ChipFind - документация

Электронный компонент:

Скачать:  PDF   ZIP
SC82 120mA LDO REGULATOR
54 6(5,(6
1
NO. EA-074-0204
OUTLINE
7KH 54 6HULHV DUH &026EDVHG YROWDJH UHJXODWRU ,&V ZLWK KLJK RXWSXW YROWDJH DFFXUDF\ ORZ VXSSO\ FXUUHQW
ORZ 21UHVLVWDQFH DQG KLJK ULSSOH UHMHFWLRQ (DFK RI WKHVH YROWDJH UHJXODWRU ,&V FRQVLVWV RI D YROWDJH UHIHUHQFH XQLW
DQ HUURU DPSOLILHU UHVLVWRUV IRU VHWWLQJ 2XWSXW 9ROWDJH D FXUUHQW OLPLW FLUFXLW DQG D FKLS HQDEOH FLUFXLW
7KHVH ,&V SHUIRUP ZLWK ORZ GURSRXW YROWDJH DQG D FKLS HQDEOH IXQFWLRQ 7KH OLQH WUDQVLHQW UHVSRQVH DQG ORDG WUDQ
VLHQW UHVSRQVH RI WKH 54 6HULHV DUH H[FHOOHQW WKXV WKHVH ,&V DUH YHU\ VXLWDEOH IRU WKH SRZHU VXSSO\ IRU KDQGKHOG
FRPPXQLFDWLRQ HTXLSPHQW
7KH RXWSXW YROWDJH RI WKHVH ,&V LV LQWHUQDOO\ IL[HG ZLWK KLJK DFFXUDF\ 6LQFH WKH SDFNDJH IRU WKHVH ,&V LV 6&$%
6XSHU 0LQLPROG SDFNDJH KLJK GHQVLW\ PRXQWLQJ RI WKH ,&V RQ ERDUGV LV SRVVLEOH
FEATURES
8OWUD/RZ 6XSSO\ &XUUHQW 7\S $
6WDQGE\ 0RGH 7\S $
/RZ 'URSRXW 9ROWDJH 7\S 9 ,
287
P$ 2XWSXW 9ROWDJH 9 7\SH
+LJK 5LSSOH 5HMHFWLRQ 7\S G% I N+]
/RZ 7HPSHUDWXUH'ULIW &RHIILFLHQW RI 2XWSXW 9ROWDJH 7\S SSP&
([FHOOHQW /LQH 5HJXODWLRQ 7\S 9
+LJK 2XWSXW 9ROWDJH $FFXUDF\
([FHOOHQW '\QDPLF 5HVSRQVH
6PDOO 3DFNDJH 6&$% 6XSHU 0LQLPROG
2XWSXW 9ROWDJH 6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9
WR 9 LV SRVVLEOH
%XLOWLQ &KLS (QDEOH &LUFXLW %' DFWLYH KLJK
%XLOWLQ )ROGEDFN 3URWHFWLRQ &LUFXLW 7\S P$ &XUUHQW DW VKRUW PRGH
APPLICATIONS
3RZHU VRXUFH IRU FHOOXODU SKRQHV VXFK DV *60 &'0$ DQG YDULRXV NLQGV RI 3&6
3RZHU VRXUFH IRU HOHFWULFDO DSSOLDQFHV VXFK DV FDPHUDV 9&5V DQG FDPFRUGHUV
3RZHU VRXUFH IRU EDWWHU\SRZHUHG HTXLSPHQW
R1140Q
2
BLOCK DIAGRAMS
R1140Qxx1B
R1140Qxx1D
Vref
Current Limit
V
DD
4
1
2
3
V
OUT
GND
CE
Vref
Current Limit
V
DD
4
1
2
3
V
OUT
GND
CE
SELECTION GUIDE
7KH RXWSXW YROWDJH PDVN RSWLRQ DQG WKH WDSLQJ W\SH IRU WKH ,&V FDQ EH VHOHFWHG DW WKH XVHUV UHTXHVW 7KH VHOHF
WLRQ FDQ EH PDGH E\ GHVLJQDWLQJ WKH SDUW QXPEHU DV VKRZQ EHORZ
54[[[[[ 3DUW 1XPEHU
D E F G
Code
Contents
D
'HVLJQDWLRQ RI 3DFNDJH 7\SH
4 6&$% 6XSHU 0LQLPROG
E
6HWWLQJ 2XWSXW 9ROWDJH 9
287
6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9 WR 9 LV SRVVLEOH
F
'HVLJQDWLRQ RI 0DVN 2SWLRQ
% :LWKRXW DXWR GLVFKDUJH IXQFWLRQ DW 2)) VWDWH
' :LWK DXWR GLVFKDUJH IXQFWLRQ DW 2)) VWDWH
G
'HVLJQDWLRQ RI 7DSLQJ 7\SH
([ 75 7/ UHIHU WR 7DSLQJ 6SHFLILFDWLRQV 75 W\SH LV WKH VWDQGDUG GLUHFWLRQ
R1140Q
3
PIN CONFIGURATION
SC-82AB
4
3
Mark side
1
2
PIN DESCRIPTION
Pin No.
