Spot electronic IC chip TL431BIDBZR isekethe edityanisiweyo yeVoltage References

inkcazelo emfutshane:

I-TL431LI / TL432LI zezinye iindlela ze-pin-to-pin kwi-TL431 / TL432.I-TL43xLI inika uzinzo olungcono, i-drift ephantsi yokushisa (VI (dev)), kunye ne-reference reference ephantsi (Iref) yokuphucula ukuchaneka kwenkqubo.
Izixhobo ze-TL431 kunye ne-TL432 zizilawuli ze-shunt eziguquguqukayo ezintathu, kunye nozinzo oluchaziweyo lwe-thermal ngaphezulu kweemoto ezifanelekileyo, urhwebo, kunye noluhlu lobushushu lomkhosi.I-voltage ephumayo inokusekwa kuyo nayiphi na ixabiso phakathi kweVref (malunga ne-2.5 V) kunye ne-36 V, kunye ne-resistors ezimbini zangaphandle.Ezi zixhobo zine-impedance yemveliso ye-0.2 Ω.I-Active output circuitry inika uphawu olubukhali kakhulu lokujika, okwenza ezi zixhobo zithathe indawo ye-Zener diodes kwizicelo ezininzi, ezifana nolawulo lwe-onboard, ukunikezelwa kwamandla okuhlengahlengiswayo, kunye nokutshintsha umbane okhoyo.Isixhobo se-TL432 sinomsebenzi ofanayo kunye neenkcukacha zombane njengesixhobo se-TL431, kodwa sineepinothi ezahlukeneyo ze-DBV, i-DBZ, kunye neepakethe ze-PK.

Thumela i-imeyile kuthi Khuphela i-Datesheet

Iinkcukacha zeMveliso

Iithegi zeMveliso

Zombini izixhobo ze-TL431 kunye ne-TL432 zifundiswa kumabakala amathathu, kunye nokunyamezela kokuqala (ku-25 ° C) kwe-0.5%, 1%, kunye ne-2%, ye-B, A, kunye nebakala eliqhelekileyo, ngokulandelelanayo.Ukongeza, ukuphuma kwemveliso ephantsi ngokuchasene nobushushu kuqinisekisa uzinzo olulungileyo kulo lonke udidi lobushushu.
Izixhobo ze-TL43xxC zibonakaliswe ukusebenza ukusuka kwi-0 ° C ukuya kwi-70 ° C, izixhobo ze-TL43xxI zibonakaliswe ukusebenza ukusuka -40 ° C ukuya ku-85 ° C, kunye nezixhobo zeTL43xxQ zibonakaliswe ukusebenza ukusuka -40 ° C ukuya kwi-125 ° C. .

Iimpawu zeMveliso

UHLOBO	INKCAZO
Udidi	IiSekethe eziDityanisiweyo (ICs) I-PMIC - i-Voltage Reference
Mfr	Texas Instruments
Mfr	Texas Instruments
Uthotho	-
Iphakheji	Iteyiphu & neReel (TR) Sika iTape (CT) Digi-Reel®
SPQ	250T&R
Ubume beMveliso	Iyasebenza
Uhlobo lweReferensi	Shunt
Uhlobo Lwemveliso	Iyahlengahlengiswa
Voltage-Imveliso (Min/Fixed)	2.495V
Voltage-Imveliso (Ubukhulu)	36 V
Okwangoku -Isiphumo	100 mA
Ukunyamezelana	±0.5%
I-Coefficient yobushushu	-
Ingxolo - 0.1Hz ukuya 10Hz	-
Ingxolo - 10Hz ukuya 10kHz	-
Umbane - Ungeniso	-
Okwangoku - Unikezelo	-
Okwangoku - Cathode	700µA
Ubushushu bokusebenza	-40°C ~ 85°C (TA)
Uhlobo lokuNqamisa	INtaba engaphezulu
Ipakethe / Ityala	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	I-SOT-23-3
Inombolo yeMveliso esisiseko	TL431

Isiphumo

Indima yereferensi ye-voltage chips.

