qfn-10
csp-8
www.德州仪器.com
特性
描述
产品
VIN SW
TPS62303YZD
ADJ
C1
C2
VOUT
EN
模式/同步
FB
A2
B2
C1
B1
D1
C2
D2
地
A1
4.7
µ
F
V
I
2.7 v . . 6 v
4.7
µ
F
V
O
1.8 v/500 毫安
L1
1
µ
H
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1 k
V
I
= 3.6 v,
V
O
= 1.8 v
l = 2.2
µ
h,
C
O
= 4.7
µ
F
效率 − %
I
O
− 加载 电流 − 毫安
tps62300,tps62301,tps62302
tps62303,tps62305,tps62311
tps62313,tps62320,tps62321
SLVS528B–JULY2004–REVISEDJUNE2005
500-毫安,3-mhzsynchronousstep-downconverter
INCHIPSCALEPACKAGING
•
upto93%efficiencyat3-mhzoperation
thetps623xxdeviceisahigh-frequencysynchron-
•
upto500-maoutputcurrentatv
I
=2.7v
ousstep-downdc-dcconverteroptimizedfor
•
3-mhzfixedfrequencyoperation
电池-poweredportableapplications.intendedfor
•
BestinClass
LoadandLineTransient
低-powerapplications,thetps623xxsupportsupto
500-maloadcurrentandallowstheuseoftiny,低
•
complete1-mmcomponentprofilesolution
costchipinductorandcapacitors.
•
-0.5%/+1.3%pwmdcvoltageaccuracyover
Thedeviceisidealformobilephonesandsimilar
温度
portableapplicationspoweredbyasingle-cellli-ion
•
35-nsminimumon-时间
batteryorby3-cellnimh/nicdbatteries.withan
•
电源-savemodeoperationatlightload
outputvoltagerangefrom5.4vdownto0.6v,这
电流
devicesupportsthelow-voltagetms320™dsp
家族,processorsinsmart-phones,pdasaswellas
•
FixedandAdjustableOutputVoltage
notebooks,andhandheldcomputers.
•
only86-
µ
AQuiescentCurrent
thetps62300operatesat3-mhzfixedswitching
•
100%DutyCycleforLowestDropout
frequencyandentersthepower-savemodeoperation
•
Synchronizable
OntheFly
toExternal
atlightloadcurrentstomaintainhighefficiencyover
ClockSignal
theentireloadcurrentrange.forlownoiseappli-
•
integratedactivepower-downsequencing
cations,thedevicecanbeforcedintofixedfrequency
(tps6232xonly)
pwmmodebypullingthemode/syncpinhigh.这
devicecanalsobesynchronizedtoanexternalclock
•
availableina10-pinqfn(3x3mm)和
signalintherangeof3mhz.intheshutdownmode,
highlyreliable8-pinnanofree™and
thecurrentconsumptionisreducedtolessthan1
µ
一个.
nanostar™(csp)包装
thetps623xxisavailableina10-pinleadless
包装(3x3mmqfn)andan8-pinchip-规模
包装(csp).
•
cellphones,smart-phones
•
WLANandBluetooth™Applications
•
microdc-dcconvertermodules
•
pdas,pocketpcs
•
usb-baseddslmodems
•
DigitalCameras
figure1.smallestsolutionsizeapplication
(fixedoutputvoltage)
figure2.efficiencyvsloadcurrent
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
nanofree,nanostar,tms320aretrademarksoftexasinstruments.
bluetoothisatrademarkofbluetoothsig,公司
powerpadisatrademarkoftexasinstsruments.
unlessotherwisenotedthisdocumentcontainspro-
copyright©2004–2005,texasinstrumentsincorporated
ductiondatainformationcurrentasofpublicationdate.prod-
uctsconformtospecificationsperthetermsofTexasInstruments
standardwarranty.productionprocessingdoesnotnecessarily
includetestingofallparameters.
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