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24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
tps2223a, tps2224a
db 或者 pwp pACKAGE
(t运算 视图)
5V
5V
数据
时钟
获得
NC
12V
†
AVPP
AVCC
AVCC
地
重置
5V
NC
NC
SHDN
12V
†
BVPP
BVCC
BVCC
NC
OC
3.3v
3.3v
NC
−
非
内部的
连接
†
管脚 7 和 20 是 nc 为 tps2223a.
描述
tps2220a,tps2223a
tps2224a,tps2226a
SLVS428B–MAY2002–REVISEDSEPTEMBER2004
cardbuspower-interfaceswitches
FORSERIALPCMCIACONTROLLERS
•
NotebookandDesktopComputers
•
单独的-slotswitch:tps2220a
双-slotswitches:tps2223a,tps2224a,
•
BarCodeScanners
TPS2226A
•
DigitalCameras
•
FastCurrentLimitResponseTime
•
设置-topboxes
•
PDAs
•
FullyIntegratedVCCandVPPSwitchingfor
3.3v,5v,and12v(no12vontps2223a)
•
MeetsCurrentPCCard™Standards
•
V
pp
OutputSelectionIndependentofV
CC
•
12-vand5-vsuppliescanbedisabled
•
ttl-logiccompatibleinputs
•
短的-circuitandthermalprotection
•
24-pinhtssop,24-or30-pinssop
•
140-µa(典型)quiescentcurrentfrom
3.3-vinput
•
破裂-在之前-makeswitching
•
电源-onreset
•
40
°
Cto85
°
COperatingAmbientTemperature
范围
thetps2223a,tps2224a,andtps2226acardbus™power-interfaceswitchesprovideanintegrated
电源-managementsolutionfortwopccardsockets.thetps2220aisasingle-slotoptionforthisfamilyof
设备.thesedevicesallowthecontrolleddistributionof3.3v,5v,and12vtoeachcardslot.这
电流-limitingandthermal-protectionfeatureseliminatetheneedforfuses.电流-limitreportinghelpstheuser
isolateasystemfault.theswitchr
ds(在)
andcurrent-limitvalueshavebeensetforthepeakandaveragecurrent
requirementsstatedinthepccardspecification,andoptimizedforcost.afastermaximumcurrentlimit
responsetimeistheonlydifferencebetweenthetps2223a,tps2224a,andtps2226aandthetps2223,
tps2224,andtps2226.
likethetps2214andtps2214aandthetps2216andtps2216a,thisfamilyofdevicessupportsindependent
vpp/vccswitching;不管怎样,thestandbyandinterface-modepinsarenotsupported.shutdownmodeisnow
supportedindependentlyonshdnaswellasintheserialinterface.optimizedforlowerpowerimplementation,
thetps2223adoesnotsupport12-vswitchingtovpp.seetheavailableoptionstableforpin-compatibledevice
信息.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
pccard,cardbusaretrademarksofpcmcia(personalcomputermemorycardinternationalassociation).
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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