LT8620EMSE#TRPBF
ASTAAMAHA
Qiyaasta Korantada ee Wax-soo-gelinta ballaaran: 3.4V ilaa 65V
Ultralow Quiescent Current Burst Mode® Hawlgalka:
2.5μA IQ Habaynta 12VIN ilaa 3.3VOUT
Soo saarista Ripple <10mVP-P
Hawlgalka Isku-dhafan ee Hufnaanta Sare:
Waxtarka 94% ee 1A, 12VIN ilaa 5VOUT
Waxtarka 92% ee 1A, 12VIN ilaa 3.3VOUT
Degdega 30ns wakhtiga ugu yar ee wareejinta
Hoosudhaca Hooseeya ee Dhammaan Xaaladaha: 250mV at 1A
Wuxuu si badbaado leh ugu dulqaadanayaa qoyaanka soodhaliyaha ee culeyska xad dhaafka ah
EMI hoose
La hagaajin karo lana wada socon karo: 200kHz ilaa 2.2MHz
1V sax ah U sahlida marinka marinka
Magdhawga Guddaha
Soo saarida Bilawga Jilicsan iyo Dabagalka
16-Lead MSOP iyo 24-Lead 3mm × 5mm Xirmooyinka QFN ee Heerkulka Yar ee La Wanaajiyey
CODSIGA
Alaabooyinka Baabuurta iyo Warshadaha
Ujeeddada Guud Hoos-u-dhigga
Qalabka Korontada ee GSM
SHARAXA
LT®8620 waa isku xidhan, hufnaan sare, xawaarihiisa isku-dhafan ee isku-dhafan ee hoos-u-dejinta nidaamiyaha kaas oo aqbala kala duwanaansho koronto oo ballaadhan oo ilaa 65V ah, oo isticmaaleysa 2.5µAofquiescent hadda.Dabooleyaasha korantada ee dusha sare waxa lagu daraa dhammaan wareegyada lagama maarmaanka ah si loo yareeyo baahida qaybaha dibadda.Hawlgalka Burst Mode-ga hooseeya waxa uu sahlayaa wax-ku-oolnimada sare ilaa qulqulka wax soo saarka aad u hooseeya iyada oo wax-soo-saarku ka hooseeyo 10mVP-P.pin-ka SYNC waxa uu ogolaadaa in la isku xidho saacad dibadda ah.Magdhowga gudeed ee leh qaabka ugu sarreeya ee topology-ga ayaa u oggolaanaya isticmaalka inductor-ka yar-yar waxayna keentaa jawaab celin degdeg ah iyo xasilloonida wareegga wanaagsan.Biinanka EN/UV waxa uu leeyahay marin 1V oo sax ah waxaana loo isticmaali karaa barnaamijka VIN qufulka korantada yar ama in la xidho LT8620 hoos u dhigista sahayda hadda jirta ilaa 1µA.Capacitor-ka ku jira barnaamijyada pin-ka ee TR/SS heerka korantada wax soo saarka inta lagu jiro bilowga.Calanka PG wuxuu calaamadeeyaa marka VOUT ay ku jirto ± 9% ee tamarta wax soo saarka ee barnaamijka iyo sidoo kale xaaladaha cilladda.LT8620 waxaa lagu heli karaa 16-lead MSOP yar iyo 3mm × 5mmQFNpackages leh dabool daboolan oo iska caabbinta kulaylka hooseeya.
LT8620 waa monolithic, soo noqnoqoshada joogtada ah, qaabka hadda socda oo hoos u dhigaya beddelaha DC/DC.Oscillator-ka, oo leh inta jeer ee la dejiyay iyadoo la isticmaalayo iska caabin ku taal pin-ka RT, wuxuu daaraa daaran korantada sare ee gudaha bilawga saacad kasta.Hadda ku jira inductor-ka ayaa markaa kor u kacaya ilaa inta ugu sareysa ee isbarbardhigga hadda socda uu safro oo uu damiyo furaha korantada ee sare.Inductor-ka ugu sarreeya ee dabka ugu sarreeya uu damiyo waxaa kontaroolaya danabka ku jira qanjidhka VC gudaha ah.Cod-weyneeye khaladku wuxuu u adeegaa noodhka VC isagoo isbarbar dhigaya danabka biinka VFB iyo tixraac gudaha 0.97V.Marka culaysku kordho waxay keenaysaa hoos u dhac ku yimaadda danabka jawaab celinta marka loo eego tixraaca keenaya cod-weyneeye khaladka si uu kor ugu qaado danab VC ilaa inta celceliska inductor-ku uu la mid yahay hadda culayska cusub.Marka dab-damiska korantada sare uu damo, daaraha korontadu wuu shidma ilaa inta ay ka bilaabmayso wareegga saacadda xigta ama hadda inductor-ku uu ku dhaco eber.Haddii xaaladaha culeyska xad dhaafka ah ay keenaan in ka badan 3.9A oo ku qulqulaya furaha hoose, wareegga saacadda xiga ayaa dib loo dhigi doonaa ilaa inta hadda uu ku soo laabanayo heer badbaado leh.
Dulmar
LT3650 waa monolithic dhamaystiran, dhexe-awood, Li-Ionbattery charger, wax ka qabashada codsiyada tamarta sare leh xal isticmaala ugu yaraan qaybaha dibadda.IC waxay isticmaashaa 1Mhz-soo noqnoqoshada joogtada ah, celceliska qaabka hadda socda ee hoos u-dhis qaab dhismeedka.
LT3650 waxa uu ku daraa furaha 2A kaaso ay wado bootstrapped supplytom-ka sareynta waxtarka inta lagu jiro wareegyada dallacaadda.Kala duwanaansho ballaadhan oo gelin ah ayaa u oggolaanaysa hawlgalka inuu buuxsamo 9V ilaa 32V.Biinka xidhitaanka heerka saxda ah wuxuu ogolaanayaa in lagu daro shaqada UVLO iyadoo la adeegsanayo qaybiyaha iska caabinta fudud.IC waxa kale oo lagu ridi karaa hab xidhid hoose oo hadda jira, kaas oo eexda sahayda wax gelinta laga dhigay 15µA oo keliya.
LT3650 waxa ay ku daraysaa dhawr darajo oo ah xoriyada xakamaynta hadda.Kharashka ugu badan ee hadda jira ayaa la dejiyay iyadoo la isticmaalayo is-difaaciyaha dareenka hadda jira.Kharashka ugu badan ee biin-barnaamijeedka hadda jira wuxuu ogolaanayaa wax-is-beddelka firfircoon ee wakhtiga xaadirka ah ee batteriga.LT3650 waxa kale oo ay ku daraysaa nidaamka gelinta sahayda sifada xakamaynta xaddidan ee hadda jirta taas oo u adeegaysa kharashka batteriga hadda si loo daboolo shuruudaha guud ee nidaamka.
