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1.LDO, kapa low dropout regulator, ke selaoli se tlase sa dropout se sebelisang transistor kapa field effect tube (FET) e sebetsang sebakeng sa eona sa saturation ho tlosa voltage e feteletseng ho motlakase o kentsoeng ho hlahisa motlakase o laoloang.
Lintlha tse 'nè tsa sehlooho ke Dropout, Noise, Power Supply Rejection Ratio (PSRR), le Quiscent Current Iq.
Likarolo tsa mantlha: potoloho ea ho qala, yuniti e sa fetoheng ea mohloli o lulang o le teng, potoloho e nolofalletsang, ntho ea ho lokisa, mohloli oa litšupiso, amplifier ea liphoso, netweke ea ho hanyetsa maikutlo le potoloho ea ts'ireletso, jj.

2.Molao-motheo oa Ts'ebetso
Potoloho ea mantlha ea LDO e na le letoto la taolo ea VT, li-resistors tsa sampole R1 le R2, le amplifier ea papiso A.
Sistimi e matlafatsoa, ​​​​haeba pini ea ho nolofalletsa e maemong a holimo, potoloho e qala, potoloho ea mohloli o sa feleng e fana ka leeme ho potoloho eohle, motlakase oa mohloli oa litšupiso o thehoa kapele, 'me motlakase o sa laoloang o sebelisoa e le motlakase. ea phepelo ea motlakase, motlakase oa litšupiso o sebelisoa e le motlakase oa karolo e mpe ea amplifier ea phoso, netweke ea karabo ea resistor e arola motlakase o tsoang 'me e fumana motlakase oa maikutlo, motlakase ona oa maikutlo o kenyeletsoa sebakeng se le seng sa sebali sa phoso, le tse mpe Molaetsa ona oa maikutlo o kenyeletsoa lehlakoreng la isotropic la comparator ea liphoso 'me o bapisoa le voltage e mpe ea referense.Phapang pakeng tsa li-voltages tse peli e matlafatsoa ke amplifier ea phoso ho laola ka ho toba heke ea lisebelisoa tsa ho fetola matla, 'me tlhahiso ea LDO e laoloa ka ho fetola boemo ba ho tsamaisa tube ea ho fetola, ke hore, Vout = (R1 + R2) / R2 × Vref
Taolo ea "linear" ea 'nete e tlase e boetse e na le mesebetsi e meng e joalo ka ts'ireletso ea potoloho e khuts'oane, ho tima ha overvoltage, ho koala ha mocheso, ts'ireletso ea khokahanyo ea morao-rao, jj.

3.Melemo, mathata, le boemo ba hona joale
Li-linear regulators tsa Low Dropout Voltage (LDO) li theko e tlase, lerata le tlase, hona joale le khutsitseng, likarolo tse 'maloa tsa kantle, hangata ke li-bypass capacitor tse le' ngoe kapa tse peli, 'me li na le lerata le tlase haholo le tekanyo e phahameng ea ho hana phepelo ea matla (PSRR).LDO ke Sistimi e nyane ho Chip (SoC) e nang le tšebeliso e tlase haholo.E ka sebelisoa bakeng sa taolo ea mocha oa morao-rao 'me e na le li-circuits tse kopantsoeng tsa lisebelisoa tse kang MOSFET tse nang le khanyetso e tlaase haholo ea marang-rang, li-diode tsa Schottky, li-resistors tsa sampling, le li-voltage dividers, hammoho le tšireletso ea morao-rao, tšireletso e feteletseng ea mocheso, mehloli e nepahetseng ea litšupiso, li-amplifiers tse fapaneng, li- delayers, joalo-joalo PG ke moloko o mocha oa LDO o nang le boitlhahlobo bakeng sa boemo bo bong le bo bong ba tlhahiso le ho lieha ho fana ka matla a sireletsehileng, ao hape a ka bitsoang Power Good, ke hore "power good or power stable" .Li-LDO tse ngata li hloka capacitor e le 'ngoe feela ho kenyelletsong le e' ngoe ho tsoa bakeng sa ts'ebetso e tsitsitseng.
Li-LDO tse ncha li ka finyella lintlha tse latelang: lerata la tlhahiso ea 30µV, PSRR ea 60dB, hona joale e khutsitseng ea 6µA, le ho theoha ha motlakase oa 100mV feela.Lebaka le ka sehloohong la ts'ebetso ena e ntlafetseng ea li-linear regulator tsa LDO ke hore regulator e sebelisitsoeng ke P-channel MOSFET, e tsamaisoang ke motlakase 'me ha e hloke hona joale, e fokotsa hona joale e sebelisoang ke sesebelisoa ka boeona le ho theoha ha motlakase ho eona.lerotholi le batla le lekana le sehlahisoa sa tlhahiso ea hona joale le ho hanyetsa.Ho theoha ha motlakase ho pholletsa le MOSFET ho tlase haholo ka lebaka la ho hanyetsa ha eona ho tlase.Li-linear regulators tse tloaelehileng li sebelisa li-transistors tsa PNP.Lipotolohong tse nang le li-transistors tsa PNP, ho theoha ha motlakase pakeng tsa ho kenya letsoho le ho tsoa ha hoa lokela ho ba tlaase haholo ho thibela PNP transistor hore e se ke ea kena ka har'a saturation le ho fokotsa bokhoni ba tlhahiso.