參數(shù)資料
型號(hào): SC1164CSW
廠商: Semtech Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 無(wú)電容,NMOS管,150mA的低壓差穩(wěn)壓器的反向電流保護(hù)
文件頁(yè)數(shù): 6/12頁(yè)
文件大小: 130K
代理商: SC1164CSW
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
1999 SEMTECH CORP.
October 25, 1999
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1164/5
6
MATERIALS LIST
Qty. Reference
Part/Description
Vendor
Notes
4
C1,C5,C13,C
18
0.1μF Ceramic
Various
6
C2,C3,C14-
C17
1500μF/6.3V
SANYO
MV-GX or equiv. Low ESR
6
C9-C12,
C21, C22
330μF/6.3V
Various
1
L1
4μH
8 Turns 16AWG on MICROMETALS T50-52D core
4
Q1,Q2,Q3,
Q4
See notes
See notes
FET selection requires trade-off between efficiency and
cost. Absolute maximum R
DS(ON)
= 22 m
for Q1,Q2
1
R4
5m
IRC
OAR-1 Series
1
R5
2.32k
, 1%, 1/8W
Various
1
R6
1k
, 1%, 1/8W
Various
1
R1
10
, 5%, 1/8W
Various
1
R12
1%, 1/8W
Various
See Table Below (Not required for SC1164)
1
R13
1%, 1/8W
Various
See Table Below (Not required for SC1164)
1
R14
1%, 1/8W
Various
See Table Below (Not required for SC1164)
1
R15
1%, 1/8W
Various
See Table Below (Not required for SC1164)
2
R17,R18
100k
, 5%,1/8W
Various
Required if Voltage is applied to the linear FET(s) without
12V applied to SC1164/5
1
U1
SC1164/5CSW
SEMTECH
SETTING LDO OUTPUT VOLTAGE
error
significan
cause
not
does
term
R
I
the
that
so
enough
low
be
must
R
and
R
ion
clarificat
for
diagram
layout
See
resistor
feedback
Bottom
=
R
resistor
feedback
Top
=
R
current
bias
pin
Feedback
I
:
Where
=
)
R
I
R
)
R
R
(
265
.
V
A
FB
B
A
B
A
FB
A
FB
B
B
A
OUT
+
+
=
R
B
R
A
VOUT LDO1 (LDO2)
R12 (R14)
R13 (R15)
3.45V
105
182
3.30V
105
169
3.10V
102
147
2.90V
100
130
2.80V
100
121
2.50V
100
97.6
1.50V
100
18.7
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