Kuluhlu olusebenzayo lwangoku, ukuchaneka kwesixhobo somthombo wombane wereferensi (ukutenxa kwexabiso lamandla ombane, ukukhukuliseka, isantya sohlengahlengiso lwangoku, kunye nezinye iiparamitha zesalathiso) kulunge ngakumbi kunediode yolawulo lwe-zen okanye isilawuli se-terminal emithathu, Ke isetyenziswa kwimfuno yombane wokuchaneka okuphezulu kwereferensi njengombane wesalathiso, ngokubanzi kwi-A/D, D/A, kunye nomthombo wamandla ombane ochaneke kakhulu, kodwa nezinye iisekethe zokujonga amandla ombane nazo zisebenzisa umthombo wombane wereferensi.

Ukuhlelwa

Ukuhlelwa kweetshiphu zereferensi yombane.
Ngokwereferensi yangaphakathi, ulwakhiwo lokuvelisa amandla ombane lwahlukile, ireferensi yombane yahlulahlulwe ngokwereferensi yombane we-bandgap kunye nereferensi yolawulo lombane lombane ngamacandelo amabini.Isakhiwo sereferensi ye-Gap gap ye-Band yi-front-biased PN junction kunye ne-voltage ehambelana ne-VT (umthamo we-thermal) kuthotho, usebenzisa i-coefficient yeqondo lokushisa elibi le-PN junction kunye ne-coefficient yokushisa efanelekileyo ye-VT offset ukuphumeza imbuyekezo yeqondo lokushisa.Isakhiwo sereferensi ye-voltage ye-regulator luluhlu loxhulumaniso lwe-sub-surface breakdown regulator kunye ne-PN junction, usebenzisa i-coefficient yokushisa echanekileyo yomlawuli kunye ne-coefficient yeqondo lokushisa elibi le-PN junction ukurhoxisa imbuyekezo yeqondo lokushisa.Ukuqhekeka komphezulu ongaphantsi kunceda ukunciphisa ingxolo.I-voltage yereferensi yereferensi ye-tube voltage iphezulu (malunga ne-7V);i-voltage yereferensi yereferensi yombane we-bandgap iphantsi, ngoko ke le yokugqibela isetyenziswa ngokubanzi apho kufuneka umbane ophantsi.
Ngokuxhomekeke kwisakhiwo sesicelo sangaphandle, iireferensi ze-voltage zihlulwe zibe ngamacandelo amabini: uchungechunge kunye nokuhambelana.Xa isetyenzisiwe, iireferensi ze-voltage ezilandelelanayo zifana nezixhobo zamandla ezilawulwa zi-terminal ezintathu, apho i-voltage yereferensi idityaniswe ngokulandelelana kunye nomthwalo;iireferensi zombane ohambelanayo ziyafana nezilawuli zombane, apho umbane wereferensi uqhagamshelwe ngokuhambelana nomthwalo.Zombini iireferensi zombane webhendi kunye neereferensi zombane wetyhubhu zinokusetyenziswa kolu lungelelwaniso lubini.I-advanteji yeereferensi ze-voltage series kukuba zifuna kuphela unikezelo lwegalelo ukubonelela ngokuqhubekayo kwe-chip kunye nokubonelela ngomthwalo wangoku xa umthwalo ukhona;iimbekiselo zombane onxuseneyo zifuna iseti ecalanye yangoku ukuba ibe nkulu kunesixa sangoku esithe cwaka setshiphu kunye nowona mthwalo uphezulu wangoku kwaye awufanelekanga usetyenziso lwamandla aphantsi.Izinto eziluncedo kwiimbekiselo zombane onxuseneyo kukuba zinomkhethe ngoku, zinokubonelela kuluhlu olubanzi lwamandla ombane, kwaye zilungele ukusetyenziswa njengezalathisi zombane omisiweyo.

