ic三極管,開關(guān)芯片lm2596s-adj

品牌 ns 型號 lm2596s-adj
種類 溫控式 額定電壓 5-40(v)
額定電流 3(a) 接觸電阻 5(ω)
絕緣電阻 50(mω) 產(chǎn)品性質(zhì) 新品
營銷方式 現(xiàn)貨 營銷

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類型:開關(guān)三極管

型號:lm2596(lm2596s-3.3/5.0/12/adj, lm2596sx-3.3/5.0/12/adj 等多種尾數(shù))

封裝:to-263/to-220

品牌:ns

數(shù)量:

 

lm2596描述:

simpleswitcher
powerconverter150khz
3astep-downvoltageregulator

 

generaldescription
thelm2596seriesofregulatorsaremonolithicintegrated
circuitsthatprovidealltheactivefunctionsforastep-down
(buck)switchingregulator,capableofdrivinga3aloadwith
excellentlineandloadregulation.thesedevicesareavail-
ableinfixedoutputvoltagesof3.3v,5v,12v,andanadjust-
ableoutputversion.
requiringaminimumnumberofexternalcomponents,these
regulatorsaresimpletouseandincludeinternalfrequency
?
compensation
,andafixed-frequencyoscillator.
thelm2596seriesoperatesataswitchingfrequencyof
150khzthusallowingsmallersizedfiltercomponentsthan
whatwouldbeneededwithlowerfrequencyswitchingregu-
lators.availableinastandard5-leadto-220packagewith
severaldifferentleadbendoptions,anda5-leadto-263
surfacemountpackage.
astandardseriesofinductorsareavailablefromseveral
differentmanufacturersoptimizedforusewiththelm2596
series.thisfeaturegreatlysimplifiesthedesignof
switch-modepowersupplies.
!
otherfeaturesincludeaguaranteed
4%toleranceonout-
putvoltageunderspecifiedinputvoltageandoutputload
!
conditions,and
15%ontheoscillatorfrequency.external
shutdownisincluded,featuringtypically80??astandbycur
rent.selfprotectionfeaturesincludeatwostagefrequency
reducingcurrentlimitfortheoutputswitchandanover
temperatureshutdownforcompleteprotectionunderfault
conditions.