Ω
Ω
Ω
Ω



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