D−8 PW−8
www.ti.com
FEATURESAPPLICATIONS
1
2
3
4
5
6
7
8
vss
类 UVLO
det
RTN
PG
VDD
ILIM
1
2
3
4
5
6
7
8
vss
类 n/c
det
RTN
PG
VDD
ILIM
tps2375/77
(顶部 查看)
TPS2376
(顶部 查看)
描述
TPS2375
SMAJ58A
数据 至
以太网 phy
VDD
vss
类
det
RTN
PG
数据 至
以太网
PHY
1
3
6
4
5
7
8
至 直流/直流
变频器
ILIM
2
RJ−45
DF01S
2 地点
备注: 类 3 pd 描绘.
pg 上拉 电阻 是 可选.
TX
对
rx
对
备用
对
备用
对
v
dd
输入
电流
v
RTN
v
检测 Classify
电源 向上 &放大器; 涌流
类 3
(pg-rtn)
100
k
100 v
100
f,
右
(det)
24.9 k
1 %
右
(ilim)
178 k
1 %
右
(iclass)
357
1 %
100 v
0.1
f,
10 %
备注:全部 voltages 与 尊重 至 vss.
电流
TPS2375
TPS2376
TPS2377
SLVS525A–APRIL2004–REVISEDSEPTEMBER2004
ieee802.3afpoepowereddevicecontrollers
•
VoIPPhones
•
fullysupportsieee802.3afspecification
•
WLANAccessPoints
•
integrated0.58-
Ω
,100-v,低-sideswitch
•
SecurityCameras
•
15-kvsystemlevelesdcapable
•
InternetAppliances
•
supportsuseoflow-costsiliconrectifiers
•
POSTerminals
•
ProgrammableInrushCurrentControl
•
fixed450-macurrentlimit
•
FixedandAdjustableUVLOOptions
•
开漏极,电源-goodreporting
•
OvertemperatureProtection
•
工业温度:-40
°
Cto85
°
c
•
8-pinsoicandtssoppackages
theseeasy-至-use8-pinintegratedcircuitscontainallofthefeaturesneededtodevelopanieee802.3af
compliantpowereddevice(pd).thetps2375familyisasecondgenerationpdc(pdcontroller)特色
100-vratingsandatrueopen-排水管,电源-goodfunction.
inadditiontothebasicfunctionsofdetection,classificationandundervoltagelockout(uvlo),thesecontrollers
includeanadjustableinrushlimitingfeature.thetps2375has802.3afcompliantuvlolimits,thetps2377has
遗留问题
uvlolimits,andthetps2376hasaprogrammableuvlowithadedicatedinputpin.
thetps2375familyspecificationsincorporateavoltageoffsetof1.5vbetweenitslimitsandtheieee802.3af
specificationstoaccommodatetherequiredinputdiodebridgesusedtomakethepdpolarityinsensitive.
additionalresourcescanbefoundonthetiwebsitewww.ti.com.
figure1.typicalapplicationcircuitandstartupwaveforms
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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