SC2447 Semtech Corporation, SC2447 Datasheet - Page 4

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SC2447

Manufacturer Part Number
SC2447
Description
Dual-Phase Single or Two Output Synchronous Step-Down Controller
Manufacturer
Semtech Corporation
Datasheet
Unless specified: AVCC = 12V, SYNC = 0, R
© 2006 Semtech Corp.
POWER MANAGEMENT
P
N
n I
n I
O
A
A
A
M
A
A
O
C
S
S
S
S
C
C
C
n I
C
P
N
C
P
P
P
Electrical Characteristics (Cont.)
a
o
e v
e v
m
m
m
m
m
y
Y
Y
Y
p
o
e
W
e
e
u
s
h
h
h
r u
c y
r u
i n i
c n
a r
- n
p t
a
N
N
N
a
a
t u
s
g
a
a
c
p
p
p
p
p
e r
M
t r
t r
e l
e r
i t i
m
n
n
n
i t a
k
k
l l i
C
C
C
n i
t u
i f i l
i f i l
i f i l
i f i l
i f i l
h
m
n i
n i
n
n
n
C
b -
t n
e v
u
t a
o r
S
i S
t n
O
e v
l e
l e
l e
e v
g
g
r e
r e
r e
r e
r e
n I
n I
n I
t e
o
O
m
y
o
r o
n
u
k n
i l -
m
p
p
p
c -
t r
C
n I
n I
p
F
M
M
u
r e
z i
p t
T
O
U
O
O
C
C
t u
t u
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c r
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m
m
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p
p
c y
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C
n
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u
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t a
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L
C
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q
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p t
p t
e
g
n
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r u
m
s t
M
e r
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u
m
n I
g i
c s
n
r u
C
o i
B
V
C
t u
t u
t n
F
e
w
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u
L -
P
P
G
M
t n
p
u
o
h
r u
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n
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o
n
m
S -
o
t u
2
m
e
i S
S
t n
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a
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o
V
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m
n
V
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s
t n
q
a
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d
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S
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k n
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k
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p
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G
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C
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C
C
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n
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C
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n i
n I
t n
(
n i
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) 1
c y
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2
w
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p
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P -
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T
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B
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a
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m
(
e r
) 1
a i
s
s
t i
e
s
s
OSC
C
h
S
o
= 51.1kΩ, -40°C < T
r u
n i
d l
e r
g
e l
t n
D
G
G
G
G
I
S
I
C
f
C
M
D
D
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N I
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H
I
a
1
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R
S
1
1
1
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1
1
m
, 1
M
, 1
L I
, +
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M
E
, -
,
,
O
Y
,
,
M I
M I
M
A
F
N
A
- 2
f
L
D
I
I
G
G
G
G
b
C
X
C
C
N I
2
C
X
2
1
2
H
, 1
, +
S
S
2
+
l o
M
D
D
D
D
2
- 2
2
A
N I
L
L
+
H
H
, 2
, 2
= T
2
2
2
J
S
< 125°C
o
u
V
c r
4
V
C
V
V
V
V
V
n i
S
V
V
A
A
C
C
C
C
V
C
C
S
- 1
S
V
g
S
S
S
S
V
V
S
C
C
2
0
S
1
1
2
o
=
- 2
2
O
O
+
Y
S
+
+
+
C
C
M
M
M
N
n
Y
~
I
=
V
= V
= V
= V
= V
c n
P
P
C
N
C
C
o
d
2
2
C
C
7
V
=
d
t i
=
=
e r
S
° 0
=
=
=
C
- 2
, e
C
C
C
C
o i
0
S
a
2
2
S
S
S
S
2
1
1
=
- 2
2 .
- 1
- 1
- 2
- 2
C
n
s
5 .
5 .
0
V
2
2
n i
0
=
s
V
=
=
=
=
V
V
V
V
~
5 .
g
0
0
0
0
0
7
, V
° 0
C
. 2
4
4
M
2
1
f 1
2
5
0
5 .
5 .
n i
5 .
0
C
H
1 -
1 -
T
0 -
0 -
1
5
8
1
6
8
5
1
1
y
7
5
0
8
0
5
5 .
7 .
www.DataSheet4U.com
5
8
0
7 .
7 .
1
0
p
0
0
0
0
A
V
C
M
2 -
3 -
5
www.semtech.com
5
0
5
C
2 -
2 -
7
5
0
SC2447
a
1
5
8
5 .
0
5 .
0
x
0
0
-
1
5 .
U
M
µ
k
k
m
m
m
d
µA
µA
µA
µA
µA
n
n
i n
%
%
V
V
H
H
V
V
V
H
A
A
B
V
A
A
s t
z
z
z
1

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