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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 pwp p组件
(top 查看)
5V
5V
数据
时钟
门闩
nc
12V
†
AVPP
AVCC
AVCC
地
重置
5V
nc
nc
SHDN
12V
†
BVPP
BVCC
BVCC
nc
oc
3.3v
3.3v
nc
−
否
内部
连接
†
管脚 7 和 20 是 nc 用于 tps2223a.
描述
tps2220a,tps2223a
tps2224a,tps2226a
SLVS428B–MAY2002–REVISEDSEPTEMBER2004
cardbuspower-interfaceswitches
FORSERIALPCMCIACONTROLLERS
•
NotebookandDesktopComputers
•
单独-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
抄送
•
12-vand5-vsuppliescanbedisabled
•
ttl-logiccompatibleinputs
•
短-circuitandthermalprotection
•
24-pinhtssop,24-or30-pinssop
•
140-µa(典型)quiescentcurrentfrom
3.3-vinput
•
break-之前-makeswitching
•
上电复位
•
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(开启)
和电流-limitvalueshavebeensetforthepeakandaveragecurrent
requirementsstatedinthepccardspecification,并优化成本.afastermaximumcurrentlimit
responsetimeistheonlydifferencebetweenthetps2223a,tps2224a,andtps2226aandthetps2223,
tps2224,andtps2226.
likethetps2214andtps2214aandthetps2216andtps2216a,Thisfamilyofdevicessupports独立
vpp/vccswitching;然而,thestandbyandinterface-modepinsarenotsupported.shutdownmodeisnow
supportedindependentlyonshdnaswellasintheserialinterface.optimizedforlowerpowerimplementation,
thetps2223adoesnotsupport12-vswitchingtovpp.seetheavailableoptionstableforpin-compatibledevice
信息.
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
pccard,cardbusaretrademarksofpcmcia(personalcomputermemorycardinternationalassociation).
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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