www.德州仪器.com
特性
描述
产品
Typical 应用 电路
1.2v 3.3v
TPS3808G12 TPS3808G33 DSP
SENSE V
DD
V
DD
SENSE
V
i/o
V
核心
GPIO
GNDGNDGND
重置 MR
C
T
C
T
重置
DBV 包装
SOT23
(顶 视图)
V
DD
SENSE
C
T
重置
地
MR
1
2
3
6
5
4
重置
地
MR
6
5
4
V
DD
SENSE
C
T
1
2
3
DRV 包装
2mm x 2mm QFN
(顶 视图)
电源
垫子
TPS3808
SBVS050E–MAY2004–REVISEDOCTOBER2005
lowquiescentcurrent,可编程序的-延迟
SupervisoryCircuit
•
电源-onresetgeneratorwithadjustable
delaytime:1.25msto10s
TheTPS3808xxxfamilyofmicroprocessor
supervisorycircuitsmonitorsystemvoltagesfrom
•
verylowquiescentcurrent:2.4
µ
Atyp
0.4vto5.0v,assertinganopendrainresetsignal
•
highthresholdaccuracy:0.5%typ
whentheSENSEvoltagedropsbelowapreset
•
FixedThresholdVoltagesforStandard
thresholdorwhenthemanualreset(mr)pindropsto
voltagerailsfrom0.9vto5vandadjustable
alogiclow.theresetoutputremainslowforthe
voltagedownto0.4vareavailable
useradjustabledelaytimeaftertheSENSEvoltage
andmanualreset(mr)returnabovetheirthresholds.
•
manualreset(mr)输入
•
打开-drainresetoutput
TheTPS3808usesaprecisionreferencetoachieve
0.5%thresholdaccuracyforv
它
≤
3.3v.thereset
•
temperaturerange:–40
°
Cto+125
°
C
delaytimecanbesetto20msbydisconnectingthe
•
SmallSOT23and2mm
×
2mmQFNPackages
C
T
管脚,300msbyconnectingthec
T
pintoV
DD
使用
aresistor,orcanbeuser-adjustedbetween1.25ms
and10sbyconnectingtheC
T
pintoanexternal
•
DSPorMicrocontrollerApplications
电容.thetps3808hasaverylowtypical
quiescentcurrentof2.4
µ
asoitiswell-suitedto
•
notebook/desktopcomputers
电池-poweredapplications.itisavailableinasmall
•
pdas/hand-heldproducts
sot23andanultra-small2mm
×
2mmQFN
•
可携带的/电池-poweredproducts
PowerPAD™packageandisfullyspecifiedovera
•
fpga/asicapplications
temperaturerangeof–40
°
Cto+125
°
c(t
J
).
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
alltrademarksarethepropertyoftheirrespectiveowners.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
: 点此下载
