malo amodzi opangira zida zamagetsi TLV1117LV33DCYR SOT223 Chip ic Integrated circuit

malo ogulitsa zinthu zamagetsi TLV1117LV33DCYR SOT223 Chip ic Integrated circuit Chithunzi chowonetsedwa

Kufotokozera mwachidule:

Ma linearegulators a TLV1117LV a low-dropout(LDO) ndi mtundu wocheperako wamagetsi amtundu wotchuka wa TLV1 117 voltage regulator.
TLV1117LV ndi chipangizo champhamvu kwambiri chotsika kwambiri chomwe chimagwiritsa ntchito mphamvu zochepera 500 kuposa zowongolera zamtundu wa 11 17 voliyumu, zomwe zimapangitsa chipangizochi kukhala choyenera kugwiritsa ntchito zomwe zimagwira ntchito zotsika kwambiri.Banja la TLV1117LV la LDOS lilinso lokhazikika ndi 0 mA ya katundu wamakono: palibe chofunikira cholemetsa chocheperako, kupanga chipangizocho kukhala chothandiza pa ntchito zomwe olamulira ali ndi mphamvu zochepa kwambiri panthawi yoyimilira komanso mafunde akuluakulu pa dongosolo la 1 A panthawi ya normaoperation.TLV1117LV imapereka mzere wabwino kwambiri komanso magwiridwe antchito osakhalitsa, zomwe zimapangitsa kuti mphukira zazing'ono kwambiri komanso zochulukirapo zamagetsi otuluka pamene katundu wapano akusintha kuchoka ku zosakwana 1 MA kupita kupitilira 500 mA.

Titumizireni imelo Tsitsani Datesheet

Tsatanetsatane wa Zamalonda

Zogulitsa Tags

Bandgap yolondola komanso amplifier yolakwika imapereka kulondola kwa 1.5%.Mphamvu yapamwamba kwambiri yokana kukana mphamvu (PSRR) imathandizira kugwiritsa ntchito chipangizocho potsatira pambuyo posintha kusintha.Zina zamtengo wapatali zimaphatikizapo phokoso lotsika komanso low-dropou tvoltage.
Chipangizocho chimalipidwa mkati kuti chikhale chokhazikika ndi 0-Ω chofanana ndi ma capacitors (ESR).Ubwino waukuluwu umathandizira kugwiritsa ntchito ma capacitors a ceramic otsika mtengo, ang'onoang'ono.Ma capacitor otsika mtengo omwe ali ndi ma voltages okonda kukondera komanso kutsika kwa kutentha angagwiritsidwenso ntchito ngati angafuneMndandanda wa TLV1117LV ukupezeka mu phukusi la SOT-223.

Makhalidwe a Zamalonda

TYPE	DESCRIPTION
Gulu	Magawo Ophatikizana (ICs) PMIC - Voltage Regulators - Linear
Mfr	Texas Instruments
Mndandanda	-
Phukusi	Tape & Reel (TR) Dulani Tepi (CT) Digi-Reel®
SPQ
Mkhalidwe wa Zamalonda	Yogwira
Kukonzekera kwa Zotulutsa	Zabwino
Mtundu Wotulutsa	Zokhazikika
Chiwerengero cha Owongolera	1
Mphamvu yamagetsi - Kulowetsa (Max)	5.5V
Mphamvu yamagetsi - Kutulutsa (Mphindi / Zokhazikika)	3.3 V
Mphamvu yamagetsi - Kutulutsa (Max)	-
Kutsika kwa Voltage (Max)	1.3V @ 800mA
Zamakono - Zotuluka	1A
Panopa - Quescent (Iq)	100µA
PSRR	75dB (120Hz)
Control Features	-
Mawonekedwe a Chitetezo	Pakalipano, Kutentha Kwambiri
Kutentha kwa Ntchito	-40°C ~ 125°C
Mtundu Wokwera	Surface Mount
Phukusi / Mlandu	KUTI-261-4, KUTI-261AA
Phukusi la chipangizo cha Supplier	SOT-223-4
Nambala Yoyambira Yogulitsa	Chithunzi cha TLV1117

Woyang'anira LDO?

