ib lub khw rau cov khoom siv hluav taws xob TLV1117LV33DCYR SOT223 maub los nti ic integrated circuit

luv luv piav qhia:

TLV1117LV series ntawm low-dropout (LDO) linearegulators yog ib tug tsawg input voltage version ntawm nrov TLV1 117 voltage regulator.
TLV1117LV yog ib qho khoom siv hluav taws xob tsis tshua muaj hluav taws xob uas siv 500 npaug qis qis dua tam sim no dua li cov khoom siv hluav taws xob 11 17, ua rau cov cuab yeej tsim nyog rau cov ntawv thov uas tswj hwm qhov tam sim no qis heev.TLV1117LV tsev neeg ntawm LDOS tseem ruaj khov nrog 0 mA ntawm kev thauj khoom tam sim no: tsis muaj qhov yuav tsum tau ua yam tsawg kawg nkaus, ua rau cov cuab yeej xaiv tau zoo rau cov ntawv thov uas tus tswj hwm lub cev muaj zog me me loads thaum standby ntxiv rau cov dej ntws loj ntawm qhov kev txiav txim ntawm 1 A thaum lub sijhawm ua haujlwm tsis zoo.TLV1117LV muaj cov kab zoo heev thiab kev ua haujlwm tsis tu ncua, ua rau muaj qhov tsis txaus ntseeg hauv qab thiab overshoots ntawm outputvoltage thaum lub load tam sim no yuav tsum tau hloov ntawm tsawg dua 1 MA mus rau ntau tshaj 500 mA.

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Product Detail

Khoom cim npe

A precision bandgap thiab yuam kev amplifier muab 1.5% raug.Ib qho kev tsis lees txais lub zog loj heev (PSRR) ua rau kev siv lub cuab yeej rau kev xa rov qab tom qab hloov chaw tswj hwm.Lwm yam tseem ceeb muaj xws li cov suab nrov qis thiab qis-dropou tvoltage.
Cov cuab yeej yog sab hauv kev them nyiaj kom ruaj khov nrog 0-Ω sib npaug series tsis kam (ESR) capacitors.Cov txiaj ntsig tseem ceeb no ua rau kev siv cov nqi qis, me me ceramic capacitors.Tus nqi-zoo capacitors uas muaj ntau dua kev tsis ncaj ncees voltagesand kub derating kuj siv tau yog tias xav tau Cov TLV1117LV series muaj nyob rau hauv ib pob SOT-223.

Yam khoom

HOM	Kev piav qhia
Qeb	Integrated Circuits (ICs) PMIC - Voltage Regulators - Linear
Mfr	Texas Instruments
Series	-
Pob	Daim kab xev & Reel (TR) Daim kab xev (CT) Digi-Reel®
SPQ
Yam khoom	Active
Output Configuration	Qhov zoo
Hom tso zis	Tsau
Tus naj npawb ntawm Regulators	1
Voltage - Input (Max)	5.5v ua
Voltage - Tso zis (Min/Fixed)	3.3v ua
Voltage - Tso zis (Max)	-
Voltage poob siab (Max)	1.3V @ 800mA
Tam sim no - Tso zis	1A
Tam sim no - Quiescent (Iq)	100 µA
PSRR	75dB (120Hz)
Tswj Nta	-
Kev tiv thaiv nta	Tshaj tam sim no, Tshaj Kub
Ua haujlwm kub	-40 ° C ~ 125 ° C
Mounting Hom	Nto Mount
Pob / Case	TO-261-4, TSO-261AA
Cov Khoom Muag Khoom Pob	TSO-223-4
Base Product Number	TIAB SA 1117

LDO regulator?

LDO, los yog tsawg dropout regulator, yog ib tug tsawg dropout linear regulator.Qhov no yog txheeb ze rau cov tsoos linear regulator.Cov kab ke kev tswj hwm ib txwm muaj, xws li 78XX series ntawm chips, yuav tsum muaj qhov hluav taws xob input tsawg kawg yog 2V ~ 3V siab tshaj qhov tso zis hluav taws xob, txwv tsis pub, lawv yuav tsis ua haujlwm zoo.Tab sis qee zaum, qhov xwm txheej zoo li no hnyav dhau, xws li 5V txog 3.3V, qhov sib txawv ntawm qhov kev tawm tswv yim thiab cov zis tsuas yog 1.7v, uas tsis ua raws li cov kev ua haujlwm ntawm cov khoom siv linear regulators.Nyob rau hauv teb rau qhov teeb meem no, chip manufacturers tau tsim LDO-hom voltage conversion chips.
Ib qho LDO yog ib qho kev tswj xyuas uas siv lub transistor lossis field-effect tube (FET) ua haujlwm hauv nws cheeb tsam saturation los tsim cov kev tswj cov zis hluav taws xob los ntawm kev rho tawm qhov hluav taws xob ntau dhau los ntawm qhov hluav taws xob input ntawm daim ntawv thov.Qhov hluav taws xob tso tawm hluav taws xob yog qhov sib txawv tsawg kawg nkaus ntawm qhov hluav taws xob input thiab cov zis hluav taws xob uas xav tau rau tus tswj hwm kom tswj tau cov zis hluav taws xob hauv 100mV saum toj no lossis qis dua nws tus nqi nominal.Cov zis hluav taws xob zoo LDO (tsis tshua muaj tso tawm) regulators feem ntau siv lub hwj chim transistor (tseem hu ua lub hloov khoom siv) raws li PNP.no transistor tso cai rau saturate ces tus regulator yuav muaj ib tug tsis tshua muaj dropout voltage, feem ntau nyob ib ncig ntawm 200mV;los ntawm kev sib piv, cov pa hluav taws xob tswj kev siv NPN sib xyaw fais fab transistors muaj qhov tso tawm ntawm ib ncig ntawm 2V.Qhov tso zis tsis zoo LDO siv NPN raws li nws cov khoom xa tuaj thiab ua haujlwm hauv hom zoo sib xws rau PNP cov khoom ntawm qhov zoo tso tawm LDO.

