Step-down DC/DC Converter
with VR and Reset
5[6(5,(6
1
5[B(GRF
NO. EA-102-0301
OUTLINE
7KH 5[ LV &026EDVHG 3:0 VWHSGRZQ '&'& FRQYHUWHU FRPELQHG ZLWK D YROWDJH UHJXODWRU 95 DQG D YROW
DJH GHWHFWRU9'ZLWK ORZVXSSO\FXUUHQW
(DFK RI WKHVH ,&V FRQVLVWV RI DQ RVFLOODWRU D 3:0 FRQWURO FLUFXLW D UHIHUHQFHYROWDJH XQLW DQ HUURU DPSOLILHU D VRIW
VWDUW FLUFXLW D FXUUHQW OLPLW FLUFXLW D SKDVH FRPSHQVDWLRQ FLUFXLW D UHVLVWRU QHW IRU YROWDJH GHWHFW FLUFXLW DQ RXWSXW
GULYHU WUDQVLVWRU DQG VR RQ $ ORZ ULSSOH KLJK HIILFLHQF\ VWHSGRZQ '&'& FRQYHUWHU FDQ EH HDVLO\ FRPSRVHG RI WKLV
,&ZLWKVRPHH[WHUQDOFRPSRQHQWVRU DQLQGXFWRU D GLRGHDQG FDSDFLWRUV
7KHRVFLOODWRUIUHTXHQF\LVN+]WKHUHIRUH VPDOO LQGXFWRU DQG FDSDFLWRU FDQ EH XVHG ZLWK WKLV ,& )XUWKHU WKLV ,&
HTXLSV WKH XQGHU YROWDJH ORFNRXW IXQFWLRQ 89/2 ,I WKH LQSXW YROWDJH EHFRPHV 9 7\S RU OHVV WKH RXWSXW RI
'&'& FRQYHUWHULVWXUQHGRII+RZHYHU HPEHGGHG YROWDJH UHJXODWRUDQG WKH GHWHFWRUFRQWLQXH WR RSHUDWH
7KH YROWDJH UHJXODWRU FRQVLVWV RI D UHIHUHQFH YROWDJH XQLW D UHVLVWRU QHW IRU YROWDJH GHWHFW FLUFXLW DQ HUURU DPSOL
ILHU DQRXWSXWGULYHUWUDQVLVWRU DQGVRRQ
7KH EXLOWLQ YROWDJH GHWHFWRU VXSHUYLVHV WKH LQSXW YROWDJH DQG WKH RXWSXW LV 1FKDQQHO RSHQ GUDLQ W\SH 3RZHURQ
UHVHWGHOD\WLPH LVDOVR LQFOXGHG DQG LQWHUQDOO\VHWW\SLFDOO\ DWPV
FEATURES
:LGH5DQJHRI,QSXW9ROWDJH9a9
%XLOWLQ6RIWVWDUW )XQFWLRQ7\SPVDQGEXLOWLQ SRZHURQUHVHWGHOD\7\SPV
0D[LPXP2XWSXW&XUUHQW P$'&'&P$95
+LJK$FFXUDF\ 2XWSXW9ROWDJH '&'&DQG9ROWDJH5HJXODWRU2XWSXW
$FFXUDF\RI YROWDJH GHWHFWRU
2XWSXW9ROWDJH95 6WHSZLVH 6HWWLQJ ZLWKDVWHSRI9LQWKHUDQJHRI9WR9
2XWSXW9ROWDJH'&'& 6WHSZLVH 6HWWLQJ ZLWKDVWHSRI9LQWKHUDQJHRI9WR9
2XWSXW9ROWDJH9' 6WHSZLVH 6HWWLQJ ZLWKDVWHSRI9LQWKHUDQJHRI9WR9
3DFNDJHV 627:WKLFNQHVV0D[PPRU+621WKLFNQHVV0D[PP
APPLICATIONS
3RZHUVRXUFHIRUKDQGKHOGFRPPXQLFDWLRQHTXLSPHQW&'RU'9'GULYHV
3RZHUVRXUFHIRU EDWWHU\SRZHUHG HTXLSPHQW