imwe-stop shopu yemagetsi zvikamu TLV1117LV33DCYR SOT223 controller chip ic integrated circuit

tsananguro pfupi:

Iyo TLV1117LV yakatevedzana yeyakaderera-dropout(LDO) linearegulators ishoma yekuisa voltage vhezheni yeanozivikanwa TLV1 117 voltage regulator.
Iyo TLV1117LV chishandiso chine simba rakaderera zvakanyanya chinopedza ka500 yakadzikira yakadzikama pane yechinyakare 11 17 voltage regulators, zvichiita kuti mudziyo ukwane kune maapplication anoraira yakaderera kwazvo yekumira ikozvino.Iyo TLV1117LV mhuri yeLDOS zvakare yakagadzikana iine 0 mA yekuremerwa ikozvino: hapana hudiki hudiki hunodiwa, ichiita sarudzo yakanakira yezvishandiso apo mutongi anoisa simba mitoro midiki panguva yekumira mukuwedzera kune mahombe mafungu pahurongwa hwe1 A panguva yenormaoperation.Iyo TLV1117LV inopa yakanakisa mutsara uye kuremedza kuita kwechinguvana, zvichikonzera kushomeka kwepasi uye overshoots yekubuda kwevoltage kana chinodiwa chazvino chinochinja kubva pasi pe1 MA kuenda kune anopfuura 500 mA.

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Product Detail

Product Tags

Iyo chaiyo bandgap uye kukanganisa amplifier inopa 1.5% kunyatsoita.Iyo yakanyanya simba-supply rejection ratio (PSRR) inogonesa kushandiswa kwechishandiso che postegulation mushure meiyo switching regulator.Zvimwe zvakakosha zvinosanganisira yakaderera-inobuda ruzha uye yakaderera-dropou tvoltage.
Chishandiso chinotsiviwa nemukati kuti chigadzikane ne0-Ω yakaenzana yakatevedzana kuramba (ESR) capacitors.Aya mabhenefiti akakosha anogonesa kushandiswa kweinodhura-inoshanda, diki-saizi ceramic capacitors.Inodhura-inoshanda macapacitor ane yakakwirira bias voltagesa uye tembiricha inodzikira inogona kushandiswa kana ichidikanwaIyo TLV1117LV yakatevedzana inowanikwa muSOT-223 package.

Product Attributes

TYPE	DESCRIPTION
Category	Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear
Mfr	Texas Instruments
Series	-
Package	Tepi & Reel (TR) Cheka Tape (CT) Digi-Reel®
SPQ
Product Status	Active
Output Configuration	Positive
Output Type	Fixed
Nhamba yeVatongi	1
Voltage - Input (Max)	5.5V
Voltage - Kubuda (Mini/Yakagadziriswa)	3.3V
Voltage - Kubuda (Max)	-
Voltage Dropout (Max)	1.3V @ 800mA
Zvazvino - Output	1A
Zvazvino - Quescent (Iq)	100µA
PSRR	75dB (120Hz)
Kudzora Zvinhu	-
Dziviriro Features	Pamusoro Pazvino, Pamusoro PeTemperature
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Nyaya	TO-261-4, TO-261AA
Supplier Device Package	SOT-223-4
Base Product Number	TLV1117

LDO regulator?

LDO, kana yakaderera dropout regulator, ndeye yakaderera yekudonha mutsara mutsara.Izvi zvinoenderana nechinyakare linear regulator.Traditional linear regulators, senge 78XX akatevedzana machipisi, anoda kuti magetsi ekuisa aite kanenge 2V ~ 3V yakakwirira kupfuura inobuda voltage, zvikasadaro, haishande nemazvo.Asi mune dzimwe nguva, mamiriro akadai akanyanya kuomarara, senge 5V kusvika 3.3V, mutsauko wevoltage pakati peinopinza uye inobuda ingori 1.7v, iyo isingasangane nemamiriro ekushanda echinyakare mitsetse regulators.Mukupindura mamiriro ezvinhu aya, vagadziri ve chip vakagadzira LDO-mhando voltage conversion chips.
Iyo LDO mutsara wemutsetse unoshandisa transistor kana munda-effect chubhu (FET) inoshanda munzvimbo yayo yekusatutsira kuburitsa yakadzorwa inobuda voltage nekubvisa yakawandisa voltage kubva pakuisa voltage yechishandiso.Iyo voltage yekudonhedza voltage ndiyo musiyano udiki pakati peiyo yekupinda voltage uye inobuda voltage inodiwa kuti mutongi achengetedze inobuda voltage mukati me100mV pamusoro kana pazasi kukosha kwayo kwezita.Positive output voltage LDO (low dropout) regulators vanowanzo shandisa transistor yemagetsi (inozivikanwawo semudziyo wekufambisa) sePNP.iyi transistor inotenderwa kuguta saka regulator inogona kuve yakaderera chaizvo yekudonha voltage, kazhinji kutenderera 200mV;nekuenzanisa, zvakajairwa mutsara regulators vachishandisa NPN composite simba transistors vane dropout kumativi 2V.Iyo yakashata yakabuda LDO inoshandisa NPN semudziyo wayo wekutumira uye inoshanda nenzira yakafanana kune PNP mudziyo weiyo yakanaka kubuda LDO.

