Amabwiriza yo gukoresha 3.3V ibisohoka muri AMS1117 na LM1117 hamwe nibindi bicuruzwa bihendutse

2020-12-28 AMS1117 LM1117 LDO

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LM1117 AMS1117 LDO

ibisobanuro ku bicuruzwa

AMS17 Kubera imikorere yayo myiza, irakoreshwa cyane.

Ikintu nyamukuru

Umuvuduko wa voltage ni 1.2V gusa kuri 1A isohoka, hamwe nibikorwa bigabanya imipaka, ibikorwa byo kurinda ubushyuhe bukabije, ibisohoka bya voltage neza birashobora kugera kuri 1.5%.

Amabwiriza yo gukoresha

Kubera ko voltage ntarengwa yinjiza idashobora kurenga 18V, ndagerageza kuyigumana munsi ya 14V muburyo bukoreshwa na bateri. Niba tuyihuza kumpera yinyuma yumuriro wamashanyarazi, mubisanzwe birasabwa ko ingufu ziva mumashanyarazi zihinduka zigenzurwa nka 12V. Ibikurikira nigishushanyo mbonera gikoreshwa cyane cyumuzingi.Ntabwo bisabwa gusiba ubushobozi bwimpande zombi zishusho. Umwanditsi yakoze ikizamini, muburyo butajegajega bwa DC bwinjiza, ubushobozi bwa capacitor kumpera yinjiza irashobora kuvaho, ariko birasabwa kubikomeza kugirango bihamye muri rusange. Mubyongeyeho, agaciro ka capacitance ya capacitor irashobora guhindurwa ukurikije aho ikoreshwa nyayo, ariko ntishobora kuba munsi ya 10μF.

Inzira isanzwe

Ikibazo kidasanzwe

Iyo uhujwe ninyuma yinyuma ya bimwe byo guhindura amashanyarazi, rimwe na rimwe akazi kazahagarara. Niba umuzenguruko w'imbere-uhinduranya amashanyarazi ubwayo arukuri, noneho dukeneye guhuza imbaraga zingana na 20Ω hagati yumusaruro wamashanyarazi no kwinjiza AMS1117-3.3. Nyuma yo guhuzwa, umuzenguruko wose urashobora gukora mubisanzwe.

Ibiciro bidahenze

Kubera ko iki gicuruzwa gikoreshwa mu Bushinwa nini cyane, bityo ibirango byabashinwa nabyo byateje imbere ibicuruzwa bifite ibipimo bimwe nububiko. Kuberako ibicuruzwa byabashinwa bifite ibyiza byinshi byigiciro, ibiciro byibicuruzwa byubushinwa biri hasi cyane. Igiciro guhera itariki yo kwandika iyi ngingo, LM1117MPX-3.3NOPB1000Pcs, ni $ 0.15624 kuri www.digikey.com na $ 0.468 kuri www.mouser.com. Igiciro cyikirango cyabashinwa ni $ 0.08. Niba ukeneye kumenya byinshi kubindi bicuruzwa murukurikirane rumwe, nyamuneka hamagara favkb@outlook.com.