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应用程序
1
2
3
4
5
6
地
dcq p组件
sot223-6
(top 查看)
nr/fb
出点
地
入点
en
1
ktt p组件
DDPak-5
(top 查看)
2
3
4
5
en
入点
地
出点
0
10
20
30
40
50
60
70
80
频率(赫兹)
1 10k 10M1k
波纹 拒收 − (db)
我
出点
= 1 ma
TPS78630
波纹拒收
vs
频率
我
出点
= 1.5 一个
v
入点
= 4 v
c
出点
= 10
µ
f
c
NR
= 0.01
µ
f
10 100 100k 1M
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
频率 (赫兹)
100 10k 100k1k
输出 光谱 噪声 密度 − (
µ
v/ 赫兹)
我
出点
= 1 ma
TPS78630
输出光谱 噪声 密度
vs
频率
我
出点
= 1.5 一个
v
入点
= 5.5 v
c
出点
= 2.2
µ
f
c
NR
= 0.1
µ
f
nr/fb
选项卡
地
TPS786xx
SLVS389F–SEPTEMBER2002–REVISEDDECEMBER2005
超低-噪声,高-psrr,快,rf,1.5-一个
低-dropoutlinearregulators
•
1.5-alow-dropoutregulatorwithenable
thetps786xxfamilyoflow-辍学(ldo)
低-powerlinearvoltageregulatorsfeatureshigh
•
availableinfixedandadjustable(1.2-vto
电源-supplyrejectionratio(psrr),ultralownoise,
5.5-v)outputversions
faststart-向上,andexcellentlineandloadtransient
•
highpsrr(49dbat10khz)
responsesinsmalloutline,sot223-6andddpak-5
•
ultralownoise(48
µ
v
rms
,tps78630)
软件包.eachdeviceinthefamilyisstable,与a
small1-
µ
fceramiccapacitorontheoutput.这
•
faststart-uptime(50µs)
familyusesanadvanced,proprietarybicmos
•
stablewitha1-
µ
FCeramicCapacitor
fabricationprocesstoyieldextremelylowdropout
•
excellentload/linetransientresponse
电压(例如,390mvat1.5a).eachdevice
achievesfaststart-uptimes(approximately50
µ
swith
•
verylowdropoutvoltage(390mvatfull
a0.001µfbypasscapacitor)whileconsumingvery
荷载,tps78630)
lowquiescentcurrent(265
µ
一个,典型).此外,
•
6-pinsot223and5-pinddpakpackage
whenthedeviceisplacedinstandbymode,这
supplycurrentisreducedtolessthan1
µ
一个.这
TPS78630exhibitsapproximately48
µ
v
rms
ofoutput
•
rf:vcos,接收器,adcs
voltageat3.0voutputnoisewitha0.1
µ
Fbypass
电容器.applicationswithanalogcomponentsthat
•
音频
arenoisesensitive,suchasportablerfelectronics,
•
Bluetooth
®
,wirelesslan
benefitfromthehighpsrr,lownoisefeatures,和
•
CellularandCordlessTelephones
thefastresponsetime.
•
handheldorganizers,pdas
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
bluetoothisaregisteredtrademarkofbluetoothsig,公司
alltrademarksarethepropertyoftheirrespectiveowners.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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