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luv luv piav qhia:

Ib qho LDO, lossis qis qis qis qis, yog lub tshuab qis qis qis uas siv lub tshuab hluav taws xob lossis lub tshuab hluav taws xob ua haujlwm (FET) ua haujlwm hauv nws cheeb tsam saturation kom rho tawm cov hluav taws xob ntau dhau los ntawm cov ntaub ntawv siv hluav taws xob los tsim cov khoom siv hluav taws xob.

Plaub lub ntsiab tseem ceeb yog Dropout, Suab nrov, Lub Hwj Chim Tsis Txaus Siab (PSRR), thiab Quiescent Current Iq.

Lub ntsiab Cheebtsam: pib Circuit Court, qhov tam sim no qhov chaw bias unit, enabling Circuit Court, kho lub caij, siv qhov chaw, yuam kev amplifier, tawm tswv yim resistor network thiab tiv thaiv circuit, thiab lwm yam.

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Product Detail

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HOM	Kev piav qhia
Qeb	Integrated Circuits (ICs) PMIC Voltage Regulators - Tawm
Mfr	Texas Instruments
Series	Automotive, AEC-Q100
Pob	Daim kab xev & Reel (TR) Daim kab xev (CT) Digi-Reel®
SPQ	3000 T&R
Yam khoom	Active
Output Configuration	Qhov zoo
Hom tso zis	Kho tau
Tus naj npawb ntawm Regulators	1
Voltage - Input (Max)	6.5v ua
Voltage - Tso zis (Min/Fixed)	0,8v ua
Voltage - Tso zis (Max)	6V
Voltage poob siab (Max)	0.5V @ 1A
Tam sim no - Tso zis	1A
Tam sim no - Quiescent (Iq)	100 µA
Tam sim no - Supply (Max)	350 µA
PSRR	48dB ~ 38dB (100Hz ~ 1MHz)
Tswj Nta	Pab
Kev tiv thaiv nta	Tshaj tam sim no, Tshaj Kub, Rov qab Polarity, Nyob rau hauv Voltage Lockout (UVLO)
Ua haujlwm kub	-40 ° C ~ 125 ° C (TJ)
Mounting Hom	Nto Mount
Pob / Case	8-VDFN nthuav tawm Pad
Cov Khoom Muag Khoom Pob	8-XIV (3x3)
Base Product Number	TPS7A8101

Plaub lub ntsiab tseem ceeb yog Dropout, Suab nrov, Lub Hwj Chim Tsis Txaus Siab (PSRR), thiab Quiescent Current Iq.

Txoj Cai Kev Ua Haujlwm

Lub LDO yooj yim Circuit Court muaj series regulator VT, sampling resistors R1 thiab R2, thiab sib piv amplifier A

Lub kaw lus yog powered, yog tias tus pin enabled nyob rau theem siab, Circuit Court pib, qhov tam sim no qhov chaw Circuit Court muab kev tsis ncaj ncees rau tag nrho cov Circuit Court, qhov kev siv qhov hluav taws xob tau tsim sai, thiab qhov tsis raug cai input voltage yog siv raws li qhov voltage. ntawm cov khoom siv hluav taws xob, qhov siv hluav taws xob yog siv los ua qhov tsis zoo rau theem input voltage ntawm qhov yuam kev amplifier, lub resistor tawm tswv yim network faib cov zis voltage thiab tau txais cov lus tawm tswv yim voltage, qhov kev tawm tswv yim voltage yog nkag mus rau tib lub davhlau ya nyob twg ntawm qhov yuam kev sib piv, thiab qhov tsis zoo Qhov kev tawm tswv yim voltage yog nkag mus rau sab isotropic ntawm qhov yuam kev sib piv thiab piv nrog qhov tsis zoo siv voltage.Qhov sib txawv ntawm ob qhov voltages yog amplified los ntawm qhov yuam kev amplifier kom ncaj qha tswj lub rooj vag ntawm lub hwj chim kho lub caij, thiab cov zis ntawm LDO yog tswj los ntawm kev hloov lub conduction lub xeev ntawm lub adjusting raj, piv txwv li Vout = (R1 + R2) / R2 × Vref

Qhov tseeb qis qis qis qis qis qis kuj tseem muaj lwm yam haujlwm xws li thauj khoom luv luv Circuit Court tiv thaiv, overvoltage shutdown, thermal shutdown, rov qab kev twb kev txuas tiv thaiv, thiab lwm yam.

Qhov zoo, qhov tsis zoo, thiab cov xwm txheej tam sim no

Low Dropout Voltage (LDO) linear regulators yog tus nqi qis, tsis tshua muaj suab nrov, tsis tshua muaj quiescent tam sim no, ob peb cov khoom siv sab nraud, feem ntau tsuas yog ib lossis ob lub bypass capacitor, thiab muaj suab nrov tsawg thiab lub zog tsis txaus siab (PSRR).Lub LDO yog qhov me me ntawm Chip (SoC) nrog kev siv tus kheej tsawg heev.Nws tuaj yeem siv rau kev tswj hwm channel tseem ceeb tam sim no thiab muaj kev sib koom ua ke ntawm cov khoom siv hluav taws xob xws li MOSFETs uas tsis tshua muaj nyob rau hauv-kab-ua haujlwm, Schottky diodes, sampling resistors, thiab voltage dividers, nrog rau kev tiv thaiv dhau-tam sim no, tiv thaiv kub dhau, precision siv qhov chaw, qhov sib txawv amplifiers, ncua sij hawm, thiab lwm yam. Lub PG yog ib tiam tshiab ntawm LDO nrog rau kev kuaj tus kheej rau txhua lub xeev tso zis thiab ncua sij hawm muaj kev ruaj ntseg fais fab mov, uas tuaj yeem hu ua Power Good, piv txwv li "lub zog zoo lossis lub zog ruaj khov" .Ntau LDOs yuav tsum tsuas yog ib lub capacitor ntawm cov tswv yim thiab ib qho ntawm cov zis rau kev ua haujlwm ruaj khov.

Cov LDOs tshiab tuaj yeem ua tiav cov lus qhia hauv qab no: cov suab nrov ntawm 30µV, PSRR ntawm 60dB, quiescent tam sim no ntawm 6µA, thiab qhov hluav taws xob poob ntawm tsuas yog 100mV.Lub ntsiab yog vim li cas rau qhov kev txhim kho ntawm LDO linear regulators yog hais tias tus regulator siv yog ib tug P-channel MOSFET, uas yog voltage-tsav thiab yuav tsum tsis muaj tam sim no, txo cov tam sim no noj los ntawm lub ntaus ntawv nws tus kheej thiab lub voltage poob thoob plaws nws.poob yog roughly sib npaug rau cov khoom ntawm cov zis tam sim no thiab cov on-resistance.Qhov hluav taws xob poob thoob plaws MOSFET yog qhov tsawg heev vim nws tsis tshua muaj kev ua haujlwm.Cov kab hluav taws xob feem ntau siv PNP transistors.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 mus rau hauv saturation thiab txo cov zis muaj peev xwm.

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