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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
TPS73028
波纹拒绝
vs
频率
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
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
TPS73028
输出谱的 噪音 密度
vs
频率
输出谱的 噪音 密度 (
µ
v/
√
hz)
tps73001,tps73018
TPS73025
tps73030,tps73033
SBVS054A–NOVEMBER2004–REVISEDNOVEMBER2004
低-噪音,highpsrr,rf200-毫安
低-dropoutlinearregulators
•
200-marflow-dropoutregulator
thetps730xxfamilyoflow-落后(ldo)
WithEnable
低-powerlinearvoltageregulatorsfeatureshigh
电源-supplyrejectionratio(psrr),ultralow-噪音,
•
availablein1.8-v,2.5-v,3-v,3.3-v,和
faststart-向上,andexcellentlineandloadtransient
可调整的(1.22-vto5.5-v)
responsesasmallsot23package.eachdevicein
•
highpsrr(68dbat1khz)
thefamilyisstable,withasmall2.2-µfceramic
•
ultralow-噪音(23µv
RMS
,tps73018)
capacitorontheoutput.thetps730xxfamilyuses
anadvanced,proprietarybicmosfabricationpro-
•
faststart-uptime(50µs)
cesstoyieldlowdropoutvoltages(e.g.,120mvat
•
stablewitha2.2-µfceramiccapacitor
200ma,tps73030).eachdeviceachievesfast
•
excellentload/linetransientresponse
开始-uptimes(approximately50µswitha0.001-µf
bypasscapacitor)whileconsuminglowquiescent
•
verylowdropoutvoltage(120mvatfull
电流(170µatypical).moreover,whenthedevice
加载)
isplacedinstandbymode,thesupplycurrentis
•
5-and6-pinsot23(dbv)包装
reducedtolessthan1µa.thetps73018exhibits
approximately23µV
RMS
ofoutputvoltagenoiseat
2.8-voutputwitha0.01-µfbypasscapacitor.appli-
•
rf:vcos,接受者,adcs
cationswithanalogcomponentsthatare
噪音-敏感的,suchasportablerfelectronics,
•
音频的
benefitfromthehighpsrrandlow-noisefeatures
•
CellularandCordlessTelephones
aswellasthefastresponsetime.
•
bluetooth™,wirelesslan
•
handheldorganizers,pdas
figure1.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bluetoothisatrademarkofbluetoothsig,公司
productiondatainformationiscurrentasofpublicationdate.
copyright©2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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