627
05608#3:0#6WHS0XS#'&2'&
&219(57(5
545431±±5±#6(5,(6
$33/,&$7,21#0$18$/
NO. EA-064-0006
SOT-23-5 PWM Step-up DC/DC CONVERTER
545431ðð5ð#6(5,(6
OUTLINE
7KH#545431;;5&2;;5'#6HULHV#DUH#3:0#VWHS0XS#'&2'&# &RQYHUWHU#FRQWUROOHUV/#ZLWK#KLJK#DFFXUDF\/#ORZ#VXSSO\
FXUUHQW#E\#&026#SURFHVV1
(DFK#RI#WKH#545431;;5;#6HULHV#FRQVLVWV#RI#DQ#RVFLOODWRU/#D#3:0#FLUFXLW/#D#UHIHUHQFH#YROWDJH#XQLW/#DQ#HUURU#DPSOL0
ILHU/#SKDVH#FRPSHQVDWLRQ#FLUFXLW/#UHVLVWRUV#IRU#YROWDJH#GHWHFWLRQ/#D#FKLS#HQDEOH#FLUFXLW/#D#FRQWUROOHU#DJDLQVW#GUDVWLF#ORDG
WUDQVLHQW#DQG#DQ#RXWSXW#YROWDJH#GHWHFWRU1#$#ORZ#ULSSOH/#KLJK#HIILFLHQF\#VWHS0XS#'&2'&#FRQYHUWHU#FDQ#EH#FRPSRVHG#RI
WKLV#,&#ZLWK#RQO\#IRXU#H[WHUQDO#FRPSRQHQWV/#RU#DQ#LQGXFWRU/#D#GLRGH/#D#WUDQVLVWRU#DQG#D#FDSDFLWRU1
7KH#545431;;5;#6HULHV#FDQ#GHWHFW#GUDVWLF#FKDQJH#RI#RXWSXW#YROWDJH#ZLWK#D#FLUFXLW#FRQWUROOHU/#WKH#ORDG#WUDQVLHQW#UH0
VSRQVH#LV#LPSURYHG1
(DFK#RI#WKH#545431;;5;#6HULHV#KDV#D#GULYHU#SLQ/#RU#¶(;7·#SLQ#IRU#H[WHUQDO#WUDQVLVWRU1#%\#FRQQHFWLQJ#D#SRZHU#WUDQ0
VLVWRU#ZLWK#ORZ#210UHVLVWDQFH#WR#(;7#SLQ/#D#ODUJH#FXUUHQW#IORZV#WKURXJK#DQ#LQGXFWRU/#WKXV/#ODUJH#RXWSXW#FXUUHQW#FDQ#EH
VXSSOLHG1
7KH#EXLOW0LQ#FKLS#HQDEOH#FLUFXLW#FDQ#PDNH#WKH#VWDQGE\#PRGH#ZLWK#XOWUD#ORZ#TXLHVFHQW#FXUUHQW1
6LQFH#WKH#SDFNDJH#IRU#WKHVH#,&V#LV#VPDOO#62705608/#KLJK#GHQVLW\#PRXQWLQJ#RI#WKH#,&V#RQ#ERDUG#LV#SRVVLEOH1
FEATURES
•
([WHUQDO#&RPSRQHQWV
111111111111111111111111111111111111111111111111111111111
2QO\#DQ#LQGXFWRU/#D#GLRGH/#D#FDSDFLWRU/#DQG#D#WUDQVLVWRU
•
6WDQGE\#&XUUHQW
111111111111111111111111111111111111111111111111111111111111111111
7<3
1#3—$
•
/RZ#7HPSHUDWXUH0'ULIW#&RHIILFLHQW#RI#2XWSXW#9ROWDJH111111 7<3
1#“433SSP2°&
•
2XWSXW#9ROWDJH111111111111111111111111111111111111111111111111111111111111111111111 6WHSZLVH#6HWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5159#WR
9139
•
7ZR#FKRLFHV#RI#%DVLF#2VFLOODWRU#)UHTXHQF\111111111111111111111111
433N+]#+;;5&,/#4;3N+]#+;;5',
•
6PDOO#3DFNDJH
1111111111111111111111111111111111111111111111111111111111111111111111
62705608#+0LQL0PROG,
•
/RZ#5LSSOH/#/RZ#1RLVH
•
2VFLOODWRU#6WDUW0XS#9ROWDJH11111111111111111111111111111111111111111111111111 0$;1#31;9
APPLICATIONS
•
3RZHU#VRXUFH#IRU#EDWWHU\0SRZHUHG#HTXLSPHQW1
•
3RZHU#VRXUFH#IRU#SRUWDEOH#FRPPXQLFDWLRQ#DSSOLDQFHV/#FDPHUDV/#9&5V
•
3RZHU#VRXUFH#IRU#DSSOLDQFHV#ZKLFK#UHTXLUH#KLJKHU#YROWDJH#WKDQ#EDWWHU\#YROWDJH1
1
R1210N××2×
BLOCK DIAGRAM
Vref Circuit
L
X
5
V
LX
Iimiter
Buffer
PWM/Controller
OSC
Phase Comp.
