參數(shù)資料
型號: SC1403ITSTR
廠商: Semtech Corporation
英文描述: Mobile Multi-Output PWM Controller with Virtual Current SenseTM
中文描述: 移動多輸出PWM控制器虛擬電流SenseTM
文件頁數(shù): 8/30頁
文件大?。?/td> 567K
代理商: SC1403ITSTR
8
2002 Semtech Corp.
www.semtech.com
SC1403
PRELIMINARY
POWER MANAGEMENT
Pin Descriptions (Cont.)
2.5V
REF
V+
+3.3V
VL
VIN
VL
BST3
DH3
LX3
DL3
CSH3
CSL3
COMP3
REF
TIME/ON5
RUN/ON3
SEQ
RESET
COMP5
CSL5
CSH5
PGND
DL5
LX5
DH5
BST5
VL
SYNC
V+
PSAVE
5V
REG
EN
DELAY
CSL5
VL
LS
OSC
LS
HS
VL
50mV
7.5mV
2.5mV
3V
CTL
LOGIC
OC
PS
POL
50mV
7.5mV
2.5mV
OC
PS
POL
5V
CTL
LOGIC
PWM
MODULATOR
PWM
MODULATOR
OV FAULT
+10%
-25%
UV FAULT
3
VL
2
POWER-ON
SEQUENCE
LOGIC
0.5
2.0
SS
TIMER
BV
DELAY
+5V
VIN
FB5
0.6
FB3
0.6V
CURRENT
RAMP
V+
CSL3
CSL5
#
n
P
e
m
a
N
n
P
n
o
n
u
F
n
P
9
1
5
L
D
.
E
F
S
O
M
r
e
s
u
o
n
o
c
n
y
s
e
d
w
o
e
h
p
O
e
v
D
e
G
0
2
D
N
G
P
.
n
u
o
G
r
w
o
P
1
2
L
V
.
p
O
r
g
e
R
r
e
n
l
n
V
5
2
2
+
V
.
p
n
e
g
a
V
y
B
3
2
#
N
D
H
S
.
w
o
e
v
a
,
p
n
o
C
n
w
o
d
h
S
4
2
3
L
D
.
E
F
S
O
M
r
e
s
u
o
n
o
c
n
y
s
e
d
w
o
e
h
p
O
e
v
D
e
G
5
2
3
T
S
B
.
v
e
g
e
d
h
g
r
n
o
e
n
n
o
C
r
a
p
a
C
t
o
o
B
6
2
3
E
S
A
H
P
.
o
e
n
n
o
C
)
u
d
n
e
d
o
N
g
n
c
w
S
7
2
3
H
D
.
c
w
s
l
n
n
a
h
C
-
N
e
d
h
g
,
V
3
e
h
p
O
e
v
D
e
G
8
2
3
N
O
.
p
n
o
C
F
F
O
/
N
O
Note: All logic level inputs and outputs are open collector TTL compatible.
Block Diagram
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