LDO, kapena low dropout regulator, ndi otsika otsika mzere wowongolera.Izi zimagwirizana ndi zowongolera zachikhalidwe.Zowongolera zama mzere wachikhalidwe, monga 78XX mndandanda wa tchipisi, zimafuna kuti voliyumu yolowera ikhale osachepera 2V ~ 3V apamwamba kuposa voliyumu yotulutsa, apo ayi, sangagwire ntchito bwino.Koma nthawi zina, mkhalidwe woterewu umakhala wovuta kwambiri, monga 5V mpaka 3.3V, kusiyana kwa voliyumu pakati pa zolowetsa ndi zotulutsa ndi 1.7v yokha, yomwe siyikukwaniritsa zomwe zimagwirira ntchito za owongolera azikhalidwe.Potengera izi, opanga ma chip apanga tchipisi tosinthira magetsi amtundu wa LDO.
LDO ndi mzere wowongolera womwe umagwiritsa ntchito transistor kapena field-effect chubu (FET) yomwe imagwira ntchito m'dera lake kuti ipangitse magetsi oyendetsedwa bwino pochotsa mphamvu yochulukirapo pamagetsi olowera.Voltage dropout voltage ndiye kusiyana kocheperako pakati pa voliyumu yolowera ndi voteji yomwe imafunikira kuti wowongolera azisunga voteji mkati mwa 100mV pamwamba kapena pansi pamtengo wake.Positive output voltage LDO (low dropout) owongolera amagwiritsa ntchito transistor yamagetsi (yomwe imadziwikanso kuti chida chosinthira) monga PNP.Transistor iyi imaloledwa kukhutitsidwa kotero kuti chowongoleracho chikhoza kukhala ndi voteji yotsika kwambiri, nthawi zambiri kuzungulira 200mV;Poyerekeza, ochiritsira liniya ochiritsira ntchito NPN gulu mphamvu transistors ndi dropout pafupifupi 2V.Kutulutsa koyipa kwa LDO kumagwiritsa ntchito NPN ngati chipangizo chake choperekera ndipo imagwira ntchito mofanana ndi chipangizo cha PNP cha LDO yabwino.

Zatsopano zimagwiritsa ntchito ma transistors amphamvu a MOS, omwe amatha kupereka mphamvu yotsika kwambiri.Ndi MOS yamphamvu, kutsika kwamagetsi kokha kudzera pa chowongolera kumayambitsidwa ndi kukana kwa ON kwa katundu wapano wa chipangizo chamagetsi.Ngati katunduyo ndi wochepa, dontho lamagetsi lopangidwa motere ndilochepa chabe ma millivolts.
DC-DC amatanthauza DC kupita ku DC (kusintha kwamitundu yosiyanasiyana ya DC) ndipo chipangizo chilichonse chomwe chikugwirizana ndi tanthauzoli chitha kutchedwa chosinthira cha DC-DC, kuphatikiza ma LDO, koma mawu odziwika bwino ndikuyimbira zida zomwe DC kupita ku DC imatheka posintha. .
LDO imayimira low dropout voltage, zomwe zafotokozedwa m'ndime imodzi: Mtengo wotsika, phokoso lotsika, komanso kutsika kwapang'onopang'ono kwa low dropout (LDO) linear regulator ndi zabwino zake zazikulu.Pamafunikanso zigawo zochepa zakunja, nthawi zambiri ma bypass capacitor amodzi kapena awiri.Zowongolera zatsopano za LDO zimatha kukwaniritsa zotsatirazi: phokoso lotulutsa 30μV, PSRR ya 60dB, ndi 6μA (TI's TPS78001 ikwaniritsa Iq=0.5uA), ndi kutsika kwamagetsi kwa 100mV (ma LDO opangidwa ndi TI okhala ndi zomwe amati 0.1mv).Chifukwa chachikulu chomwe owongolera mzere wa LDO amatha kukwaniritsa ntchitoyi ndikuti chubu chowongolera mwa iwo ndi P-channel MOSFET, pomwe owongolera mizere wamba amagwiritsa ntchito ma transistors a PNP.P-channel MOSFET imayendetsedwa ndi voliyumu ndipo sifunikira panopo, motero imachepetsa kwambiri zomwe zimagwiritsidwa ntchito ndi chipangizocho;Komano, mu madera ndi PNP transistors, kuteteza PNP Komano, mu madera ndi PNP transistors, voteji dontho pakati athandizira ndi linanena bungwe sayenera kukhala otsika kwambiri kuteteza PNP transistor kukhutitsa ndi kuchepetsa linanena bungwe mphamvu;kutsika kwamagetsi kudutsa P-channel MOSFET pafupifupi kofanana ndi zomwe zimachokera pakalipano komanso kukana.Popeza kukana kwa MOSFET ndikochepa kwambiri, kutsika kwamagetsi kudutsako ndikotsika kwambiri.