Cov kev tsim kho tshiab siv MOS fais fab transistors, uas muaj peev xwm muab qhov qis tshaj tawm hluav taws xob.Nrog lub zog MOS, tsuas yog qhov poob qis los ntawm kev tswj hwm yog tshwm sim los ntawm ON tsis kam ntawm cov khoom siv hluav taws xob tam sim no.Yog hais tias lub load yog me me, qhov voltage poob ua nyob rau hauv no txoj kev tsuas yog ob peb kaum millivolts.
DC-DC txhais tau hais tias DC rau DC (kev hloov pauv ntawm qhov sib txawv ntawm cov khoom siv DC) thiab txhua yam khoom siv uas ua tau raws li lub ntsiab lus no tuaj yeem hu ua DC-DC converter, suav nrog LDOs, tab sis cov ntsiab lus dav dav yog hu rau cov khoom siv uas DC rau DC tau ua tiav los ntawm kev hloov pauv. .
LDO sawv cev rau qhov tsis tshua muaj hluav taws xob poob qis, uas tau piav qhia hauv ib nqe lus: Tus nqi qis, tsis tshua muaj suab nrov, thiab qis qis tam sim no ntawm qhov qis qis qis (LDO) linear regulator yog nws qhov zoo tshaj.Nws kuj yuav tsum tau ob peb lwm yam, feem ntau tsuas yog ib los yog ob tug bypass capacitor.Tshiab LDO linear regulators tuaj yeem ua tiav cov lus qhia hauv qab no: tso suab nrov ntawm 30μV, PSRR ntawm 60dB, thiab quiescent tam sim no ntawm 6μA (TI's TPS78001 ua tiav Iq = 0.5uA), thiab qhov hluav taws xob poob ntawm tsuas yog 100mV (TI pawg tsim tawm LDOs nrog kev thov. 0.1 mV).Qhov laj thawj tseem ceeb yog vim li cas LDO linear regulators tuaj yeem ua tiav qhov kev ua tau zoo no yog tias cov raj xa hluav taws xob hauv lawv yog P-channel MOSFET, thaum cov neeg tswj xyuas cov kab ncaj nraim siv PNP transistors.P-channel MOSFET yog qhov hluav taws xob-tsav thiab tsis xav tau tam sim no, yog li nws zoo heev txo cov khoom siv tam sim no los ntawm nws tus kheej;ntawm qhov tod tes, nyob rau hauv circuits nrog PNP transistors, tiv thaiv PNP Ntawm qhov tod tes, nyob rau hauv circuits nrog PNP transistors, qhov voltage poob ntawm cov tswv yim thiab cov zis yuav tsum tsis txhob tsawg dhau los tiv thaiv PNP transistor los ntawm saturating thiab txo cov zis muaj peev xwm;qhov hluav taws xob poob thoob plaws P-channel MOSFET yog kwv yees li qhov sib npaug ntawm cov khoom ntawm cov khoom tso tawm tam sim no thiab qhov kev tawm tsam.Txij li thaum qhov kev tiv thaiv ntawm MOSFET tsawg heev, qhov hluav taws xob poob thoob plaws nws tsawg heev.

