qfn-10
csp-8
www.ti.com
产品 预览
特点
描述
应用程序
VIN 软件
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
我
2.7 v . . 6 v
4.7
µ
f
v
o
1.8 v/500 ma
L1
1
µ
h
0
10
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1 k
v
我
= 3.6 v,
v
o
= 1.8 v
l = 2.2
µ
h,
c
o
= 4.7
µ
f
效率 − %
我
o
− 荷载 电流 − ma
tps62300,tps62301,tps62302
tps62303,tps62304,tps62305
tps62306,tps62320,tps62321
SLVS528–JULY2004
500-ma,3-mhzsynchronousstep-下变频器
INCHIPSCALEPACKAGING
•
upto93%efficiencyat3-mhzoperation
thetps623xxdeviceisahigh-frequencysynchron-
•
upto500-maoutputcurrentatv
我
=2.7v
ousstep-downdc-dcconverteroptimizedfor
•
3-mhzfixedfrequencyoperation
蓄电池-poweredportableapplications.intendedfor
•
BestinClass
LoadandLineTransient
低-powerapplications,thetps623xxsupportsupto
500-maloadcurrentandallowstheuseoftiny,低
•
complete1-mmcomponentprofilesolution
costchipinductorandcapacitors.
•
-0.5%/+1.3%pwmdcvoltageaccuracyover
Thedeviceisidealformobilephonesandsimilar
温度
portableapplicationspoweredbyasingle-cellli-离子
•
35-nsminimumon-时间
batteryorby3-cellnimh/nicdbatteries.withan
•
电源-savemodeoperationatlightload
outputvoltagerangefrom5.4vdownto0.6v,这
电流
devicesupportslow-voltagedspsandprocessorsin
智能-电话,pdasaswellasnotebooks,和
•
FixedandAdjustableOutputVoltage
handheldcomputers.
•
only86-µaquiescentcurrent
thetps62300operatesat3-mhzfixedswitching
•
100%DutyCycleforLowestDropout
frequencyandentersthepower-savemodeoperation
•
可同步
OntheFly
toExternal
atlightloadcurrentstomaintainhighefficiencyover
时钟信号
theentireloadcurrentrange.forlownoiseappli-
•
integratedactivepower-downsequencing
阳离子,thedevicecanbeforcedintofixedfrequency
(tps6232xonly)
pwmmodebypullingthemode/syncpinhigh.这
devicecanalsobesynchronizedtoanexternalclock
•
availableina10-pinqfn(3x3mm)和
signalintherangeof3mhz.intheshutdownmode,
8-pinnanofree™andnanostar™(csp)
thecurrentconsumptionisreducedtolessthan1µa.
包装
thetps623xxisavailableina10-pinleadless
包装(3
×
3mmqfn)andan8-pinchip-缩放
包装(csp).
•
cellphones,智能-电话
•
WLANandBluetooth™Applications
•
microdc-dcconvertermodules
•
pdas,pocketpcs
•
usb-baseddslmodems
•
DigitalCameras
figure1.smallestsolutionsizeapplication
(fixedoutputvoltage)
figure2.efficiencyvsloadcurrent
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bluetoothisatrademarkofbluetoothsig,公司
nanofree,nanostararetrademarksoftexasinstruments.
powerpadisatrademarkoftexasinstsruments.
productpreviewinformationconcernsproductsintheforma-
copyright©2004,texasinstrumentsincorporated
开发阶段.characteristicdataandother
规范设计目标.texasinstrumentsreservesthe
右更改或中断eseproductswithoutdotice.
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