indawo yokuma enye yamacandelo e-elektroniki TLV1117LV33DCYR SOT223 isilawuli se-chip ic sesekethe edibeneyo

ivenkile ene-one-stop yamacandelo e-elektroniki TLV1117LV33DCYR SOT223 isilawuli se-chip ic esidityanisiweyo sesekethe Umfanekiso ofakiweyo

inkcazelo emfutshane:

Uluhlu lwe-TLV1117LV lwe-low-dropout (LDO) i-linearegulators yinguqulo ye-voltage yegalelo eliphantsi lolawulo lombane oludumileyo lwe-TLV1 117.
I-TLV1117LV sisixhobo esinamandla aphantsi ngokugqithisileyo esisebenzisa amaxesha angama-500 ngaphantsi kwe-voltage yangoku kunezilawuli zombane zesiqhelo eziyi-11 17, esenza isixhobo silungele usetyenziso olugunyazisa ukulinda okuphantsi kakhulu kwangoku.Intsapho ye-TLV1117LV ye-LDOS nayo izinzile kunye ne-0 mA yomthwalo wangoku: akukho mfuneko yomthwalo omncinci, okwenza isixhobo sikhetheke ngokufanelekileyo kwizicelo apho umlawuli muspower imithwalo emincinci kakhulu ngexesha lokulinda ukongeza imisinga emikhulu kwi-odolo ye-1 A ngexesha le-normaoperation.I-TLV1117LV inikezela ngomgca ogqwesileyo kunye nomthwalo wokusebenza okwexeshana, okukhokelela ekubeni kunciphe kakhulu amagqabi angaphantsi kunye nee-overshoots zevoltage ephumayo xa imfuno yangoku yomthwalo itshintsha ukusuka ngaphantsi kwe-1 MA ukuya ngaphezulu kwe-500 mA.

Thumela i-imeyile kuthi Khuphela i-Datesheet

Iinkcukacha zeMveliso

Iithegi zeMveliso

I-bandgap echanekileyo kunye ne-amplifier yephutha inikeza ukuchaneka kwe-1.5%.Umlinganiselo ophezulu kakhulu wokulahlwa konikezelo lwamandla (PSRR) wenza ukuba kusetyenziswe isixhobo sopostegulation emva komlawuli wokutshintsha.Ezinye izinto ezixabisekileyo ziquka imveliso ephantsi ingxolo kunye ne-low-dropou tvoltage.
Isixhobo sihlawulelwa ngaphakathi ukuze sibe stablewith 0-Ω elinganayo series resistance (ESR) capacitors.Ezi zibonelelo ziphambili zenza ukuba kusetyenziswe i-capacitor ye-ceramic engabizi kakhulu, encinci.Ii-capacitors ezinexabiso eliphezulu ezine-voltage ephezulu ye-bias kunye nokuhla kobushushu nazo zinokusetyenziswa ukuba ziyafunwaUthotho lwe-TLV1117LV luyafumaneka kwiphakheji ye-SOT-223.

Iimpawu zeMveliso

UHLOBO	INKCAZO
Udidi	IiSekethe eziDityanisiweyo (ICs) I-PMIC - IziLawuli zeVoltage - Linear
Mfr	Texas Instruments
Uthotho	-
Iphakheji	Iteyiphu & neReel (TR) Sika iTape (CT) Digi-Reel®
SPQ
Ubume beMveliso	Iyasebenza
Uqwalaselo Lwemveliso	Okuhle
Uhlobo Lwemveliso	Ilungisiwe
Inani labaLawuli	1
I-Voltage-Input (Ubukhulu)	5.5V
Voltage-Imveliso (Min/Fixed)	3.3V
Voltage-Imveliso (Ubukhulu)	-
Ukuyeka umbane (Ubukhulu)	1.3V @ 800mA
Okwangoku -Isiphumo	1A
Okwangoku - Ipholile (Iq)	100µA
PSRR	75dB (120Hz)
Iimpawu zokulawula	-
Iimpawu zoKhuselo	Ngaphezulu Kwangoku, Ngaphezulu Kweqondo Lobushushu
Ubushushu bokusebenza	-40°C ~ 125°C
Uhlobo lokuNqamisa	INtaba engaphezulu
Ipakethe / Ityala	UKUYA-261-4, UKUYA-261AA
Supplier Device Package	I-SOT-223-4
Inombolo yeMveliso esisiseko	TLV1117

Umlawuli we-LDO?

