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參數(shù)資料
| 型號(hào)： | SP6639 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Adjustable, High Efficiency, Low I Q , Step-Down DC-DC Converter(5V或可調(diào)電壓，高效，低I Q，步降DC-DC變換器) |
| 中文描述： | 可調(diào)，高效率，低智商，降壓型DC - DC轉(zhuǎn)換器（5V的或可調(diào)電壓，高效，低智商，步降型DC - DC變換器） |
| 文件頁(yè)數(shù)： | 3/13頁(yè) |
| 文件大?。?/td> | 82K |
| 代理商： | SP6639 |
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3
Rev. 2/23/01 SP6639/40/53 5/ 3.3/ 3V, Adj High Efficiency, Low I
Q
Step-Down DC-DC Converter Copyright 2001 Sipex Corporation
P
Note 1
:
Peak Inductor current must be limited to 600mA by using an inductor of 100
μ
H or greater.
Note 2: Output guaranteed by correlation to measurements of device parameters (i.e. switch on-resistance, on-times, off-times,
and output voltage trip points).
Note 3: K
= t
* (V+ -V
). For the SP6639 V+ = 6V to 7.5V, V
out
= 3V to 5V; for the SP6640 V+ = 4V to 7.5V, V
out
= 3.3V;
for the SP6653 V+ = 4V to 7.5V, V
= 3V.
Note 4: K
= T
* V
For the SP6639 V+ = 6V to 7.5V, V
out
= 3V to 5V; for the SP6640 V+ = 4V to 7.5V, V
out
= 3.3V;
for the SP6653 V+ = 4V to 7.5V, V
out
= 3V.
(V+ = 6V for the SP6639, V+ = 5V for the SP6640/6653, I
LOAD
= 0mA, T
A
= T
MIN
to T
MAX,
typical values are at T
A
=
25
°
C,
circuit of figure 3 unless otherwise noted.)
SPECIFICATIONS (continued)
R
E
T
E
M
A
R
A
P
S
N
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I
D
N
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.
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c
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-
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T
,
6
+
V
A
5
2
+
=
O
3
5
4
3
6
6
P
S
,
C
8
5
T
,
6
+
V
A
T
=
N
I
M
T
o
X
A
M
9
3
6
6
P
S
,
5
T
,
4
+
V
A
T
=
N
I
M
T
o
X
A
M
3
5
4
6
6
P
S
,
8
e
g
a
k
a
e
L
h
c
S
X
L
V
,
5
=
+
V
X
L
V
0
=
T
A
5
2
+
=
O
C
3
0
0
0
μ
A
T
A
T
=
N
I
M
T
o
X
A
M
0
3
t
e
C
s
a
B
F
V
V
2
=
B
F
V
0
0
1
A
n
t
P
p
e
d
o
M
-
u
D
B
F
V
0
5
V
m
d
h
s
e
T
B
F
V
6
2
8
2
0
3
V
t
e
C
s
a
I
L
V
I
L
V
2
=
2
0
1
A
n
d
h
s
e
T
I
L
6
2
8
2
0
3
V
t
e
C
k
n
O
B
L
V
O
B
L
V
4
=
9
3
6
6
P
S
8
5
A
m
3
5
6
6
P
S
4
6
6
P
S
4
2
t
e
C
e
g
a
k
a
e
L
O
B
L
V
5
=
O
B
L
V
1
0
0
1
μ
A
y
a
D
O
B
L
e
v
v
o
V
m
0
5
5
2
μ
s
d
h
s
e
T
N
D
H
S
0
8
5
1
0
0
V
t
e
C
p
U
-
P
N
D
H
S
V
0
=
N
D
H
S
0
1
0
2
0
4
μ
A
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| SP6640 | Adjustable, High Efficiency, Low I Q , Step-Down DC-DC Converter(3.3V或可調(diào)電壓，高效，低I Q，步降DC-DC變換器) |
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