-
+
-
+
-
+
2
V
OUT
5
EXT
Chip Enable
4
GND
1
CE
SELECTION GUIDE
,Q#WKH#545431#6HULHV/#WKH#RXWSXW#YROWDJH/#WKH#RVFLOODWRU#IUHTXHQF\/#WKH#RSWLRQDO#IXQFWLRQ/#DQG#WKH#WDSLQJ#W\SH#IRU#WKH
,&V#FDQ#EH#VHOHFWHG#DW#WKH#XVHU·V#UHTXHVW1
7KH#VHOHFWLRQ#FDQ#EH#PDGH#E\#GHVLJQDWLQJ#WKH#SDUW#QXPEHU#DV#VKRZQ#EHORZ>
545431;;;;0;;
↑ ↑↑ ↑
D EF G
Code
D
E
6HWWLQJ#2XWSXW#9ROWDJH+9
287
,=
6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5159#WR#9139
'HVLJQDWLRQ#RI#'ULYHU
5=#([WHUQDO#7U1#'ULYHU
'HVLJQDWLRQ#RI#2VFLOODWRU#)UHTXHQF\
F
&=#433N+]
'=#4;3N+]
'HVLJQDWLRQ#RI#7DSLQJ#7\SH>
G
([1=#75/#7/#+UHIHU#WR#7DSLQJ#6SHFLILFDWLRQ,
´75µ#LV#SUHVFULEHG#DV#D#VWDQGDUG1
Contents
2
R1210N××2×
PIN CONFIGURATION
SOT-23-5
5
4
EXT
(mark side)
CE
V
OUT
GND
NC
1
2
3
PIN DESCRIPTION
Pin No.
4
5
6
7
8
&(
9
287
1&
*1'
(;7
Symbol
Description
&KLS#(QDEOH#3LQ
3LQ#IRU#2XWSXW#9ROWDJH
1R#&RQQHFWLRQ
*URXQG#3LQ
([WHUQDO#7UDQVLVWRU#'ULYH#3LQ
ABSOLUTE MAXIMUM RATINGS
Symbol
9
287
9
(;7
9
&(
,
(;7
3'
7RSW
7VWJ
Item
9
287
#3LQ#2XWSXW#9ROWDJH
(;7#3LQ#2XWSXW#9ROWDJH
&(#3LQ#,QSXW#9ROWDJH
(;7#3LQ#,QGXFWRU#'ULYH#2XWSXW#&XU0
UHQW
3RZHU#'LVVLSDWLRQ
2SHUDWLQJ#7HPSHUDWXUH#5DQJH
6WRUDJH#7HPSHUDWXUH#5DQJH
Rating
<
0316∼9
287
.316
<
±73
583
073∼.;8
088∼.458
Unit
9
9
9
P$
P:
°&
°&
3
R1210N××2×
ELECTRICAL CHARACTERISTICS
•
R1210NXX2
Symbol
9
287
9
,1
∆9
287
2∆7
9
67$57
Item
2XWSXW#9ROWDJH
0D[LPXP#,QSXW#9ROWDJH
6WHS0XS#2XWSXW#9ROWDJH
7HPSHUDWXUH#&RHIILFLHQW
6WDUW0XS#9ROWDJH
073°&≤#7RSW#≤#;8°&
9
,1
39→59
43
,
''5
6XSSO\#&XUUHQW#5
9
287
9
&(
9
6(7
.3189
48
,VWDQGE\
6XSSO\#&XUUHQW#6+6WDQGE\,
9
287
9189#9
&(
39
9
287
9
6(7
×31<9#(;7#DW#QR#ORDG
5159#≤#9VHW#≤#5179
4;
56
53
58
58
63
63
68
68
73
55
318
68
78
73
83
83
93
93
:3
:3
;3
±433
31;
48
Conditions
9
,1
9
6(7
×319/#,
287
4P$
MIN.
×31<:8
TYP.
+7RSW 58°&,
MAX.
×41358
;
Unit
9
9
SSP2
°&
9
µ$
+[[5&,
µ$
+[[5',
µ$
µ$
+[[5&,
µ$
+[[5',
µ$
+[[5&,
µ$
+[[5',
µ$
+[[5&,
µ$
+[[5',
µ$
+[[5&,
µ$
+[[5',
µ$
+[[5&,
µ$
+[[5',
9
287
9
6(7
×31<9#(;7#DW#QR#ORDG
5189#≤#9VHW#≤#6139
,
''4
6XSSO\#&XUUHQW4
9
287
9
6(7
×31<9#(;7#DW#QR#ORDG
6149#≤#9VHW#≤#61<9
9
287
9
6(7
×31<9#(;7#DW#QR#ORDG
79#≤#9VHW#≤#7179
9
287
9
6(7
×31<9#(;7#DW#QR#ORDG
7189#≤#9VHW#≤#71<9
4