I-LDO, okanye i-low dropout regulator, i-low dropout linear regulator.Oku kunxulumene nomlawuli womgca wemveli.Izilawuli zomgca eziqhelekileyo, ezifana ne-78XX uchungechunge lwee-chips, zifuna ukuba i-voltage yegalelo ibe ubuncinane i-2V ~ 3V ephezulu kune-voltage ephumayo, ngaphandle koko, abayi kusebenza ngokufanelekileyo.Kodwa kwezinye iimeko, imeko enjalo inzima kakhulu, njenge-5V ukuya kwi-3.3V, umehluko we-voltage phakathi kwegalelo kunye nemveliso yi-1.7v kuphela, engahambelani neemeko zokusebenza zabalawuli bendabuko.Ukuphendula kule meko, abavelisi be-chip baye baphuhlisa iitshiphusi zokuguqulwa kombane wohlobo lwe-LDO.
I-LDO sisilawuli somgca osebenzisa i-transistor okanye ityhubhu ye-field-effect (FET) esebenza kummandla wayo wokugcwalisa ukuvelisa amandla ombane aphumayo alawulwayo ngokususa amandla ombane angaphezulu kumbane wokufaka isicelo.Umbane wokuyeka umbane ngowona mahluko omncinci phakathi kombane ongenisayo kunye nombane ophumayo ofunekayo ukuze umlawuli agcine umbane ophumayo ngaphakathi kwe-100mV ngaphezulu okanye ngaphantsi kwexabiso layo legama.Abalawuli bamandla ombane aphumayo e-LDO (ukwehla okuphantsi) ngokuqhelekileyo basebenzisa i-transistor yamandla (ekwaziwa ngokuba sisixhobo sokudlulisa) njenge-PNP.le transistor ivunyelwe ukuba ihluthe ukuze umlawuli abe nombane ophantsi kakhulu wokuyeka, ngokuqhelekileyo malunga ne-200mV;ngokuthelekisa, abalawuli abaqhelekileyo abasebenzisa i-NPN i-transistors yamandla adibeneyo banokuyeka malunga ne-2V.Isiphumo esibi se-LDO sisebenzisa i-NPN njengesixhobo sayo sokuhambisa kwaye sisebenza ngendlela efanayo kwisixhobo se-PNP semveliso encomekayo ye-LDO.

