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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)
在
EN
输出
NR
地
yzq pACKAGE
(顶 视图)
A3 A1
C3 C1
B2
TPS730xx
SBVS054E–NOVEMBER2004–REVISEDAUGUST2005
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,2.8-v,3-v,3.3-v,和
faststart-向上,andexcellentlineandloadtransient
可调整的(1.22-vto5.5-v)
responsesasmallsot23package.nanostar™
•
highpsrr(68dbat1khz)
packaginggivesanultrasmallfootprintaswellasan
•
ultralow-噪音(23
µ
V
RMS
,tps73018)
ultralowprofileandpackageweight,makingitideal
forportableapplicationssuchashandsetsandpdas.
•
faststart-uptime(50
µ
s)
eachdeviceinthefamilyisstable,withasmall
•
stablewitha2.2-
µ
FCeramicCapacitor
2.2-
µ
fceramiccapacitorontheoutput.这
•
excellentload/linetransientresponse
tps730xxfamilyusesanadvanced,专卖的
BiCMOSfabricationprocesstoyieldlowdropout
•
verylowdropoutvoltage(120mvatfull
电压(e.g.,120mvat200ma,tps73030).各自
加载)
deviceachievesfaststart-uptimes(approximately50
•
5-and6-pinsot23(dbv),andwaferchip
µ
switha0.001-
µ
fbypasscapacitor)whileconsum-
规模(yzq)包装
inglowquiescentcurrent(170
µ
atypical).moreover,
whenthedeviceisplacedinstandbymode,这
supplycurrentisreducedtolessthan1
µ
一个.这
•
rf:vcos,接受者,adcs
TPS73018exhibitsapproximately23
µ
V
RMS
ofoutput
voltagenoiseat2.8-voutputwitha0.01-
µ
Fbypass
•
音频的
电容.applicationswithanalogcomponentsthat
•
CellularandCordlessTelephones
arenoise-敏感的,suchasportablerfelectronics,
•
Bluetooth
®
,wirelesslan
benefitfromthehighpsrrandlow-noisefeatures
•
handheldorganizers,pdas
aswellasthefastresponsetime.
figure1.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
nanostarisatrademarkoftexasinstruments.
bluetoothisaregisteredtrademarkofbluetoothsig,公司
productiondatainformationiscurrentasofpublicationdate.
copyright©2004–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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