Zvitsva zvitsva zvinoshandisa MOS magetsi transistors, ayo anokwanisa kupa yakaderera yekudonha voltage.Iine simba MOS, iyo chete voltage inodonha kuburikidza neregulator inokonzerwa neON kushorwa kwemutoro wezvino wemagetsi emagetsi.Kana mutoro wacho uri mudiki, kudonha kwemagetsi kunogadzirwa nenzira iyi kunongova makumi mashoma emamilivolts.
DC-DC zvinoreva DC kuenda kuDC (shanduko yemhando dzakasiyana dzekupa DC) uye chero mudziyo unosangana netsanangudzo iyi unogona kudaidzwa kuti DC-DC inoshandura, kusanganisira maLDO, asi izwi rekare nderekudaidza midziyo uko DC kuenda kuDC inowanikwa nekuchinja. .
LDO inomirira low dropout voltage, iyo inotsanangurwa mundima imwe: Mutengo wakaderera, wakaderera ruzha, uye wakaderera wakadzikama weiyo low dropout (LDO) mutsara regulator ndiwo mabhenefiti ayo akatanhamara.Inodawo mashoma ekunze zvikamu, kazhinji ingori imwe kana maviri bypass capacitor.New LDO linear regulators inogona kuzadzisa zvinotevera zvinotemerwa: ruzha rwekubuda kwe30μV, PSRR ye60dB, uye yakanyarara ikozvino ye6μA (TI's TPS78001 inowana Iq=0.5uA), uye kudonha kwevoltage ye100mV chete (TI yakawanda-yakagadzirwa LDOs ine inonzi inonzi. 0.1mV).Chikonzero chikuru nei LDO linear regulators inogona kuwana iyi nhanho yekuita ndeyekuti regulator chubhu mavari iP-channel MOSFET, nepo akajairwa mutsara maregulator anoshandisa PNP transistors.iyo P-channel MOSFET inofambiswa nevoltage uye haidi ikozvino, saka inoderedza zvakanyanya ikozvino inopedzwa nemudziyo pachayo;kune rumwe rutivi, mumatunhu ane PNP transistors, kudzivirira PNP Ukuwo, mumatunhu ane PNP transistors, kudonha kwemagetsi pakati pekupinza uye kubuda hakufaniri kunge kwakaderera kudzivirira PNP transistor kubva pakuzara uye kuderedza kukwanisa kwekubuda;kudonha kwevoltage mhiri kweP-channel MOSFET inenge yakaenzana nechigadzirwa chekubuda kwazvino uye kupikisa.Sezvo kupikisa kweMOSFET kuri kudiki, kudonha kwevoltage pairi kwakadzikira.