Uphuhliso olutsha lusebenzisa iitransistor zamandla eMOS, ezikwaziyo ukubonelela ngowona mbane uphantsi wokuyeka umbane.Nge-MOS yamandla, ukuhla kwamandla ombane kuphela kumlawuli kubangelwa ukuchasana kwe-ON komthwalo wangoku wesixhobo sokubonelela umbane.Ukuba umthwalo uncinci, i-voltage drop drop eveliswa ngale ndlela ngamashumi ambalwa e-millivolts.
I-DC-DC ithetha i-DC ukuya kwi-DC (ukuguqulwa kwamaxabiso obonelelo lwe-DC ahlukeneyo) kwaye nasiphi na isixhobo esidibana nale nkcazo sinokubizwa ngokuba sisiguquli se-DC-DC, kuquka ii-LDO, kodwa isigama esiqhelekileyo kukubiza izixhobo apho i-DC ukuya kwi-DC iphunyezwa ngokutshintsha. .
I-LDO imele i-low dropout voltage, echazwe kumhlathi omnye: Ixabiso eliphantsi, ingxolo ephantsi, kunye ne-low quiescent current of low dropout (LDO) linear regulator zizibonelelo zayo ezibalaseleyo.Ikwafuna amacandelo ambalwa angaphandle, ngokuqhelekileyo i-bypass capacitor enye okanye ezimbini.Izilawuli ezitsha ze-LDO zinokufikelela ezi nkcukacha zilandelayo: ingxolo yemveliso ye-30μV, i-PSRR ye-60dB, kunye ne-quiescent current ye-6μA (i-TI's TPS78001 ifezekisa i-Iq=0.5uA), kunye nokwehla kwamandla ombane we-100mV kuphela (ii-LDO eziveliswe ngobuninzi be-TI kunye nebango 0.1mV).Isizathu esona sizathu sokuba i-LDO i-linear regulators inokufikelela kweli nqanaba lokusebenza kukuba ityhubhu yokulawula kubo i-MOSFET ye-P-channel, ngelixa i-linear regulators eziqhelekileyo zisebenzisa i-PNP transistors.i-P-channel MOSFET iqhutywa yi-voltage kwaye ayifuni okwangoku, ngoko inciphisa kakhulu ikhoyo ngoku esetyenziswa sisixhobo ngokwaso;Ngakolunye uhlangothi, kwiisekethe ezine-PNP transistors, zithintela i-PNP Ngakolunye uhlangothi, kwiisekethe ezine-PNP transistors, ukuhla kwe-voltage phakathi kwe-input kunye ne-output akufanele kube phantsi kakhulu ukukhusela i-PNP transistor ekuzaliseni nasekunciphiseni amandla okuvelisa;ukuhla kwamandla ombane kwi-P-channel MOSFET iphantse ilingane nemveliso yemveliso yangoku kunye nokumelana.Kuba ukuxhathisa kwe-MOSFET kuncinci kakhulu, ukuhla kwamandla ombane kuyo kuphantsi kakhulu.

Ukuba igalelo kunye neziphumo zombane zisondele kakhulu, kungcono ukusebenzisa umlawuli we-LDO, onokufikelela ekusebenzeni okuphezulu kakhulu.Ngoko ke, abalawuli be-LDO basetyenziswa kakhulu kwizicelo apho i-lithium-ion ibhetri yebhethri iguqulwa ibe yi-3V yokukhupha i-voltage.Nangona amandla ebhetri engasetyenziswanga kwipesenti ezilishumi zokugqibela, umlawuli we-LDO usenokuqinisekisa ixesha elide lokusebenza kwebhetri kunye nengxolo ephantsi.
Ukuba igalelo kunye nemveliso yombane ayisondele kakhulu, i-DCDC yokutshintsha kufuneka ithathelwe ingqalelo kuba, njengoko kunokubonwa kulo mgaqo ungasentla, igalelo langoku le-LDO lilingana nemveliso yangoku, kwaye ukuba ukuhla kwamandla ombane kukhulu kakhulu. amandla asetyenzisiweyo kwi-LDO makhulu kakhulu kwaye akasebenzi kakuhle.
Iziguquli ze-DC-DC zibandakanya i-step-up, i-step-down, i-step-up / down, kunye ne-inverting circuits.iinzuzo ze-DC-DC converters zisebenza kakuhle kakhulu, kunye nokukwazi ukuvelisa imisinga ephezulu kunye nemisinga ephantsi epholileyo.Ngokudibanisa okwandisiweyo, abaguquli abaninzi abatsha beDC-DC bafuna kuphela ii-inductors zangaphandle ezimbalwa kunye nee-capacitors zokucoca.Nangona kunjalo, i-pulsation ephumayo kunye nokutshintsha ingxolo yaba balawuli bamandla aphezulu kwaye ixabiso liphezulu kakhulu.
Kwiminyaka yakutshanje, ngophuhliso lwetekhnoloji ye-semiconductor, i-surface-mount inductors, ii-capacitors, kunye ne-chips ezidityanisiweyo zokulawula umbane ziye zabancinci kwaye zincinci kwiindleko.Umzekelo, kumbane ongenisayo we-3V, imveliso ye-5V/2A inokufumaneka kusetyenziswa i-NFET ekwi-chip.Okwesibini, kwizicelo zombane ezincinci ukuya eziphakathi, iindleko eziphantsi, iipakethe ezincinci zingasetyenziswa.Ukongeza, ukuba i-frequency switching inyuswe ukuya kwi-1MHz, kunokwenzeka ukunciphisa iindleko kunye nokusebenzisa ii-inductors ezincinci kunye ne-capacitors.Ezinye zezixhobo ezitsha zongeza izinto ezininzi ezintsha ezinje ngesiqalo esithambileyo, umda wangoku, iPFM, okanye ukhetho lwemowudi yePWM.
Ngokubanzi, ukhetho lwe-DCDC lokunyusa luyimfuneko.Kwi-buck, ukhetho lwe-DCDC okanye i-LDO luthelekiso ngokweendleko, ukusebenza kakuhle, ingxolo kunye nokusebenza.

