iduka rimwe ryibikoresho bya elegitoronike TLV1117LV33DCYR SOT223 umugenzuzi chip ic igizwe numuzunguruko

iduka rimwe ryibikoresho bya elegitoronike TLV1117LV33DCYR SOT223 umugenzuzi chip ic integuro yumuzingi Ibiranga Ishusho

ibisobanuro bigufi:

Urukurikirane rwa TLV1117LV rwumurongo muto (LDO) ni umurongo winjiza wa voltage ntoya ya verisiyo izwi cyane ya TLV1 117.
TLV1117LV nigikoresho gito cyane gifite ingufu zikoresha inshuro 500 munsi ya quiescent currentthan gakondo 11 17 ya voltage igenzura, bigatuma igikoresho gikwiranye na progaramu zitegeka amashanyarazi make cyane.Umuryango wa TLV1117LV ya LDOS isalso itajegajega hamwe na 0 mA yumutwaro wumuvuduko: ntamutwaro muto usabwa, bigatuma igikoresho gifasha mugukoresha porogaramu aho umugenzuzi muspower imizigo mito cyane mugihe cyo kwihagararaho hiyongereyeho amashanyarazi kumurongo wa 1 A mugihe cya normaoperation.TLV1117LV itanga umurongo mwiza kandi ugatwara imikorere yinzibacyuho, bikavamo smamagnitude cyane munsi yumusozo hamwe na overhoots ya outputvoltage mugihe umutwaro wibisabwa uhinduka kuva munsi ya 1 MA kugeza kuri 500 mA.

Ohereza imeri kuri twe Kuramo urupapuro

Ibicuruzwa birambuye

Ibicuruzwa

Igicucu cyuzuye hamwe na amplifier yibeshya itanga 1.5% byukuri.Umubare munini cyane wo gutanga-kwangwa (PSRR) ushoboza gukoresha igikoresho cya postegulation nyuma yo guhinduranya ibintu.Ibindi bintu bifite agaciro birimo urusaku ruto rusohoka hamwe na tvoltage nkeya.
Igikoresho cyishyurwa imbere kugirango gihamye hamwe na 0-Ω bihwanye na seriveri irwanya (ESR).Izi nyungu zingenzi zituma hakoreshwa ikiguzi-cyiza, gito-ceramic capacator.Ubushobozi buhendutse bufite ubushobozi bwo kubogama burenze urugero no kugabanya ubushyuhe burashobora kandi gukoreshwa iyo ubishaka Urutonde rwa TLV1117LV ruraboneka muri pake ya SOT-223.

Ibiranga ibicuruzwa

UBWOKO	GUSOBANURIRA
Icyiciro	Inzira zuzuye (IC) PMIC - Igenzura rya voltage - Umurongo
Mfr	Ibikoresho bya Texas
Urukurikirane	-
Amapaki	Tape & Reel (TR) Kata Tape (CT) Digi-Reel®
SPQ
Imiterere y'ibicuruzwa	Bikora
Iboneza Ibisohoka	Ibyiza
Ubwoko Ibisohoka	Bimaze gukosorwa
Umubare w'abashinzwe kugenzura	1
Umuvuduko - Iyinjiza (Max)	5.5V
Umuvuduko - Ibisohoka (Min / Bishyizweho)	3.3V
Umuvuduko - Ibisohoka (Max)	-
Umuvuduko w'amashanyarazi (Max)	1.3V @ 800mA
Ibiriho - Ibisohoka	1A
Ibiriho - Quiescent (Iq)	100 µA
PSRR	75dB (120Hz)
Kugenzura Ibiranga	-
Ibiranga Kurinda	Kurenza Ibiriho, Kurenza Ubushyuhe
Gukoresha Ubushyuhe	-40 ° C ~ 125 ° C.
Ubwoko bwo Kuzamuka	Umusozi
Ipaki / Urubanza	TO-261-4, TO-261AA
Ibikoresho byo gutanga ibikoresho	SOT-223-4
Umubare wibicuruzwa shingiro	TLV1117

LDO?