Ukukhetha

Ukhetho lothotho lwereferensi yetshiphu yombane kunye netshiphu yereferensi yombane onxuseneyo
Ireferensi ye-voltage yechungechunge inee-terminals ezintathu: i-VIN, i-VOUT, kunye ne-GND, efana ne-linear regulator, kodwa kunye nesiphumo esisezantsi kunye nokuchaneka okuphezulu kakhulu.Iireferensi ze-voltage ze-Series zidibene ngokwesakhiwo kuchungechunge kunye nomthwalo (Umfanekiso 1) kwaye zingasetyenziswa njenge-resistor elawulwa yi-voltage ephakathi kwe-VIN kunye ne-VOUT terminals.Ngokulungelelanisa ukuchasana kwayo kwangaphakathi, umehluko phakathi kwexabiso le-VIN kunye nokuhla kwe-voltage kwi-resistor yangaphakathi (elingana ne-reference voltage kwi-VOUT) igcinwe izinzile.Njengoko okwangoku kuyimfuneko ukuvelisa ukuhla kwamandla ombane, isixhobo kufuneka sitsale inani elincinci langoku elithe cwaka ukuqinisekisa ukulawulwa kwamandla ombane ngaphandle komthwalo.Iireferensi zombane eziqhagamshelwe ngothotho zinezi mpawu zilandelayo.
- I-voltage yokubonelela (VCC) kufuneka ibe phezulu ngokwaneleyo ukuqinisekisa ukuhla kwamandla ombane okwaneleyo kwii-resistors zangaphakathi, kodwa i-voltage ephezulu kakhulu inokusonakalisa isixhobo.
- Isixhobo kunye nephakeji yayo kufuneka ikwazi ukutshabalalisa amandla e-series regulator tube.
- Ngaphandle komthwalo, ukuchithwa kwamandla kuphela ngumbane ophelileyo wereferensi yombane.
- Iireferensi zombane wothotho ngokubanzi zineempazamo zokuqala ezingcono kunye ne-coefficients yobushushu kunereferensi yombane ohambelanayo.

Isalathiso sombane esinxuseneyo sineetheminali ezimbini: OUT kunye ne-GND.Kuyafana nomgaqo we-voltage regulator diode kodwa ineempawu ezingcono zolawulo lombane, ezifana ne-voltage regulator diode efuna isixhasi sangaphandle kwaye isebenza ngokuhambelana nomthwalo (Umfanekiso 2).Isalathiso sombane onxuseneyo sinokusetyenziswa njengomthombo wangoku olawulwa ngamandla ombane odityaniswe phakathi kwe-OUT kunye ne-GND, ngokulungelelanisa umsinga wangaphakathi ukuze umahluko phakathi kombane wobonelelo kunye nokuhla kwamandla ombane kwi-resistor R1 (elingana nombane wesalathiso kwi-OUT) uhlala uhleli. ezinzile.Beka enye indlela, ireferensi yohlobo oluhambelanayo lombane igcina i-voltage engaguqukiyo kwi-OUT ngokugcina isimbuku somthwalo wangoku kunye nokhoyo oqukuqelayo kwireferensi yombane rhoqo.Iimbekiselo zohlobo olunxuseneyo zinezi mpawu zilandelayo.
- Ukukhethwa kwe-R1 efanelekileyo kuqinisekisa ukuba iimfuno zamandla zifezekisiwe kwaye ireferensi yohlobo lwe-parallel voltage ayinamda kwi-voltage ephezulu yokubonelela.
- Ubuninzi bangoku obubonelelwa ngonikezelo buzimeleyo kumthwalo kunye nokuhanjiswa kwangoku okuhamba kumthwalo kunye nereferensi kufuneka ivelise ukuhla kwamandla ombane afanelekileyo kwi-resistor R1 ukugcina i-voltage ye-OUT eqhubekayo.
- Njengezixhobo ezilula ze-2-terminal, iireferensi zombane onxuseneyo zinokumiselwa kwiisekethe zenoveli ezifana nezilawuli zombane ongalunganga, izilawuli zomhlaba ezidadayo, iisekethe zokunqunqa, kunye neesekethe zokukhawulela.
- Iireferensi zombane onxuseneyo zihlala zinomgangatho ophantsi wokusebenza kunothotho lweereferensi zombane.
Nje ukuba umahluko phakathi koluhlu kunye neereferensi zombane ohambelanayo uqondwa, esona sixhobo sifanelekileyo sinokukhethwa kwisicelo esithile.Ukufumana esona sixhobo sifanelekileyo, kungcono ukuqwalasela zombini uthotho kunye neereferensi ezihambelanayo.Nje ukuba iiparamitha zazo zombini iindidi zibalwe ngokuthe ngqo, uhlobo lwesixhobo sinokumiselwa kwaye ezinye iindlela zobungqina zinikiwe apha.
- Ukuba ukuchaneka kokuqala okungaphezulu kwe-0.1% kunye ne-coefficient yokushisa ye-25ppm iyafuneka, ireferensi yohlobo lwe-voltage yechungechunge kufuneka ikhethwe ngokubanzi.
- Ukuba umbane ophantsi osebenzayo uyafuneka, ngoko kufuneka kukhethwe ireferensi yombane ohambelanayo.
- Ukhathalelo kufuneka luthatyathwe xa usebenzisa iireferensi zombane onxuseneyo kunye nombane wobonelelo olubanzi okanye imithwalo emikhulu eguqukayo.Qinisekisa ukubala ixabiso elilindelekileyo lamandla achithwayo, elinokuthi libe phezulu kakhulu kunereferensi yoluhlu lwamandla ombane kunye nokusebenza okufanayo (jonga umzekelo ongezantsi).
- Kwizicelo apho i-voltage yokubonelela ingaphezulu kwe-40V, ireferensi yombane ohambelanayo inokuba yodwa inketho.
- Iireferensi zombane onxuseneyo zijongwa ngokubanzi xa kusakhiwa izilawuli zombane ezingakhiyo, izilawuli zomhlaba ezidadayo, iisekethe zokusika, okanye imida yeesekethe.