Iiyantlukwano eziphambili

I-LDO yi-micro-power low dropout linear regulator ekholisa ukuba nesandi esiphantsi kakhulu kunye neRatio yokuLahlwa koMbane (PSRR).
I-LDO sisizukulwana esitsha sabalawuli beesekethe ezidibeneyo, ehluke kakhulu kwilingo lokuba i-LDO yinkqubo encinci kwi-chip (SoC) kunye nokuzisebenzisela okuphantsi kakhulu.Ingasetyenziselwa ulawulo lwangoku lwetshaneli, i-chip idibanise ii-MOSFETs ezinokumelana okuphantsi kakhulu kwe-intanethi, i-Schottky diode, i-resistors yesampuli, i-resistors ye-voltage divider, kunye nezinye iisekethe ze-hardware, kwaye inokhuseleko lwangoku, ubushushu obungaphezulu. ukhuseleko, umthombo wesalathiso ochanekileyo, iamplifier yokwahlukana, ukulibaziseka, njl. .

isakhiwo kunye nomgaqo

Ubume kunye nomgaqo wesenzo.
Ulwakhiwo lwe-LDO low dropout linear regulator ikakhulu lubandakanya isekethe yokuqalisa, iyunithi ethe gqolo yangoku yomthombo wecala, isekethe, icandelo lohlengahlengiso, umthombo wereferensi, iamplifier yempazamo, inethiwekhi yokumelana nempendulo, isekethe yokhuseleko, njl.njl. ngolu hlobo lulandelayo: inkqubo inikwe amandla, ukuba iphini lokunika amandla likwinqanaba eliphezulu, isekethe iqala ukuqalisa, isekethe yomthombo wangoku ibonelela ngecala kwisekethe yonke, kwaye i-voltage yomthombo wereferensi imiselwa ngokukhawuleza, imveliso inyuka ngokuqhubekayo. Ngegalelo xa imveliso imalunga nokufikelela kwixabiso elikhankanyiweyo, amandla ombane engxelo yemveliso efunyenwe yinethiwekhi yengxelo ikwakufutshane nexabiso lombane wereferensi, ngeli xesha iamplifier yempazamo iya kukhupha amandla ombane wengxelo kunye nombane wereferensi phakathi kombane omncinci. isignali yephutha inyuswa, kwaye emva koko inyuswe ngumbhobho wohlengahlengiso kwimveliso, ngaloo ndlela yenza ingxelo engalunganga yokuqinisekisa ukuba i-voltage ephumayo izinzile kwixabiso elichaziweyo.Ngokufanayo, ukuba i-voltage yegalelo iyatshintsha okanye utshintsho lwangoku, le sekethi evaliweyo iya kugcina i-voltage ephumayo ingatshintshwanga.