LOW NOISE 150mA LDO REGULATOR
544441#6(5,(6
OUTLINE
7KH#544441#6HULHV#DUH#YROWDJH#UHJXODWRU#,&V#ZLWK#KLJK#RXWSXW#YROWDJH#DFFXUDF\/#H[WUHPHO\#ORZ#VXSSO\#FXUUHQW/#ORZ
210UHVLVWDQFH/#DQG#KLJK#5LSSOH#5HMHFWLRQ#E\#&026#SURFHVV1#(DFK#RI#WKHVH#YROWDJH#UHJXODWRU#,&V#FRQVLVWV#RI#D#YROWDJH
UHIHUHQFH#XQLW/#DQ#HUURU#DPSOLILHU/#UHVLVWRUV/#D#FXUUHQW#OLPLW#FLUFXLW/#DQG#D#FKLS#HQDEOH#FLUFXLW1
7KHVH#,&V#SHUIRUP#ZLWK#ORZ#GURSRXW#YROWDJH#DQG#D#FKLS#HQDEOH#IXQFWLRQ1#7KH#OLQH#WUDQVLHQW#UHVSRQVH#DQG#ORDG#WUDQ0
VLHQW#UHVSRQVH#RI#WKH#544441#6HULHV#DUH#H[FHOOHQW/#WKXV#WKHVH#,&V#DUH#YHU\#VXLWDEOH#IRU#WKH#SRZHU#VXSSO\#IRU#KDQG0KHOG
FRPPXQLFDWLRQ#HTXLSPHQW1
7KH#RXWSXW#YROWDJH#RI#WKHVH#,&V#LV#IL[HG#ZLWK#KLJK#DFFXUDF\1#6LQFH#WKH#SDFNDJH#IRU#WKHVH#,&V#DUH#62705608#+0LQL0
PROG,#SDFNDJH#/#KLJK#GHQVLW\#PRXQWLQJ#RI#WKH#,&V#RQ#ERDUGV#LV#SRVVLEOH1
FEATURES
•
8OWUD0/RZ#6XSSO\#&XUUHQW
11111111111111111111111111111111111111111111111111
7<3
1#68µ$
•
6WDQGE\#0RGH
1111111111111111111111111111111111111111111111111111111111111111111111
7<3
1#314µ$
•
/RZ#'URSRXW#9ROWDJH
1111111111111111111111111111111111111111111111111111111111
7<3
1#3159+,
287
433P$,
•
+LJK#5LSSOH#5HMHFWLRQ
111111111111111111111111111111111111111111111111111111111
7<3
1#:3G%+I 4N+],
•
/RZ#7HPSHUDWXUH0'ULIW#&RHIILFLHQW#RI#2XWSXW#9ROWDJH111111 7<3
1#“433SSP2°&
•
([FHOOHQW#/LQH#5HJXODWLRQ111111111111111111111111111111111111111111111111111 7<3
1#3138(29
•
+LJK#2XWSXW#9ROWDJH#$FFXUDF\
1111111111111111111111111111111111111111111
“513(
•
([FHOOHQW#/LQH#7UDQVLHQW#5HVSRQVH#DQG#/RDG#7UDQVLHQW#5HVSRQVH
•
6PDOO#3DFNDJH#
111111111111111111111111111111111111111111111111111111111111111111111
62705608+0LQL0PROG,
•
2XWSXW#9ROWDJH111111111111111111111111111111111111111111111111111111111111111111111 6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#4189#WR
8139#LV#SRVVLEOH
•
%XLOW0LQ#FKLS#HQDEOH#FLUFXLW##+#5#W\SHV>#$=#DFWLYH#´/
µ/#%=#DFWLYH#´+µ,
•
3LQRXW11111111111111111111111111111111111111111111111111111111111111111111111111111111111 6LPLODU#WR#WKH#/35<;3