Malunga neMveliso

I-TL431LI / TL432LI zezinye iindlela ze-pin-to-pin kwi-TL431 / TL432.I-TL43xLI inikezela ngokuzinza okungcono, i-drift ephantsi yokushisa (VI (dev)), kunye ne-reference reference yangoku (Iref) yokuphucula ukuchaneka kwenkqubo.
Izixhobo ze-TL431 kunye ne-TL432 zizilawuli ze-shunt eziguquguqukayo ezintathu, kunye nozinzo oluchaziweyo lwe-thermal ngaphezulu kweemoto ezifanelekileyo, urhwebo, kunye noluhlu lobushushu lomkhosi.I-voltage ephumayo inokusekwa kuyo nayiphi na ixabiso phakathi kweVref (malunga ne-2.5 V) kunye ne-36 V, kunye ne-resistors ezimbini zangaphandle.Ezi zixhobo zine-impedance yemveliso eqhelekileyo ye-0.2 Ω.Ukujikeleza okusebenzayo okukhuphayo kunika uphawu olubukhali kakhulu lokujika, lwenza ezi zixhobo zithathe indawo yeZener diode kwizicelo ezininzi, ezinje ngolawulo lwebhodi, izixhobo zombane ezilungelelanisiweyo, kunye nokutshintsha umbane.Isixhobo se-TL432 sinomsebenzi ofanayo kunye neenkcukacha zombane njengesixhobo se-TL431, kodwa sineepinothi ezahlukeneyo ze-DBV, i-DBZ, kunye neepakethe ze-PK.
Zombini izixhobo ze-TL431 kunye ne-TL432 zifundiswa kumabakala amathathu, kunye nokunyamezela kokuqala (ku-25 ° C) kwe-0.5%, 1%, kunye ne-2%, ye-B, A, kunye nebakala eliqhelekileyo, ngokulandelelanayo.Ukongeza, ukuphuma kwemveliso ephantsi ngokuchasene nobushushu kuqinisekisa uzinzo olulungileyo kulo lonke udidi lobushushu.
Izixhobo ze-TL43xxC zibonakaliswe ukusebenza ukusuka kwi-0 ° C ukuya kwi-70 ° C, izixhobo ze-TL43xxI zibonakaliswe ukusebenza ukusuka -40 ° C ukuya ku-85 ° C, kunye nezixhobo zeTL43xxQ zibonakaliswe ukusebenza ukusuka -40 ° C ukuya kwi-125 ° C. .

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