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3
2
4
5
dbv 包装
(顶 视图)
1
在
地
EN
输出
NR
fixed 选项
3
2
4
6
dbv 包装
(顶 视图)
1
在
地
EN
输出
NR
5
FB
可调整的 选项
TPS79328
波纹拒绝
vs
频率
在
EN
输出
NR
地
YEQ
包装
(顶视图)
10 100 1 k 10 k
10
40
80
100 k 1 m 10 m
波纹 拒绝 (db)
频率 (hz)
I
输出
= 10 毫安
50
0
V
在
= 3.8 v
C
输出
= 10
µ
F
C
NR
= 0.01
µ
F
I
输出
= 200 毫安
20
30
60
70
90
100
A3 A1
C3 C1
B2
0
0.05
0.10
0.15
0.20
0.25
0.30
100 1 k 10 k 100 k
频率 (hz)
I
输出
= 1 毫安
V
在
= 3.8 v
C
输出
= 2.2
µ
F
C
NR
= 0.1
µ
F
I
输出
= 200 毫安
TPS79328
输出谱的 噪音 密度
vs
频率
输出谱的 噪音 密度 (
µ
v/
√
hz)
tps79301,tps79318
tps79325,tps79328,tps793285
tps79330,tps79333,tps793475
SLVS348H–JULY2001–REVISEDOCTOBER2004
ultralow-噪音,highpsrr,fastrf200-malow-dropoutlinear
REGULATORSINNanoStar™WAFERCHIPSCALEANDSOT23
•
200-marflow-dropoutregulator
thetps793xxfamilyoflow-落后(ldo)
WithEnable
低-powerlinearvoltageregulatorsfeatureshigh
电源-supplyrejectionratio(psrr),ultralow-噪音,
•
availablein1.8-v,2.5-v,2.8-v,2.85-v,3-v,
faststart-向上,andexcellentlineandloadtransient
3.3-v,4.75-v,andadjustable(1.22-vto5.5-v)
responsesinNanoStarwaferchipscaleandSOT23
•
highpsrr(70dbat10khz)
包装.nanostarpackaginggivesanultrasmall
•
ultralow-噪音(32µv
RMS
,tps79328)
footprintaswellasanultralowprofileandpackage
重量,makingitidealforportableapplicationssuch
•
faststart-uptime(50µs)
ashandsetsandpdas.eachdeviceinthefamilyis
•
stablewitha2.2-µfceramiccapacitor
稳固的,withasmall2.2-µfceramiccapacitoronthe
•
excellentload/linetransientresponse
输出.thetps793xxfamilyusesanadvanced,
proprietarybicmosfabricationprocesstoyieldex-
•
verylowdropoutvoltage(112mvatfull
tremelylowdropoutvoltages(e.g.,112mvat
加载,tps79330)
200ma,tps79330).eachdeviceachievesfast
•
5-and6-pinsot23(dbv)andnanostarwafer
开始-uptimes(approximately50µswitha0.001-µf
chipscale(yeq)包装
bypasscapacitor)whileconsumingverylowquiesc-
entcurrent(170µatypical).moreover,whenthe
deviceisplacedinstandbymode,thesupplycurrent
•
rf:vcos,接受者,adcs
isreducedtolessthan1µa.thetps79328exhibits
approximately32µV
RMS
ofoutputvoltagenoiseat
•
音频的
2.8-voutputwitha0.1-µfbypasscapacitor.appli-
•
CellularandCordlessTelephones
cationswithanalogcomponentsthatare
•
bluetooth™,wirelesslan
噪音-敏感的,suchasportablerfelectronics,
•
handheldorganizers,pdas
benefitfromthehighpsrrandlow-noisefeatures
aswellasthefastresponsetime.
figure1.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bluetoothisatrademarkofbluetoothsig,公司
nanostarisatrademarkoftexasinstruments.
unlessotherwisenotedthisdocumentcontainspro-
copyright©2001–2004,texasinstrumentsincorporated
ductiondatainformationcurrentasofpublicationdate.prod-
uctsconformtospecificationsperthetermsofTexasInstruments
standardwarranty.productionprocessingdoesnotnecessarily
includetestingofallparameters.
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