Kana iyo yekupinza uye yekubuda voltages iri padyo zvakanyanya, zviri nani kushandisa LDO regulator, iyo inogona kuwana yakanyanya kushanda zvakanaka.Naizvozvo, LDO regulators anonyanya kushandiswa mukushandisa uko lithium-ion bhatiri voltage inoshandurwa kuita 3V inobuda voltage.Kunyangwe simba rebhatiri risingashandiswe kwegumi muzana yekupedzisira, iyo LDO regulator inogona kuramba ichive nechokwadi chenguva refu yekushanda kwebhatiri neruzha rwakaderera.
Kana iyo yekupinza uye inobuda voltages isiri pedyo zvakanyanya, switching DCDC inofanirwa kutariswa nekuti, sezvinogona kuonekwa kubva pamusoro apa musimboti, iyo yekuisa ikozvino yeLDO yakaenzana neyekubuda ikozvino, uye kana kudonha kwemagetsi kwakakurisa. simba rinoshandiswa muLDO rakakura uye harina kunyatsoshanda.
DC-DC inoshandura inosanganisira nhanho-kumusoro, nhanho-pasi, nhanho-kumusoro/pasi, uye inverting maseketi.mabhenefiti eDC-DC converters akanyanya kushanda zvakanaka, uye kugona kuburitsa yakakwira macurrents uye yakaderera quiescent currents.Nekuwedzera kubatanidzwa, mazhinji matsva eDC-DC anoshandura anongoda mashoma ekunze inductors uye mafirita capacitor.Nekudaro, iyo inobuda pulsation uye switching ruzha rweaya emagetsi controller akakwira uye mutengo wakakwira.
Mumakore achangopfuura, nekuvandudzwa kwesemiconductor tekinoroji, pamusoro-mount inductors, capacitors, uye yakanyanya kusanganiswa magetsi emagetsi controller machipisi ave madiki uye madiki mumutengo.Semuenzaniso, kune yekupinda voltage ye3V, kubuda kwe5V/2A kunogona kuwanikwa uchishandisa on-chip NFET.Chechipiri, kune madiki kusvika epakati magetsi ekushandisa, yakaderera-mutengo, madiki mapakeji anogona kushandiswa.Uye zvakare, kana iyo yekuchinja frequency yakawedzera kusvika 1MHz, zvinokwanisika kuderedza mutengo uye kushandisa madiki inductors uye capacitors.Zvimwe zvezvishandiso zvitsva zvinowedzerawo akawanda maficha akadai sekutanga kupfava, ikozvino kumisa, PFM, kana PWM modhi sarudzo.
Kazhinji, sarudzo yeDCDC yekusimudzira ndiyo inofanirwa.Kune buck, sarudzo yeDCDC kana LDO inofananidzwa maererano nemutengo, kushanda zvakanaka, ruzha, uye kuita.

Misiyano mikuru

Iyo LDO idiki-simba yakaderera yekudonhedza linear regulator iyo inowanzo ine yakaderera kwazvo ruzha uye yakakwira Power Supply Rejection Ratio (PSRR).
Iyo LDO chizvarwa chitsva cheyakasanganiswa yedunhu regulators, iyo inosiyana zvakanyanya kubva muyedzo pakuti iyo LDO idiki sisitimu pane chip (SoC) ine yakaderera kwazvo yekuzvishandisa.Inogona kushandiswa kune yazvino chiteshi chekutonga, iyo chip yakabatanidza MOSFETs ine yakaderera-mumutsara pa-resistance, Schottky diodes, sampling resistors, voltage divider resistors, uye mamwe maseketi ehardware, uye ine kuchengetedzwa kwepamusoro-ikozvino, kupfuura-tembiricha. dziviriro, precision reference source, differential amplifier, kunonoka, etc. PG chizvarwa chitsva cheLDO, ine imwe neimwe inobuda nyika yekuzviongorora, kunonoka kuchengetedza simba rekupa basa, inogonawo kunzi Power Good, kureva "simba rakanaka kana simba rakagadzikana" .

chimiro uye musimboti

Chimiro uye musimboti wechiito.
Chimiro cheLDO low dropout linear regulator inonyanya kusanganisira yekutanga-up circuit, inogara iripo ikozvino source bias unit, inogonesa dunhu, zvigadziriso zvekugadzirisa, referensi sosi, kukanganisa amplifier, mhinduro resistor network, kudzivirira dunhu, nezvimwe. sezvinotevera: sisitimu inokwidziridzwa, kana pini yekugonesa iri padanho repamusoro, dunhu rinotanga kutanga, iyo inogara iripo sosi yedunhu inopa bias kudunhu rese, uye referensi sosi voltage inokurumidza kusimbiswa, iyo inobuda inokwira ichienderera. neiyo yekupinza kana iyo yakabuda yave kuda kusvika kune yakatsanangurwa kukosha, iyo inobuda mhinduro voltage inowanikwa netiweki yemhinduro zvakare iri padyo nereferensi voltage kukosha, panguva ino amplifier yekukanganisa ichaburitsa iyo voltage yemhinduro uye referensi voltage pakati peIyo diki. chiratidzo chemhosho chinokwidziridzwa, uye yozokwidziridzwa nechubhu yekugadziridza kune inobuda, nekudaro ichigadzira mhinduro isina kunaka kuti ive nechokwadi chekuti inobuda voltage yakagadzikana pane yakatarwa kukosha.Saizvozvo, kana magetsi ekuisa akachinja kana kubuda kwazvino kuchinja, iyi yakavharwa-loop seketi inochengeta yakabuda voltage isingachinji.