LDO, cyangwa igenzura ritoya, ni umurongo muto ugabanuka.Ibi bifitanye isano numurongo gakondo ugenzura.Imirongo gakondo igenzura, nka 78XX yuruhererekane rwa chip, isaba voltage yinjiza kuba byibuze 2V ~ 3V hejuru yumubyigano usohoka, bitabaye ibyo, ntabwo bizakora neza.Ariko rimwe na rimwe, ibintu nkibi birakabije, nka 5V kugeza kuri 3.3V, itandukaniro rya voltage hagati yinjiza nibisohoka ni 1.7v gusa, ibyo bikaba bitujuje ibyangombwa byakazi byabashinzwe kugenzura imirongo gakondo.Mu gusubiza iki kibazo, abakora chip bakoze chip yo guhinduranya ubwoko bwa LDO.
LDO ni umurongo ugenzura umurongo ukoresha transistor cyangwa umuyoboro-ngirakamaro (FET) ukorera mukarere kayo kuzura kugirango ubyare ingufu zasohotse mugukuramo ingufu zirenze ziva mumashanyarazi yinjira mubisabwa.Umuvuduko w'amashanyarazi wa voltage ni itandukaniro ntarengwa riri hagati yinjiza n’umubyigano usohoka usabwa kugirango umuyobozi agumane ingufu zavuye muri 100mV hejuru cyangwa munsi yagaciro kayo.Ibisohoka byiza voltage LDO (hasi yabataye) mubisanzwe ikoresha imbaraga za tristoriste (izwi kandi nkigikoresho cyo kohereza) nka PNP.iyi transistor yemerewe kwiyuzuzamo kugirango uyigenzure ashobora kugira voltage nkeya cyane, mubisanzwe hafi 200mV;ugereranije, ibisanzwe byumurongo ugenzura ukoresheje NPN ikomatanya ingufu za transistors zifite guta hafi ya 2V.Ibisohoka bibi LDO ikoresha NPN nkigikoresho cyayo cyo gutanga kandi ikora muburyo busa nigikoresho cya PNP cyibisohoka byiza LDO.

Iterambere rishya rikoresha MOS power transistors, ishoboye gutanga voltage ntoya.Hamwe nimbaraga MOS, igabanuka ryumubyigano wonyine unyuze mumugenzuzi uterwa na ON irwanya imizigo yumuriro wibikoresho bitanga amashanyarazi.Niba umutwaro ari muto, igitonyanga cya voltage cyakozwe murubu buryo ni milivolts nkeya.
DC-DC bisobanura DC kuri DC (guhindura indangagaciro zitandukanye za DC) kandi igikoresho icyo aricyo cyose cyujuje iki gisobanuro gishobora kwitwa DC-DC ihindura, harimo na LDOs, ariko ijambo rusange ni uguhamagarira ibikoresho aho DC kugeza DC bigerwaho muguhindura .
LDO igereranya voltage nkeya, isobanurwa mu gika kimwe: Igiciro gito, urusaku ruke, hamwe numuyoboro muke wumuvuduko ukabije wumurongo muto (LDO) umurongo ugenzura nibyiza byingenzi.Irasaba kandi ibice bike byo hanze, mubisanzwe ubushobozi bumwe cyangwa bubiri bwa bypass.Abagenzuzi bashya ba LDO barashobora kugera kubisobanuro bikurikira: urusaku rusohoka rwa 30μV, PSRR ya 60dB, hamwe numuyoboro wa quiescent wa 6μA (TI ya TPS78001 igera kuri Iq = 0.5uA), hamwe numuvuduko wa voltage wa 100mV gusa (TI yakozwe na LDO nyinshi hamwe na LDO isabwa 0.1mV).Impamvu nyamukuru ituma LDO igenzura umurongo ishobora kugera kuri uru rwego rwimikorere ni uko umuyoboro uyobora muri bo ari umuyoboro wa P-MOSFET, mugihe abagenzuzi basanzwe bakoresha umurongo wa PNP.umuyoboro wa P-MOSFET ikoreshwa na voltage kandi ntisaba amashanyarazi, bityo igabanya cyane amashanyarazi yakoreshejwe nigikoresho ubwacyo;kurundi ruhande, mumuzunguruko hamwe na tristoriste ya PNP, irinde PNP Kurundi ruhande, mumuzunguruko hamwe na tristoriste ya PNP, kugabanuka kwa voltage hagati yinjiza nibisohoka ntibigomba kuba bike cyane kugirango birinde transistor ya PNP kwiyuzuza no kugabanya ubushobozi bwo gusohora;Umuvuduko wa voltage unyuze kuri P-umuyoboro MOSFET ugereranije hafi nibicuruzwa biva hanze hamwe na on-resistance.Kubera ko on-resistance ya MOSFET ari nto cyane, igitonyanga cya voltage hejuru yacyo ni gito cyane.

