sc1182 Semtech Corporation, sc1182 Datasheet - Page 6

• Manufacturer Part Number: sc1182
• Description: Programmable Synchronous Dc/dc Converter, Dual Low Dropout Regulator Controller - Semtech Corporation
• Manufacturer: Semtech Corporation

August 25, 1998
MATERIALS LIST
Qty. Reference
4
6
6
1
4
1
1
1
1
1
1
1
1
2
1
SETTING LDO OUTPUT VOLTAGE
VOUT LDO1 (LDO2)
3.45V
3.30V
3.10V
2.90V
2.80V
2.50V
1.50V
© 1998 SEMTECH CORP.
C1,C5,C13,
C18
C2,C3,C14-
C17
C9-C12,
C21, C22
L1
Q1,Q2,Q3,
Q4
R4
R5
R6
R1
R12
R13
R14
R15
R17, R18
U1
Part/Description
0.1µF Ceramic
1500µF/6.3V
330µF/6.3V
4µH
See notes
5m
2.32k , 1%, 1/8W
1k , 1%, 1/8W
10 , 5%, 1/8W
1%, 1/8W
1%, 1/8W
1%, 1/8W
1%, 1/8W
100K, 5%, 1/8W
SC1182/3CSW
R
R12 (R14)
105
105
102
100
100
100
100
B
R
R13 (R15)
182
169
147
130
121
97.6
18.7
Vendor
Various
SANYO
Various
See notes
IRC
Various
Various
Various
Various
Various
Various
Various
Various
SEMTECH
A
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
Notes
MV-GX or equiv. Low ESR
8 Turns 16AWG on MICROMETALS T50-52D core
FET selection requires trade-off between efficiency and
cost. Absolute maximum R
OAR-1 Series
See Table Below (Not required for SC1182)
See Table Below (Not required for SC1182)
See Table Below (Not required for SC1182)
See Table Below (Not required for SC1182)
I
R
R
R
See
significan
V
Where
that
FB
652 MITCHELL ROAD NEWBURY PARK CA 91320
OUT
B
A
A
and
layout
the
Feedback
Bottom
Top
. 1
:
R
I (
265
B
FB
t
feedback
error
must
diagram
R
feedback
R
R (
A
pin
)
B
be
A
term
bias
low
resistor
for
R
DS(ON)
B
does
resistor
)
clarificat
enough
current
= 22 m for Q1,Q2
I (
not
FB
R
cause
ion
so
A
)
SC1182/3
6