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描述
1
4
2
3
5
V
I
C2*
2 x 4.7 F
陶瓷的
(必需的)
C1*
100 F
Electrolytic
(必需的)
C3*
100 F
Electrolytic
(必需的)
地
地
V
O
PTN78000A
(t
运算 v
iew)
*see 这 为 电容 推荐.
应用 信息
#R
设置
是 必需的 至 调整 这 输出 电压 更小的 比 -3 v. 看 这 为 值.
应用 信息
ST
ANDARD APPLICA
TION
R
S
E
T
#
1 %, 0.05 w
(必需的)
+
PTN78000A
SLTS246A–APRIL2005–REVISEDMAY2005
1.5-一个,宽-inputadjustablebuck-boostswitchingregulator
•
一般-目的,industrialcontrols,
•
1.5-aoutputcurrent
hvacsystems,testandmeasurement,
•
宽-inputvoltage
medicalinstrumentation,交流/dcadaptors,
(7vto29v)
vehicles,marine,andavionics
•
宽-outputvoltageadjust
(–15vto–3v)
•
highefficiency(upto84%)
•
OutputCurrentLimit
•
OvertemperatureShutdown
•
operatingtemperature:–40°cto85°c
•
表面-mountpackageavailable
theptn78000aisaseriesofhigh-效率,buck-boostintegratedswitchingregulators(isr),thatrepresent
thethirdgenerationintheevolutionofthept78nr100seriesofproducts.innewdesigns,itshouldbe
consideredinplaceofthept78nr100seriesofsinglein-linepin(sip)产品.theptn78000aissmallerand
lighterthanitspredecessor,andhaseithersimilarorimprovedelectricalperformancecharacteristics.这
caseless,翻倍-sidedpackagealsoexhibitsimprovedthermalcharacteristics,andiscompatiblewithti's
roadmapforrohsandlead-freecompliance.
operatingfromawide-inputvoltagerange,theptn78000aprovideshigh-效率,积极的-至-negativevoltage
conversionforloadsofupto1.5a.theoutputvoltageissetusingasingleexternalresistor,andmaybesetto
anyvaluewithintherange,–15vto–3v.
theptn78000ahasundervoltagelockout,andissuitedtoawidevarietyofgeneral-purposeapplicationsthat
operateoff12-v,24-v,ortightlyregulated28-vdcpower.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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