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FEATURESDESCRIPTION
应用程序
EN1
fb1/nc
EN2
fb2/nc
NR
10
9
8
7
6
入点
nc
OUT1
OUT2
地
1
2
3
4
5
drc p组件
3mm x 3mm 儿子
(top 查看)
80
70
60
50
40
30
20
10
0
PSRR (db)
10 100 1k 10k 100k 1M 10M
频率 (赫兹)
PSRR (波纹 拒收) vs 频率
v
出点
= 2.8 v
c
出点
= 2.2
µ
f
c
NR
= 0.01
µ
f
我
出点
= 1 ma
我
出点
= 250 ma
tps71202,tps71219
tps71229,tps71247
tps71256,tps71257
SBVS049C–MAY2004–REVISEDJULY2005
dual250maoutput,ultralownoise,highpsrr,
低-dropoutlinearregulator
•
dual250mahigh-performancerfldos
thetps712xxfamilyoflow-辍学(ldo)电压
regulatorsistailoredtonoise-sensitiveandrfappli-
•
AvailableinFixedandAdjustable
阳离子.theseproductsfeaturedual250maldos
voltageoptions(1.2vto5.5v)
withultralownoise,highpower-supplyrejectionratio
•
highpsrr:65dbat10khz
(psrr),andfasttransientandstart-upresponse.
•
ultralownoise:32µvrms
eachregulatoroutputisstablewithlow-cost2.2µf
ceramicoutputcapacitorsandfeaturesverylow
•
faststart-uptime:60µs
dropoutvoltages(125mvtypicalat250ma).每个
•
stablewith2.2µfceramiccapacitor
regulatorachievesfaststart-uptimes(大约
•
excellentload/linetransientresponse
60µswitha0.001µfbypasscapacitor)同时
consumingverylowquiescentcurrent(300µatypical
•
verylowdropoutvoltage:125mvat250ma
withbothoutputsenabled).whenthedeviceis
•
IndependentEnablePins
placedinstandbymode,thesupplycurrentisre-
•
ThermalShutdownandIndependentCurrent
ducedtolessthan0.3µatypical.eachregulator
限制
exhibitsapproximately32µVrmsofoutputvoltage
noisewithV
出点
=2.8vanda0.01µfnoise
•
availableinthermally-enhancedson
减少(nr)电容器.applicationswithanalog
包装:3mmx3mmx1mm
componentsthatarenoise-敏感,suchasport-
ablerfelectronics,willbenefitfromhighpsrr,低
噪声,andfastlineandloadtransientfeatures.这
•
CellularandCordlessPhones
TPS712familyisofferedinathin3mmx3mmSON
•
wirelesspda/handheldproducts
packageandisfullyspecifiedfrom-40°cto+125°c
•
pcmcia/wirelesslanapplications
(t
j
).
•
digitalcamera/camcorder/internetaudio
•
dsp/fpga/asic/controllersandprocessors
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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