Yog hais tias cov input thiab output voltages nyob ze heev, nws yog qhov zoo tshaj plaws los siv LDO regulator, uas tuaj yeem ua tau zoo heev.Yog li, LDO regulators feem ntau yog siv nyob rau hauv daim ntawv thov qhov twg lub lithium-ion roj teeb voltage hloov mus rau 3V tso zis voltage.Txawm hais tias lub roj teeb lub zog tsis siv rau kaum feem pua tsawg kawg, LDO regulator tseem tuaj yeem ua kom lub sijhawm ua haujlwm ntev roj teeb nrog lub suab qis.
Yog hais tias cov input thiab output voltages tsis nyob ze heev, ib tug switching DCDC yuav tsum tau txiav txim siab vim hais tias, raws li tau pom los ntawm lub hauv paus ntsiab lus saum toj no, lub input tam sim no ntawm LDO yog sib npaug zos rau cov zis tam sim no, thiab yog hais tias lub voltage poob yog loj heev, lub zog siv hauv LDO loj dhau thiab tsis muaj txiaj ntsig zoo.
DC-DC converters muaj xws li step-up, step-down, step-up/down, thiab inverting circuits.Qhov zoo ntawm DC-DC converters yog kev ua haujlwm siab, thiab muaj peev xwm tso tawm cov khoom siv hluav taws xob siab thiab qis qis qis.Nrog rau kev sib xyaw ua ke, ntau lub DC-DC converters tshiab yuav tsum tsuas yog ob peb sab inductors thiab lim capacitors.Txawm li cas los xij, cov zis pulsation thiab hloov suab nrov ntawm cov tswj fais fab no yog siab thiab tus nqi kuj yog siab heev.
Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntawm semiconductor technology, nto-mount inductors, capacitors, thiab cov khoom siv hluav taws xob sib xyaw ua ke tau dhau los ua cov nqi me me.Piv txwv li, rau qhov input voltage ntawm 3V, qhov tso zis ntawm 5V / 2A tuaj yeem tau txais los ntawm kev siv lub chip NFET.Thib ob, rau kev siv hluav taws xob me me rau nruab nrab, cov nqi qis, cov pob me me tuaj yeem siv tau.Tsis tas li ntawd, yog tias qhov hloov pauv tau nce mus rau 1MHz, nws tuaj yeem txo cov nqi thiab siv cov inductors me me thiab capacitors.Qee cov khoom siv tshiab kuj ntxiv ntau yam tshiab xws li pib muag, kev txwv tam sim no, PFM, lossis PWM hom xaiv.
Feem ntau, kev xaiv ntawm DCDC rau kev txhawb nqa yog qhov yuav tsum tau ua.Rau ib qho nyiaj, qhov kev xaiv ntawm DCDC lossis LDO yog qhov sib piv ntawm cov nqi, kev ua haujlwm, suab nrov, thiab kev ua haujlwm.

Qhov tseem ceeb sib txawv

Ib qho LDO yog lub micro-power low dropout linear regulator uas feem ntau muaj suab nrov tsawg thiab muaj lub Hwj Chim Loj Loj (PSRR).
Lub LDO yog lub cim tshiab ntawm kev sib koom ua ke ntawm kev tswj hwm, uas txawv feem ntau los ntawm kev sim hauv qhov LDO yog ib qho me me ntawm nti (SoC) nrog kev siv tus kheej tsawg heev.Nws tuaj yeem siv rau kev tswj cov channel tseem ceeb tam sim no, cov nti tau koom ua ke MOSFETs nrog qis heev hauv-kab ntawm kev ua haujlwm, Schottky diodes, piv txwv cov resistors, voltage divider resistors, thiab lwm yam khoom siv hluav taws xob, thiab muaj kev tiv thaiv tam sim no, dhau-kub. kev tiv thaiv, precision siv qhov chaw, qhov sib txawv amplifier, ncua sijhawm, thiab lwm yam. PG yog lub cim tshiab ntawm LDO, nrog rau txhua qhov tso zis hauv lub xeev nws tus kheej, ncua kev ruaj ntseg fais fab mov muaj nuj nqi, kuj tseem hu ua Power Good, piv txwv li "lub zog zoo lossis lub zog ruaj khov" .

qauv thiab txoj cai

Tus qauv thiab lub hauv paus ntsiab lus ntawm kev ua.
Cov qauv ntawm LDO tsis tshua muaj kev tso tawm cov kab hluav taws xob feem ntau suav nrog kev pib ua haujlwm, qhov chaw tsis tu ncua tam sim no, ua kom lub zog, hloov cov khoom siv, siv qhov chaw, yuam kev amplifier, tawm tswv yim resistor network, tiv thaiv Circuit Court, thiab lwm yam. raws li hauv qab no: lub kaw lus yog powered up, yog hais tias tus enable pin yog nyob rau theem siab, lub Circuit Court pib pib, qhov tam sim no qhov chaw Circuit Court muab kev tsis ncaj ncees rau tag nrho cov Circuit Court, thiab lub reference qhov chaw voltage yog sai tsim, cov zis tawm mus tas li. nrog rau cov tswv yim thaum cov zis yog hais txog mus txog tus nqi teev, cov zis tawm tswv yim voltage tau los ntawm lub tswv yim network kuj nyob ze rau tus nqi siv voltage, lub sij hawm no qhov yuam kev amplifier yuav tso tawm cov lus tawm tswv yim voltage thiab siv voltage ntawm cov me me. yuam kev teeb liab yog amplified, thiab ces amplified los ntawm kev hloov lub raj rau cov zis, yog li tsim tsis zoo tawm tswv yim los xyuas kom meej tias cov zis voltage yog ruaj khov ntawm tus nqi teev.Ib yam li ntawd, yog hais tias qhov input voltage hloov los yog cov zis tam sim no hloov, qhov kaw-voj circuit yuav ua rau cov zis voltage tsis hloov.