sc1470 Semtech Corporation, sc1470 Datasheet - Page 3

• Manufacturer Part Number: sc1470
• Description: Synchronous Buck Pseudo Fixed Frequency Power Supply Controller
• Manufacturer: Semtech Corporation

Test Conditions: V
POWER MANAGEMENT
Electrical Characteristics (Cont.)
P
C
E
F (
O
O
M
V
F
O
L I
C
P
F
C
C
O
O
O
P
P
P
Z
2005 Semtech Corp.
B
e
a
a
r r
O
S
G
G
G
o
u
n
v
M I
r u
r u
r u
u
u
v
i n i
B
o r
u
r e
a r
p t
i T -
p t
p t
r o
r e
t n
A
U
D
D
D
e r
e r
e r
n I
m
t l
T
V
t u
i S
C -
t u
t u
V -
T
m
C -
o r
m
p
u
C
t n
t n
t n
L
L
U
u
P
E
t u
n r
n I
k n
o
o
e
t e
V
U
O
, e
m
o r
V
o
l l
r u
o r
C
i L
i L
a t l
w
a
p
o -
o
m
n
r e
v
r e
B
s s
k
T
V
O
t u
o
a t l
e r
C
m
m
d
r e
e t
g
p
n
a i
O
a
h
m
r e
B
f f
n i
r u
t i
t i
e
r a
V -
t n
t c
g
e r
g
R
A
u
T
s
p
T
g
V -
i T
e
e
e r
p t
BAT
P (
N (
h
e
F
t a
o i
o
s
r a
C
=
e r
S
m
s
T
a
h
o
a t l
t u
C
R
t n
r o
r u
o
e
= 15V, EN/PSV = 5V, VCCA = VDDP = 5V, V
n
s i
t a
o
2
e
h
t l u
a t l
s
e
a
r u
i s
g
e r
g
V
d l
5 .
e r
n
a t
h
r o
n
T
a
e r
v i t
g
e
l o
o
s
D
g
h
V
c n
s
v i t
t n
e
a t l
n i
e
O
e r
) d
h
F
t n
) e
e
) e
e
o
F
a
a l
g
s f f
g
s
(
d l
) 1
a
t l u
(
h
y
e
) 2
t e
t l u
o
d l
C
V
R
R
D
P
P (
P (
P (
P (
P (
F
i S
F
W
W
W
B
B
C
T
T
G
o
L
k n
O
O
G
G
G
G
G
i
i
i
h t
h t
h t
n
C
N
N
N
H
o f
n i
N
N
N
N
N
d
=
=
D
A
1
g i
e r
e r
e r
D
D
D
D
D
c r
t i
e r
m
1
5
h
o i
=
-
L -
L -
L -
L -
s
s
s
e
-
g
M
0
A
p
p
p
L I
d
4
n
L
X
X
X
) X
u
0
e
e
e
M I
5 .
t a l
X
a
s
k
, )
, )
, )
t c
t c
t c
b
, )
V
R
R
R
o i
o
o t
o t
o t
L I
L I
L I
e v
o t
, n
E
M I
M I
M I
n i
n i
n i
N
5
P
=
=
=
O
e t
e t
e t
P /
5 .
G
V
5
1
2
n r
n r
n r
OUT
S
V
D
k
0
0
l a
l a
l a
h t
V
k
k
= 1.25V, R
=
e r
e r
e r
e r
=
5
s
e f
e f
e f
5
V
h
V
3
o
e r
e r
e r
d l
c n
c n
c n
TON
e
e
e
= 1M
M
n i
0
2
1
1 -
T
4
9
5
1
2
+
3 -
1 -
5 .
° 5
1
5
7
y
3
0
0
5
0
1
5
0
4
0
0
6
0
0
0
p
6
0
0
0
0
0
C
0
1
0
M
a
x
4 -
1
2 -
1 -
M
7
1 -
1
4 -
1 -
0
° 0
4
3
8
+
5 -
9
9
7
0
5 .
n i
%
9
0 .
5
5
8
0
2
6
5
C
0
7
o t
www.semtech.com
SC1470
V
1
2
1
1 -
M
+
+
5
2
+
2
1
C
2 -
0
0
0
6
8 -
1
1
1
5
5
1
2
1
° 5
a
0
1
4 .
C
2
7
5
1
%
0 .
5
0
5
5
2
x
0
5
6
C
A
U
m
m
m
m
m
m
k
µ
µ
µ
i n
s n
s n
s n
µ
%
%
%
V
V
V
A
A
A
V
V
V
V
V
V
s
s t