參數(shù)資料
型號: SCI7633M
廠商: 愛普生(中國)有限公司
英文描述: Step-up Switching Regulator(步升開關(guān)穩(wěn)壓器)
中文描述: 升壓型開關(guān)穩(wěn)壓器(步升開關(guān)穩(wěn)壓器)
文件頁數(shù): 3/7頁
文件大?。?/td> 66K
代理商: SCI7633M
SCI7630M Series
3
PIN DESCRIPTION
Pin Name
V
I1
V
I2
V
O
V
SW
PS
PWCR
*
1.
Function
Power supply for booster (positive)
Power Supply for back-up (positive)
Output voltage
Terminal for connection of inductor for booster
Power save control
Power on clear
*
1
*
2
*
3
Pin Name
RST
C
OUT
C
IN
CL
O
GND
V
CONT
Function
Reset signal output (voltage detection)
Crystal oscillator terminal (Drain)
Crystal oscillator terminal (Gate)
Clock pulse output
Power supply (GND)
Comparator input terminal
Stand-by
mode
and
back-up
function
(back-up
function
is
available
to
SCI7631M).
The
device
can
be
set
into
stand-by
mode
by
connecting
the
PS
pin
to
GND
level.
In
the
stand-by
mode,
the
on-chip
back-up
switch
turns
on
and
the
input
voltage
connected
to
the
V
I2
pin
is
output
to
the
V
O
pin
with
the
boosting
operation
at
rest.
The
PS
pin
is
internally
pulled
up,
and
must
be
held
open
when
its
control
is
unnecessary.
(Connecting
the
voltage
detection
output
to
the
PS
pin
validates
the
back-up
function.)
Power
on
clear
function
(SCI7631M,
SCI7638M)
(voltage
detection
function)
See
the
SCI7631M
example
of
application.
For
a
system
with
an
external
resistor
R
1
and
capacitor
C
1
connected
to
the
PWCR
pin
and
a
pull-up
resistor
to
the
RST
pin,
a
reset
pulse
whose
width
can
flexibly
be
selected
by
R
1
and
C
1
is
obtained
after
acquisition
of
normal
output
by
boosting
operation.
This
enables
the
system
(for
example,
a
microcomputer),
connected
to
the
RST
pin,
to
be
correctly
reset.
With
the
PWCR
pin
connected
to
the
V
O
pin,
the
RST
pin
stays
open
when
V
I1
exceeds
the
detection
voltage,
and
develops
a
GND
level
output
when
V
I1
is
smaller
than
the
detection
voltage.
The
ripple
voltage
generated
on
the
boost
output
voltage
can
be
reduced
by
connecting
response
compensation
capacitor
betweeen
the
comparator
input
terminals
V
CONT
and
the
V
O
.
(SCI7638M)
*
2.
*
3.
ABSOLUTE MAXIMUM RATINGS
V
I1
I
O
V
O
P
d
T
opr
T
stg
T
sol
input voltage
Output current
Output voltage
Power dissipation
Operating temperature
Storage temperature
Soldering temperature and time
V
mA
V
mW
C
C
7
100
7
200 (SOP3-8pin)
-30 to 85
-65 to 150
260C, 10s (at lead)
Rating
Symbol
Unit
(GND=0V, Ta=25C)
Value
Note: When
SOP
3-8pin
is
soldered
in
the
solder-reflow
process,
be
sure
to
maintain
the
reflow
furnace
temperature
at
the
curve
shown
in
"Fig.
3-5 Tempeature profile for standard SMD package (QFP, SOP, PLCC and etc.)"
of
DATA
BOOK.
And
SOP3-8pin
can
not
be
exposed
to
high
temperature
of
the
solder
dipping.
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