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Kufotokozera mwachidule:

Ma LDO amagawidwa ngati ma LDO otulutsa mpweya wabwino kapena ma LDO otuluka.zowongolera zabwino zotulutsa ma LDO (otsika otsika): gwiritsani ntchito transistor yamagetsi (yotchedwanso chipangizo chosinthira) ngati PNP.transistor iyi imalola machulukitsidwe kotero wowongolera amatha kukhala ndi voteji otsika kwambiri, nthawi zambiri kuzungulira 200mV;ma LDOs otulutsa zoipa amagwiritsa ntchito NPN ngati chipangizo chake chosinthira ndikugwira ntchito mofanana ndi ma LDO abwino.Kutulutsa koyipa kwa LDO kumagwiritsa ntchito NPN ngati chipangizo chake chosinthira ndipo imagwira ntchito mofanana ndi chipangizo cha PNP cha LDO yabwino.

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Tsatanetsatane wa Zamalonda

Zogulitsa Tags

Makhalidwe a Zamalonda

TYPE	DESCRIPTION
Gulu	Magawo Ophatikizana (ICs) Zotsatira PMIC Ma Voltage Regulators - Linear
Mfr	Texas Instruments
Mndandanda	Magalimoto, AEC-Q100
Phukusi	Tape & Reel (TR) Dulani Tepi (CT) Digi-Reel®
SPQ	3000 T&R
Mkhalidwe wa Zamalonda	Yogwira
Kukonzekera kwa Zotulutsa	Zabwino
Mtundu Wotulutsa	Zosinthika
Chiwerengero cha Owongolera	1
Mphamvu yamagetsi - Kulowetsa (Max)	6.5V
Mphamvu yamagetsi - Kutulutsa (Mphindi / Zokhazikika)	0.8V
Mphamvu yamagetsi - Kutulutsa (Max)	5.2V
Kutsika kwa Voltage (Max)	0.3V @ 2A
Zamakono - Zotuluka	2A
PSRR	42dB ~ 25dB (10kHz ~ 500kHz)
Control Features	Yambitsani
Mawonekedwe a Chitetezo	Kutentha Kwambiri, Reverse Polarity
Kutentha kwa Ntchito	-40°C ~ 150°C (TJ)
Mtundu Wokwera	Surface Mount
Phukusi / Mlandu	20-VFQFN Yowonekera Pad
Phukusi la chipangizo cha Supplier	20-VQFN (3.5x3.5)
Nambala Yoyambira Yogulitsa	TPS7A5201

Gulu

Upangiri Wowonjezera: Magetsi otsika ndiye kusiyana kochepa pakati pa voteji yolowera ndi voteji yomwe ikufunika kuti wowongolera azisunga voteji mkati mwa 100mV pamwamba kapena pansi pa mtengo wake.

Kusankha yankho

Boost nthawi zonse ndi chisankho chabwino kwa DCDC, buck, kaya kusankha DCDC kapena LDO, kufananiza ndi mtengo, mphamvu, phokoso, ndi magwiridwe antchito.

❶ Pamene zolowetsa ndi zotulutsa zili pafupi, ndi bwino kusankha chowongolera cha LDO, chomwe chingathe kuchita bwino kwambiri.

Chitsanzo: Owongolera a LDO amagwiritsidwa ntchito nthawi zambiri pakugwiritsa ntchito pomwe mphamvu ya batri ya lithiamu-ion imasinthidwa kukhala voteji ya 3V.Ngakhale 10% yomaliza ya mphamvu ya batri sikugwiritsidwa ntchito, wolamulira wa LDO amatsimikizirabe nthawi yayitali yogwiritsira ntchito batri ndi phokoso lochepa.

❷Pamene magetsi olowera ndi zotulutsa sizili pafupi kwambiri, ganiziraninso mtundu wa kusintha kwa DCDC chifukwa kulowetsa kwa LDO ndi kofanana ndi zomwe zimachokera panopa.Ngati kutsika kwamagetsi kuli kwakukulu kwambiri, mphamvu zomwe zimagwiritsidwa ntchito mu LDO ndi zazikulu kwambiri ndipo mphamvu zake sizikhala zapamwamba.

Makhalidwe a zowongolera zama mzere wachikhalidwe

Ochiritsira liniya ochiritsira: kawirikawiri amafuna voteji athandizira Uin kukhala osachepera 2V ~ 3V apamwamba kuposa linanena bungwe voteji About (monga 78XX mndandanda wa tchipisi), apo ayi sangagwire ntchito bwino.Koma mkhalidwe wotero ndi wovuta kwambiri.Ngati 5V kuti 3.3V, kusiyana voteji pakati athandizira ndi linanena bungwe yekha 1.7V, amene si kukumana zikhalidwe ntchito ya ochiritsira liniya chowongolera.Kutsika kwake voteji kwa ochiritsira liniya chowongolera ntchito NPN pawiri mphamvu transistor ndi mozungulira 2V.

Ndi ma transistors amphamvu a MOS ndizotheka kupereka voteji yotsika kwambiri.Ndi mphamvu ya MOS, kutsika kwamagetsi kokha kudzera pa chowongolera kumayambitsidwa ndi kukana kwa ON kwa katundu wapano wa chipangizo chamagetsi.Ngati katunduyo ndi wochepa, dontho lamagetsi lomwe limapangidwa motere ndi ma millivolts ochepa chabe.

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