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DEVICEINFORMATION
PINASSIGNMENTTOPVIEW
16
15
14
13
5
6
7
8
1
2
3
4
9
地
地
FB
AGND
PGND
Exposed
热的
垫子
VIN
VIN
EN
PGND
SW
LBI
VINA
SW
PG
同步
LBO
12
11
10
TPS62110
TPS62111
TPS62112
SLVS585–JULY2005
TERMINALFUNCTIONS
终端
i/odescription
nameno.
使能.alogichighenablestheconverter;logiclowforcesthedeviceintoshutdownmodereducingthe
EN4I
supplycurrenttolessthan2µa.
feedbackpinforthefixedoutputvoltageoption.fortheadjustableversion,anexternalresistivedivider
FB10I
isconnectedtothispin.theinternalvoltagedividerisdisabledfortheadjustableversion.
lbo6oopen-流,低-batteryoutput.thispinispulledlowiflbiisbelowitsthreshold.
gnd11,12iground
lbi7ilow-batteryinput
connecttheinductortothispin.thispinistheswitchpinandconnectedtothedrainoftheinternal
sw14,15o
powermosfets.
powergoodcomparatoroutput.thisisanopen-drainoutput.apullupresistorshouldbeconnected
pg13obetweenpgandvout.theoutputgoesactivehighwhentheoutputvoltageisgreaterthan98.4%of
thenominalvalue.
pgnd1,16ipowerground.connectallpowergroundstothispin.
agnd9ianalogground,connecttogndandpgnd
sync5iinputforsynchronizationtoexternalclocksignal.synchronizestheconverterswitchingfrequencytoan
externalclocksignalwithcmoslevel:
同步=高:低-noisemodeenabled,fixedfrequencypwmoperationisforced
同步=低(地):powersavemodeenabled,pfm/pwmmodeenabled
vin2,3isupplyvoltageinput(powerstage)
vina8isupplyvoltageinput(supportcircuits)
PowerPAD™ConnecttoAGND
5
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