LOW NOISE 150mA LDO REGULATOR
51 6(5,(6
NO. EA-058-0204
OUTLINE
7KH 51 6HULHV DUH &026EDVHG YROWDJH UHJXODWRU ,&V ZLWK KLJK RXWSXW YROWDJH DFFXUDF\ H[WUHPHO\ ORZ VXS
SO\ FXUUHQW ORZ 21UHVLVWDQFH DQG KLJK ULSSOH UHMHFWLRQ (DFK RI WKHVH YROWDJH UHJXODWRU ,&V FRQVLVWV RI D YROWDJH UHI
HUHQFH XQLW DQ HUURU DPSOLILHU UHVLVWRUV 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 WUDQVLHQW UHVSRQVH RI WKH 51 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 IL[HG ZLWK KLJK DFFXUDF\
6LQFH WKH SDFNDJH IRU WKHVH ,&V LV 627 0LQLPROG SDFNDJH KLJK GHQVLW\ PRXQWLQJ RI WKH ,&V RQ ERDUGV LV
SRVVLEOH
FEATURES
•
8OWUD/RZ 6XSSO\ &XUUHQW 7\S µ$
•
6WDQGE\ 0RGH 7\S µ$
•
/RZ 'URSRXW 9ROWDJH 7\S 9 ,
287
•
+LJK 5LSSOH 5HMHFWLRQ 7\S GE I
•
([FHOOHQW /LQH 5HJXODWLRQ 7\S 9
•
+LJK $FFXUDF\ 2XWSXW 9ROWDJH
±
•
6PDOO 3DFNDJH 627 0LQLPROG
•
2XWSXW 9ROWDJH 6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9 WR
9 LV SRVVLEOH
•
%XLOWLQ &KLS (QDEOH &LUFXLW 7\SHV $ DFWLYH ´/ % DFWLYH ´+µ
µ
•
3LQ RXW 6LPLODU WR WKH 7. 7.
•
/RZ 7HPSHUDWXUH'ULIW &RHIILFLHQW RI 2XWSXW 9ROWDJH 7\S
±SSP°&
P$
N+]
APPLICATIONS
•
3RZHU VRXUFH IRU FHOOXODU SKRQHV VXFK DV *60 &'0$ DQG YDULRXV NLQG RI 3&6V
•
3RZHU VRXUFH IRU GRPHVWLF DSSOLDQFHV VXFK DV FDPHUDV 9&5V DQG FDPFRUGHUV
•
3RZHU VRXUFH IRU EDWWHU\SRZHUHG HTXLSPHQW
1
R1121N
BLOCK DIAGRAM
R1121Nxx1A
R1121Nxx1B
3
V
DD
1
V
OUT
3
V
DD
1
V
OUT
Vref
CE
4
Current Limit
GND
2
CE
4
Vref
Current Limit
GND
2
SELECTION GUIDE
7KH RXWSXW YROWDJH WKH DFWLYH W\SH WKH SDFNLQJ W\SH DQG WKH WDSLQJ W\SH IRU WKH ,&V FDQ EH VHOHFWHG DW WKH
XVHU V UHTXHVW
7KH VHOHFWLRQ FDQ EH PDGH E\ GHVLJQDWLQJ WKH SDUW QXPEHU DV VKRZQ EHORZ
5[[[[[[
↑ ↑ ↑
D E F
Code
D
6HWWLQJ 2XWSXW 9ROWDJH 9
287
6WHSZLVH VHWWLQJ ZLWK D VWHS RI 9 LQ WKH UDQJH RI 9 WR 9 LV SRVVLEOH
'HVLJQDWLRQ RI $FWLYH 7\SH
E
$ DFWLYH ´/ W\SH
µ
% DFWLYH ´+µ W\SH
F
'HVLJQDWLRQ RI 7DSLQJ 7\SH
([ 75 7/ UHIHU WR 7DSLQJ 6SHFLILFDWLRQV 75 W\SH LV WKH VWDQGDUG GLUHFWLRQ
Contents
←3DUW
1XPEHU
2
R1121N
PIN CONFIGURATION
SOT-23-5
5
4
NC
(mark side)
V
OUT
GND
CE
V
DD
1
2
3
PIN DESCRIPTION
Pin No.
