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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 ma
低 蓄电池
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
解决方案productspoweredbyatheraone-cell
输入
李-ionorli-聚合物,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-宽度-调制(pwm)controllerusinga
•
LowBatteryComparator
synchronousrectifiertoobtainmaximumefficiency.
•
lowemi-变频器(integratedantiringing
AtlowloadcurrentstheconverterentersPowerSave
modetomaintainahighefficiencyoverawideload
开关)
currentrange.thepowersavemodecanbedis-
•
LoadDisconnectDuringShutdown
abled,forcingtheconvertertooperateatafixed
•
结束-temperatureprotection
switchingfrequency.itcanalsooperatesynchronized
•
availableinasmall4mmx4mmqfn-16or
toanexternalclocksignalthatisappliedtothe
syncpin.themaximumpeakcurrentintheboost
inatssop-16package
switchislimitedtoavalueof4500ma.
Theconvertercanbedisabledtominimizebattery
•
AllSingleCellLiorDualCellBattery
排水管.duringshutdown,theloadiscompletelydis-
operatedproductsasmp-3player,pdas,和
connectedfromthebattery.alow-emimodeis
OtherPortableEquipment
implementedtoreduceringingand,ineffect,下部
radiatedelectromagneticenergywhentheconverter
entersthediscontinuousconductionmode.
thedeviceispackagedina16-pinqfnpackage
measuring4mmx4mm(rsa)orina16-管脚
tssoppowerpad™package(pwp).
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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