Ngati magetsi olowera ndi otuluka ali pafupi kwambiri, ndi bwino kugwiritsa ntchito chowongolera cha LDO, chomwe chingathe kuchita bwino kwambiri.Chifukwa chake, owongolera a LDO amagwiritsidwa ntchito kwambiri pazogwiritsa ntchito pomwe mphamvu ya batri ya lithiamu-ion imasinthidwa kukhala 3V linanena bungwe voteji.Ngakhale mphamvu ya batri siigwiritsidwa ntchito pa khumi peresenti yotsiriza, wolamulira wa LDO akhoza kutsimikizirabe nthawi yayitali yogwiritsira ntchito batri ndi phokoso lochepa.
Ngati magetsi olowera ndi otuluka sali pafupi kwambiri, kusintha kwa DCDC kuyenera kuganiziridwa chifukwa, monga momwe tingawonere kuchokera ku mfundo yomwe ili pamwambayi, kulowetsedwa kwa LDO kuli kofanana ndi kutulutsa kwamakono, ndipo ngati kutsika kwa magetsi kuli kwakukulu kwambiri, mphamvu zomwe zimagwiritsidwa ntchito mu LDO ndi zazikulu kwambiri komanso sizothandiza kwambiri.
Otembenuza a DC-DC amaphatikizapo kutsika, kutsika, kutsika / kutsika, ndi mabwalo ozungulira.ubwino wa DC-DC converters ndi mkulu dzuwa, ndi luso linanena bungwe mafunde mkulu ndi otsika quiescent mafunde.Ndi kuphatikiza kowonjezereka, otembenuza ambiri atsopano a DC-DC amafunikira ma inductors akunja ochepa ndi ma capacitor osefera.Komabe, kutulutsa kwamphamvu ndi kusinthasintha kwa phokoso la olamulira magetsiwa ndi okwera ndipo mtengo wake ndi wokwera kwambiri.
M'zaka zaposachedwa, ndi chitukuko chaukadaulo wa semiconductor, ma inductors okwera pamwamba, ma capacitor, ndi tchipisi tating'onoting'ono tamagetsi amagetsi akhala ang'onoang'ono komanso otsika mtengo.Mwachitsanzo, pamagetsi olowera a 3V, kutulutsa kwa 5V/2A kumatha kupezeka pogwiritsa ntchito on-chip NFET.Kachiwiri, pamagetsi ang'onoang'ono mpaka apakatikati, ma phukusi ang'onoang'ono angagwiritsidwe ntchito.Kuphatikiza apo, ngati ma frequency osinthira akuwonjezeka mpaka 1MHz, ndizotheka kuchepetsa ndalama ndikugwiritsa ntchito ma inductors ang'onoang'ono ndi ma capacitor.Zina mwazida zatsopano zimawonjezeranso zinthu zambiri zatsopano monga zoyambira zofewa, malire apano, PFM, kapena kusankha kwa PWM.
Mwambiri, kusankha kwa DCDC kuti ipititse patsogolo ndikofunikira.Pandalama, kusankha kwa DCDC kapena LDO ndikufanizira mtengo, mphamvu, phokoso, ndi magwiridwe antchito.

Kusiyana kwakukulu

LDO ndi chowongolera champhamvu chochepa chotsika mphamvu chomwe chimakhala ndi phokoso lotsika kwambiri komanso kukana kwamphamvu kwambiri kwa Power Supply Rejection Ratio (PSRR).
LDO ndi mbadwo watsopano wa olamulira ozungulira ophatikizika, omwe amasiyana kwambiri ndi mayesero chifukwa LDO ndi kachitidwe kakang'ono pa chip (SoC) ndi kutsika kochepa kwambiri.Itha kugwiritsidwa ntchito pakuwongolera mayendedwe apano, chipcho chaphatikiza ma MOSFET okhala ndi kutsika kwambiri pa intaneti, ma Schottky diode, ma sampling resistors, ma voltage divider resistors, ndi ma frequency ena a hardware, ndipo ali ndi chitetezo chopitilira apo, kutentha kwambiri. chitetezo, gwero lodziwika bwino, amplifier yosiyanitsa, kuchedwa, ndi zina zotero. PG ndi mbadwo watsopano wa LDO, ndi mtundu uliwonse wodziyesa wodziyesa, kuchedwa ntchito yamagetsi yamagetsi, imatha kutchedwanso Power Good, mwachitsanzo "mphamvu zabwino kapena mphamvu" .

kapangidwe ndi mfundo

Kapangidwe ndi mfundo ya zochita.
Mapangidwe a LDO low dropout linear regulator makamaka imaphatikizapo gawo loyambira, gawo lokhazikika lomwe lilipo pano, lothandizira dera, zida zosinthira, gwero lazofotokozera, amplifier zolakwika, network resistor network, protection circuit, etc. motere: dongosololi limayendetsedwa, ngati pini yothandizira ili pamtunda wapamwamba, dera limayamba, dera lokhazikika lomwe likupezekapo limapereka kukondera kwa dera lonse, ndipo mphamvu yowonjezera mphamvu imakhazikitsidwa mwamsanga, zotsatira zake zimatuluka mosalekeza. ndi zolowetsazo pamene zotulutsa zatsala pang'ono kufika pamtengo womwe watchulidwa, mphamvu yamagetsi yomwe imatulutsidwa ndi netiweki ya ndemanga ilinso pafupi ndi mtengo wamagetsi, panthawiyi chokulitsa cholakwika chidzatulutsa mphamvu yamagetsi ndi voteji pakati pa The yaying'ono. chizindikiro cholakwa chimakulitsidwa, ndiyeno chimakulitsidwa ndi chubu chosinthira ku zotsatira zake, motero kupanga malingaliro olakwika kuti atsimikizire kuti voteji yotulutsa imakhala yokhazikika pamtengo womwe watchulidwa.Momwemonso, ngati mphamvu yolowera ikusintha kapena kusintha komwe kumachokera pakalipano, dera lotsekekali limapangitsa kuti voteji isasinthe.