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SW
C1
10
µ
F
L1
6.8
µ
H
R1
R2
VBAT
VOUT
FB
C2
2.2
µ
F
C3
220
µ
F
LBO
PGND
LBI
同步
EN
地
TPS6103x
e.g. 5 v 向上 至
1000 毫安
低 电池
比较器
输出
R3
R4
R6
1.8 v 至 5 v
输入
TPS61030
tps61031,tps61032
SLUS534D–SEPTEMBER2002–REVISEDAPRIL2004
96%EFFICIENTSYNCHRONOUSBOOSTCONVERTERWITH4ASWITCH
•
96%EfficientSynchronousBoostConverter
TheTPS6103xdevicesprovideapowersupply
with1000-maoutputcurrentfrom1.8-v
solutionforproductspoweredbyeitheraone-cell
输入
li-ionorli-polymer,oratwotothree-cellalkaline,
nicdornimhbattery.theconvertergeneratesa
•
devicequiescentcurrent:20-µa(典型值)
stableoutputvoltagethatiseitheradjustedbyan
•
inputvoltagerange:1.8-vto5.5-v
externalresistordividerorfixedinternallyonthechip.
•
FixedandAdjustableOutputVoltageOptions
Itprovideshighefficientpowerconversionandis
upto5.5-v
capableofdeliveringoutputcurrentsupto1Aat5V
atasupplyvoltagedownto1.8v.theimplemented
•
PowerSaveModeforImprovedEfficiencyat
boostconverterisbasedonafixedfrequency,
LowOutputPower
脉冲波-宽度-调制(pwm)controllerusinga
•
LowBatteryComparator
synchronousrectifiertoobtainmaximumefficiency.
•
lowemi-转换器(integratedantiringing
AtlowloadcurrentstheconverterentersPowerSave
modetomaintainahighefficiencyoverawideload
转变)
currentrange.thepowersavemodecanbedis-
•
LoadDisconnectDuringShutdown
abled,forcingtheconvertertooperateatafixed
•
在-temperatureprotection
switchingfrequency.itcanalsooperatesynchronized
•
availableinasmall4mmx4mmqfn-16or
toanexternalclocksignalthatisappliedtothe
syncpin.themaximumpeakcurrentintheboost
inatssop-16package
switchislimitedtoavalueof4500ma.
Theconvertercanbedisabledtominimizebattery
•
AllSingleCellLiorDualCellBattery
流.duringshutdown,theloadiscompletelydis-
operatedproductsasmp-3player,pdas,和
connectedfromthebattery.alow-emimodeis
OtherPortableEquipment
implementedtoreduceringingand,ineffect,更小的
radiatedelectromagneticenergywhentheconverter
entersthediscontinuousconductionmode.
thedeviceispackagedina16-pinqfnpackage
measuring4mmx4mm(rsa)orina16-管脚
tssoppowerpad™package(pwp).
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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