Symbol
Description
9
287
2XWSXW SLQ
*1'
*URXQG 3LQ
&(
&KLS (QDEOH 3LQ
9
''
,QSXW 3LQ
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
9
,1
,QSXW 9ROWDJH
9
9
&(
,QSXW 9ROWDJH &( 3LQ
9
,1
9
9
287
2XWSXW 9ROWDJH
9
,1
9
,
287
2XWSXW &XUUHQW
P$
3
'
3RZHU 'LVVLSDWLRQ
P:
7RSW
2SHUDWLQJ 7HPSHUDWXUH 5DQJH
&
7VWJ
6WRUDJH 7HPSHUDWXUH 5DQJH
&
R1140Q
4
ELECTRICAL CHARACTERISTICS
R1140Qxx1B/R1140Qxx1D
7RSW &
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
9
287
2XWSXW 9ROWDJH
9
,1
6HW 9
287
9
P$ ,
287
P$
9
287
9
287
9
,
287
2XWSXW &XUUHQW
9
,1
9
287
9
P$
9
287
,
287
/RDG 5HJXODWLRQ
9
,1
6HW 9
287
9
P$ ,
287
P$
P9
9
',)
'URSRXW 9ROWDJH
5HIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387 92/7
$*(
,
66
6XSSO\ &XUUHQW
9
,1
6HW 9
287
9
$
,VWDQGE\
6XSSO\ &XUUHQW 6WDQGE\
9
,1
9
&(
6HW 9
287
9
$
9
287
9
,1
/LQH 5HJXODWLRQ
6HW 9
287
9 9
,1
9
,
287
P$
,Q FDVH WKDW 9
287
9
9 9
,1
9
9
55
5LSSOH 5HMHFWLRQ
I N+] 5LSSOH 9SS
9
,1
6HW 9
287
9
,
287
P$
,Q FDVH WKDW 9
287
9 9
,1
9
287
9
G%
9
,1
,QSXW 9ROWDJH
9
9
287
7
2XWSXW 9ROWDJH
7HPSHUDWXUH &RHIILFLHQW
,
287
P$
& 7RSW &
SSP
&
,
/,0
6KRUW &XUUHQW /LPLW
9
287
9
P$
5
38
&( 3XOOXS 5HVLVWDQFH
0
9
&(+
&( ,QSXW 9ROWDJH +
9
,1
9
9
&(/
&( ,QSXW 9ROWDJH /
9
HQ
2XWSXW 1RLVH
%: +] WR N+]
9UPV
5
/2:
/RZ 2XWSXW 1FK 7U 21
5HVLVWDQFH RI ' YHUVLRQ
9
&(
9
R1140Q
5
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
7RSW &
Dropout Voltage
V
DIF
(V)
Output Voltage
V
OUT
(V)
Condition
Typ.
Max.
9
287
9
287
9
287
9
287
9
287
,
287
P$
TECHNICAL NOTES
:KHQ XVLQJ WKHVH ,&V FRQVLGHU WKH IROORZLQJ SRLQWV
3KDVH &RPSHQVDWLRQ
,Q WKHVH ,&V SKDVH FRPSHQVDWLRQ LV PDGH IRU VHFXULQJ VWDEOH RSHUDWLRQ HYHQ LI WKH ORDG FXUUHQW LV YDULHG )RU WKLV
SXUSRVH EH VXUH WR XVH D ) RU PRUH FDSDFLWRU &
287
ZLWK JRRG IUHTXHQF\ FKDUDFWHULVWLFV DQG (65 (TXLYDOHQW 6H
ULHV 5HVLVWDQFH
1RWH :KHQ WKH DGGLWLRQDO FHUDPLF FDSDFLWRUV DUH FRQQHFWHG WR WKH 2XWSXW 3LQ ZLWK 2XWSXW FDSDFLWRU IRU SKDVH FRP
SHQVDWLRQ WKH RSHUDWLRQ PLJKW EH XQVWDEOH %HFDXVH RI WKLV WHVW WKHVH ,&V ZLWK DV VDPH H[WHUQDO FRPSRQHQWV DV RQHV
WR EH XVHG RQ WKH 3&%
3&% /D\RXW
0DNH 9
''
DQG *1' OLQH VXIILFLHQW :KHQ WKH LPSHGDQFH RI WKHVH LV KLJK LW ZRXOG EH D FDXVH RI SLFNLQJ XS WKH QRLVH
RU XQVWDEOH RSHUDWLRQ &RQQHFW D FDSDFLWRU ZLWK DV PXFK DV ) FDSDFLWRU EHWZHHQ 9
''
DQG *1' SLQ DV FORVH DV SRV
VLEOH
6HW H[WHUQDO FRPSRQHQWV HVSHFLDOO\ RXWSXW FDSDFLWRU DV FORVH DV SRVVLEOH WR WKH ,&V DQG PDNH ZLULQJ VKRUWHVW