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PINASSIGNMENTS
ADJ
FB
一个
VIN
EN
AGND
SW
VIN
模式/同步
PGND
VOUT
VIN
NC
NC
一个
VIN
EN
AGND
SW
模式/同步
PGND
VOUT
ADJ
A1
B1
C1
D1
A2
B2
C2
D2
地
SW
模式/同步
VOUT
VIN
EN
FB
模式/同步
C1
A2
B2
C2
D2
A1
B1
D1
VIN
EN
ADJ
FB
地
SW
VOUT
tps62300, tps62320
qfn-10
(顶 视图)
tps6230x, tps6232x
fixed 输出 电压 (qfn-10)
(顶 视图)
tps6230x, tps6231x, tps6232x
csp-8
(顶 视图)
tps6230x, tps6231x, tps6232x
csp-8
(bottom 视图)
tps62300,tps62301,tps62302
tps62303,tps62305,tps62311
tps62313,tps62320,tps62321
SLVS528B–JULY2004–REVISEDJUNE2005
TERMINALFUNCTIONS
终端
i/odescription
非.非.
名字
QFNCSP
vin1a2isupplyvoltageforoutputpowerstage.
avin2ithisistheinputvoltagepinofthedevice.connectdirectlytotheinputbypasscapacitor.
thisistheenablepinofthedevice.connectingthispintogroundforcesthedeviceintoshutdown
en3b2imode.pullingthispintov
I
enablesthedevice.thispinmustnotbeleftfloatingandmustbe
terminated.
ThisistheinternalreferencevoltageusedtoregulateV
O
.thispinisnotconnectedonfixedoutput
voltageversionoftps6230xdrcandtps6232xdrc.donotconnectadjpinonfixedoutput
voltageversionoftps6230xyzd,tps6231xyzdandtps6232xyxd.
adj4c2i/o
ontps62300andtps62320,thispincanalsobeusedasanexternalcontrolinput.theoutput
voltageis1.5xtheappliedvoltageatadj.
thisisthefeedbackpinofthedevice.fortheadjustableversion,anexternalresistordivideris
connectedtothispin.theinternalvoltagedividerisdisabledfortheadjustableversion.thispinis
fb5d2inotconnectedonfixedoutputvoltageversionoftps6230xdrcandtps6232xdrc.donot
connectthefbpinonthefixedoutputvoltageversionoftps6230xyzd,tps6231xyzdand
tps6232xyxd.
vout6d1ioutputfeedbacksenseinput.connectvouttotheconverter’soutput.
agnd7analogground.connecttopgndviathepowerpad™underneathic.
inputforsynchronizationtoexternalclocksignal.thispinmustnotbeleftfloatingandmustbe
terminated.synchronizestheconverterswitchingfrequencytoanexternalclocksignal
模式/同步=低(地):thedeviceisoperatinginfixedfrequencypulsewidthmodulation
模式/sync8c1i
模式(pwm)athigh-loadcurrentsandinpulsefrequencymodulationmode(pfm)atlightload
电流.
模式/同步=高(vin):低-noisemodeenabled,fixedfrequencypwmoperationforced.
pgnd9a1powerground.
ThisistheswitchpinoftheconverterandisconnectedtothedrainoftheinternalPower
sw10b1i/o
mosfets.
powerpad™n/ainternallyconnectedtopgnd.
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