Niba ibyinjira nibisohoka voltage byegeranye cyane, nibyiza gukoresha LDO igenzura, ishobora kugera kubikorwa byiza cyane.Kubwibyo, LDO igenzura ikoreshwa cyane mubisabwa aho ingufu za batiri ya lithium-ion ihindurwamo ingufu za 3V zisohoka.Nubwo ingufu za bateri zidakoreshwa kumyaka icumi yanyuma, umugenzuzi wa LDO arashobora gukomeza kwemeza igihe kirekire cyo gukora hamwe n urusaku ruke.
Niba ibyinjijwe nibisohoka voltage idafunze cyane, guhinduranya DCDC bigomba gutekerezwa kuko, nkuko bigaragara mumahame yavuzwe haruguru, ibyinjira byinjira muri LDO bingana nibisohoka, kandi niba igitonyanga cya voltage ari kinini, ingufu zikoreshwa muri LDO nini cyane kandi ntabwo zikora neza.
Abahindura DC-DC barimo intambwe-hejuru, intambwe-hasi, intambwe-hejuru / hasi, hamwe no guhinduranya imirongo.ibyiza bya DC-DC bihindura ni imikorere ihanitse, hamwe nubushobozi bwo gusohora amashanyarazi maremare hamwe no gutuza kwinshi.Hamwe no kwiyongera kwishyira hamwe, byinshi bishya DC-DC bihindura bisaba gusa inductors nkeya zo hanze hamwe na capacitori.Nyamara, ibisohoka pulsation hamwe no guhinduranya urusaku rwaba bagenzuzi b'amashanyarazi ni byinshi kandi igiciro ni kinini.
Mu myaka yashize, hamwe niterambere ryikoranabuhanga rya semiconductor, inductors-mount-inductor, capacator, hamwe na chip yamashanyarazi ihuriweho cyane byabaye bito kandi bito mubiciro.Kurugero, kubintu byinjiza voltage ya 3V, ibisohoka 5V / 2A birashobora kuboneka ukoresheje kuri chip NFET.Icyakabiri, kubintu bito kugeza hagati yingufu zikoreshwa, igiciro gito, paki ntoya irashobora gukoreshwa.Mubyongeyeho, niba guhinduranya inshuro byiyongereye kuri 1MHz, birashoboka kugabanya ibiciro no gukoresha inductors ntoya na capacator.Bimwe mubikoresho bishya nabyo byongeramo ibintu byinshi bishya nko gutangira byoroshye, kugabanya ubu, PFM, cyangwa guhitamo uburyo bwa PWM.
Muri rusange, guhitamo DCDC yo kuzamura ni ngombwa.Ku mafranga, guhitamo DCDC cyangwa LDO ni ikigereranyo mubijyanye nigiciro, imikorere, urusaku, nibikorwa.

Itandukaniro ryingenzi

LDO ni micro-power nkeya yo guta umurongo ugenzura mubisanzwe ifite urusaku ruke cyane hamwe nigipimo kinini cyo gutanga amashanyarazi (PSRR).
LDO ni igisekuru gishya cyoguhuza imiyoboro yumuzunguruko, itandukanye cyane nigeragezwa kuko LDO ni sisitemu ntoya kuri chip (SoC) hamwe no kwikenura cyane.Irashobora gukoreshwa muburyo bukuru bwo kugenzura imiyoboro, chip yahujije MOSFETs hamwe numurongo muke cyane kumurongo-wo-kurwanya, diode ya Schottky, ibyitegererezo byikitegererezo, ibyuma bigabanya imbaraga za voltage, hamwe nizindi nzitizi zibyuma, kandi bifite uburinzi burenze urugero, ubushyuhe burenze urugero kurinda, isoko yerekana neza, amplifier itandukanye, gutinda, nibindi PG ni igisekuru gishya cya LDO, hamwe na buri gisohoka leta yipimishije, gutinza imikorere yumuriro wumutekano, birashobora kandi kwitwa Power Nziza, ni ukuvuga "imbaraga nziza cyangwa imbaraga zihamye" .

imiterere n'ihame

Imiterere n'ihame ry'ibikorwa.
Imiterere ya LDO ntoya yataye umurongo ugenzura cyane cyane harimo gutangiza umuzenguruko, guhora utanga isoko kubogama, gushoboza umuzenguruko, ibice byo guhindura, inkomoko yerekana, amakosa yongerera imbaraga, imiyoboro irwanya ibitekerezo, umuzenguruko wo kurinda, nibindi. Ihame ryibanze ryakazi ni nkibi bikurikira: sisitemu ifite ingufu, niba ifasha pin iri murwego rwohejuru, umuzunguruko utangira gutangira, amasoko ahoraho yumuzunguruko utanga kubogama kumuzunguruko wose, kandi inkomoko yumuriro wa voltage yashizweho vuba, ibisohoka bizamuka ubudahwema hamwe ninjiza mugihe ibisohoka bigiye kugera ku gaciro kagenwe, ibisohoka byisubiramo voltage yabonetse numuyoboro wibitekerezo nabyo byegereye agaciro ka voltage agaciro, muriki gihe amakosa amplifier azasohoza ibitekerezo bya voltage hamwe na voltage yerekana hagati ya Ntoya Ikimenyetso cyamakosa cyongerewe imbaraga, hanyuma kongerwaho imbaraga nigitekerezo cyo guhinduranya ibisohoka, bityo bigatanga ibitekerezo bibi kugirango tumenye neza ko ibisohoka voltage ihagaze neza kubiciro byagenwe.Mu buryo busa nabwo, niba ibyinjijwe na voltage bihinduka cyangwa ibisohoka bihinduka, uyu muzingi ufunze-uzunguruka bizagumya gusohora voltage idahindutse.