APPLICATIONS
•
3RZHU#VRXUFH#IRU#FHOOXODU#SKRQHV#VXFK#DV#*60/&'0$#DQG#YDULRXV#NLQG#RI#3&6V1
•
3RZHU#VRXUFH#IRU#HOHFWULFDO#DSSOLDQFHV#VXFK#DV#FDPHUDV/#9&5V#DQG#FDPFRUGHUV1
•
3RZHU#VRXUFH#IRU#EDWWHU\0SRZHUHG#HTXLSPHQW1
1
R1111N
BLOCK DIAGRAM
R1111NXX1A
R1111NXX1B
1
V
DD
5
V
OUT
1
V
DD
5
V
OUT
Vref
CE
3
Current Limit
GND
2
CE
3
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#UHTXHVW1#7KH#VHOHFWLRQ#FDQ#EH#PDGH#E\#GHVLJQDWLQJ#WKH#SDUW#QXPEHU#DV#VKRZQ#EHORZ#=
54444;;;4;0;;
↑ ↑ ↑ ↑
D E F G
Code
D
E
'HVLJQDWLRQ#RI#3DFNDJH#7\SH#=
1=62705608#+0LQL0PROG,
6HWWLQJ#2XWSXW#9ROWDJH#+9
287
,#=
6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#4189#WR#8139#LV#SRVVLEOH1
'HVLJQDWLRQ#RI#$FWLYH#7\SH#=
F
$#=´/µ#DFWLYH#W\SH
%#=´+µ#DFWLYH#W\SH
G
'HVLJQDWLRQ#RI#7DSLQJ#7\SH#=
([1#75/#7/#+UHIHU#WR#7DSLQJ#6SHFLILFDWLRQV#>75#W\SH#LV#WKH#VWDQGDUG#GLUHFWLRQ1,
Contents
←3DUW#1XPEHU
2
R1111N
ELECTRICAL CHARACTERISTICS
•
R1111NXX1A
Symbol
9
287
,
287
∆9
287
2∆,
287
9
',)
,
66
,VWDQGE\
∆9
287
2∆9
,1
55
9
,1
∆9
287
2∆7
,OLP
5
38
9
&(+
9
&(/
HQ
Item
2XWSXW#9ROWDJH
2XWSXW#&XUUHQW
/RDG#5HJXODWLRQ
'URSRXW#9ROWDJH
6XSSO\#&XUUHQW
6XSSO\#&XUUHQW#+6WDQGE\,
/LQH#5HJXODWLRQ
5LSSOH#5HMHFWLRQ
,QSXW#9ROWDJH
2XWSXW#9ROWDJH
7HPSHUDWXUH#&RHIILFLHQW
6KRUW#&XUUHQW#/LPLW
&(
#3XOO0XS#5HVLVWDQFH
&(
#,QSXW#9ROWDJH#´+µ
µ
&(
#,QSXW#9ROWDJH#´/
2XWSXW#1RLVH
%:#
#43+]#∼#433N+]
,
287
# #63P$
073°&#≤#7RSW#≤#;8°&
9
287
# #39
518
418
3
63
“433
83
8
43
9
,1
3158
Conditions
9
,1
# #6HW#9
287
.49
4P$#≤#,
287
#≤#63P$
92/7$*(
9
,1
# #6HW#9
287
.49
4P$#≤#,
287
#≤#;3P$
92/7$*(
9
,1
# #6HW#9
287
.49
9
,1
# #9
&(
# #6HW#9
287
.49
6HW#9
287
.3189#≤#9
,1
#≤#;9
,
287
# #63P$
I#
#4N+]/#5LSSOH#3189S0S
9
,1
# #6HW#9
287
.49
68
314
3138
:3
;
:3
413
3153
µ$
µ$
(29
G%
9
SSP
2°&
P$
0Ω
9
9
µ9UPV
45
73
P9
MIN.
9
287
×31<;
TYP.
9
287
×4135
7RSW
58°&
MAX.
Unit
9
5HIHU#WR#WKH#(/(&75,&$/#&+$5$&7(5,67,&6#E\#287387
5HIHU#WR#WKH#(/(&75,&$/#&+$5$&7(5,67,&6#E\#287387
4