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PINASSIGNMENTS
3
2
4
5
1
V
I
地
EN
SW
FB
tps62220,tps62221,tps62222
tps62223,tps62224
tps62228,tps62229
SLVS491C–SEPTEMBER2003–REVISEDSEPTEMBER2004
DDCPACKAGE
(topview)
TerminalFunctions
终端
i/odescription
nameno.
en3ithisistheenablepinofthedevice.pullingthispintogroundforcesthedeviceintoshutdownmode.
pullingthispintovinenablesthedevice.thispinmustbeterminated.
fb4ithisisthefeedbackpinofthedevice.connectthispindirectlytotheoutputifthefixedoutputvoltage
versionisused.fortheadjustableversion,anexternalresistordividerisconnectedtothispin.这
internalvoltagedividerisdisabledfortheadjustableversion.
GND2Ground
sw5i/oconnecttheinductortothispin.thispinistheswitchpinandisconnectedtotheinternalmosfet
switches.
V
I
1ISupplyvoltagepin
4