Symbol
9
287
*1'
9
''
RU &(
Description
2XWSXW SLQ
*URXQG 3LQ
,QSXW 3LQ
&KLS (QDEOH 3LQ
1R &RQQHFWLRQ
1&
ABSOLUTE MAXIMUM RATINGS
Symbol
9
,1
9
&(
9
287
,
287
3
'
7RSW
7VWJ
Item
,QSXW 9ROWDJH
,QSXW 9ROWDJH &( RU &( 3LQ
2XWSXW 9ROWDJH
2XWSXW &XUUHQW
3RZHU 'LVVLSDWLRQ
2SHUDWLQJ 7HPSHUDWXUH
5DQJH
6WRUDJH 7HPSHUDWXUH 5DQJH
Rating
a 9
,1
a 9
,1
a
a
Unit
9
9
9
P$
P:
°&
°&
3
R1121N
ELECTRICAL CHARACTERISTICS
•
R1121Nxx1A
Symbol
9
287
,
287
∆9
287
∆,
287
9
',)
,
66
,VWDQGE\
∆9
287
∆9
,1
55
9
,1
∆9
287
∆7
,OLP
5
38
9
&(+
9
&(/
HQ
Item
2XWSXW 9ROWDJH
2XWSXW &XUUHQW
/RDG 5HJXODWLRQ
'URSRXW 9ROWDJH
6XSSO\ &XUUHQW
6XSSO\ &XUUHQW 6WDQGE\
/LQH 5HJXODWLRQ
5LSSOH 5HMHFWLRQ
,QSXW 9ROWDJH
2XWSXW 9ROWDJH
7HPSHUDWXUH &RHIILFLHQW
6KRUW &XUUHQW /LPLW
CE
3XOOXS 5HVLVWDQFH
CE
,QSXW 9ROWDJH ´+µ
7RSW
Conditions
9
,1
6HW 9
287
9
P$
≤
,
287
≤
P$
92/7$*(
9
,1
6HW 9
287
9
P$
≤
,
287
≤
P$
92/7$*(
9
,1
9
,1
,
287
I
9
,1
6HW 9
287
9
9
&(
P$
N+] 5LSSOH 9SS
6HW 9
287
9
,
287
9
287
P$
9
%:
+] a N+]
°&
≤
7RSW
≤
°&
±
9
,1
6HW 9
287
9
Min.
9
287
×
Typ.
Max.
9
287
×
°&
Unit
9
UHIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
P9
UHIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
µ$
µ$
9
G%
9
SSP
°&
P$
0Ω
9
9
µ9UPV
6HW 9
287
9
≤
9
,1
≤
9
µ
CE
,QSXW 9ROWDJH ´/
2XWSXW 1RLVH
4
R1121N
•
R1121Nxx1B
Symbol
9
287
,
287
∆9
287
∆,
287
9
',)
,
66
,VWDQGE\
∆9
287
∆9
,1
55
9
,1
∆9
287
∆7
,OLP
5
3'
9
&(+
9
&(/
HQ
Item
2XWSXW 9ROWDJH
2XWSXW &XUUHQW
/RDG 5HJXODWLRQ
'URSRXW 9ROWDJH
6XSSO\ &XUUHQW
6XSSO\ &XUUHQW 6WDQGE\
/LQH 5HJXODWLRQ
5LSSOH 5HMHFWLRQ
,QSXW 9ROWDJH
2XWSXW 9ROWDJH
7HPSHUDWXUH &RHIILFLHQW
6KRUW &XUUHQW /LPLW
&( 3XOOGRZQ 5HVLVWDQFH
&( ,QSXW 9ROWDJH ´+µ
&( ,QSXW 9ROWDJH ´/
µ
2XWSXW 1RLVH
%:
+] a N+]
,
287
9
287
P$
9
°&
≤
7RSW
≤
°&
9
,1
Conditions
6HW 9
287
9
P$
≤
,
287
≤
P$
92/7$*(
9
,1
6HW 9
287
9
P$
≤
,
287
≤
P$
92/7$*(
9
,1
9
,1
9
&(
,
287
I
9
,1
6HW 9
287
9
6HW 9
287
9
*1'
P$
N+] 5LSSOH 9SS
6HW 9
287
9
±
9
,1
Min.
9
287
×
Typ.
Max.
9
287
7RSW °&
Unit
9
×
UHIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
P9
UHIHU WR WKH (/(&75,&$/ &+$5$&7(5,67,&6 E\ 287387
µ$
µ$
9
G%
9
SSP
°&
P$
0Ω
9
9
µ9UPV
6HW 9
287
9
≤
9
,1
≤
9
5
