SC4905B Semtech Corporation, SC4905B Datasheet - Page 3

• Manufacturer Part Number: SC4905B
• Description: Sc4905b High-performance Voltage-mode Pwm Controller | Semtech
• Manufacturer: Semtech Corporation

Unless otherwise specified, V
Note 1: Guaranteed by design. Not 100% tested in production.
POWER MANAGEMENT
Electrical Characteristics (Cont.)
P
S
S
C
n I
C
P
V
V
S
H
S
H
P
F
M
M
P
P
O
V
V
V
2006 Semtech Corp.
B
O
O
R
F
a
y
y
p
o r
R
R
a t
s y
a t
s y
u
W
o r
r u
r u
R
D
D
u
i n i
a
c n
a r
n
t u
s l
l l a
E
E
i x
p t
s i
u
u
E
D
t r
D
t r
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p
p
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e t
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M
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m
c
p t
p t
F
F
m
a
e
a
e
m
F
B
p
t u
T
T
C /
F
t n
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e r
U
U
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u
t n
g
g
G
t u
t u
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u
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h
a i
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B (
W
i T
t e
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m
t a
t a
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V
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e r
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m
h
h
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n
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u
t i
(
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A
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) 1
s r
s r
o
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r u
(
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n
) 1
S
S
t i
D
D
y t
T
T
T
d l
d l
M
y c
o i
o i
t n
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n
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H
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t c
t c
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t n
e
c y
o
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d
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o
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t c
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w
s
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h
n
h
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n
n
P
o
) . t
t a
(
W
d l
M I
) 1
n
A (
B (
r o
DD
M
o t
= 12V, V
v
v
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e
e
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e
s r
s r
t c
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U
o i
o i
T
o i
U
IN
) n
) n
T
(
n
) 1
= 48V, R
(
) 1
OSC
V
= 499k, C
D
M
T
5
V
A
e
X
0
V
F
C
C
t s
m
B
=
I
I
F
O
O
V
O
O
B
0
0
=
V
U
U
C
V
U
U
OSC
F
T
T
<
T
T
0
F
-
-
F
o
O
=
=
=
=
F
V
5
5
5
=
= 220pF, R
n
,
e v
m
m
0
1
1
2
2
d
o t
V
3
0
m
m
0
0
A
A
t i
d r
6 .
F
m
p
p
A
A
o i
B
r V
i r
F
F
V
=
3
n
e v
f e
s
r V
T
= 280k, R
f e
M
V
= 2k, R
R
E
3 -
3 -
M
1
4
1
F
0
7
1 .
n i
%
%
1
0
B
-
= 8.25k, C
0
5 .
1
VDD
2 .
2
T
1
2
2
4
3
3
9
7
1
1
1
7
= 0.1uF, Ta = Tj = -40 to 105 °C.
y
0
4
5
0
F *
4 .
6 .
5
5
5
0
0
6 .
5 .
p
0
0
O
S
C
SC4905A/B
M
+
+
2
3
5
4
1
2 -
3
3
3
0
4
0
0
a
6 .
1
2
%
%
0
0
0
x
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U
%
m
m
m
H
µ
u
s n
s n
s n
s n
%
%
V
V
V
V
V
V
n
A
A
V /
z
V
V
V
t i