PMIC-LED Driver Chip Silk Screen LP8861QPWPRQ1 IC potoloho e kopaneng
LP8861-Q1 e na le khetho ea ho khanna p FET ea kantle ho hokela phepelo e kenang ho sistimi ha ho ka ba le phoso le ho fokotsa ts'ebeliso ea motlakase ea hajoale le ea standby.Sesebelisoa se ka fokotsa
LED ea hajoale e ipapisitse le mocheso o lekantsoeng ka sensor ea kantle ea NTC ho sireletsa LED ho tsoa mochesong le ho lelefatsa bophelo ba LED.
Maqhubu a motlakase a kenang bakeng sa LP8861-Q1 a tsoa ho 4.5 V ho isa ho 40 V ho ts'ehetsa boemo ba ho emisa / ho qala le ho lahla thepa.LP8861-Q1 e kopanya likarolo tse ngata tsa ho bona liphoso le ts'ireletso.
Litšobotsi tsa Sehlahisoa
| MOFUTA | TLHALOSO |
| Sehlopha | Lipotoloho tse Kopantsoeng (ICs) PMIC - Bakhanni ba LED |
| Mfr | Lisebelisoa tsa Texas |
| Letoto | Likoloi, AEC-Q100 |
| Sephutheloana | Theipi le Reel (TR) Seha Tape (CT) Digi-Reel® |
| Boemo ba Karolo | E sebetsa |
| Mofuta | DC DC Regulator |
| Topology | SEPIC, Mohato-Holimo (Boost) |
| Liphetoho tsa ka hare | Ee |
| Palo ea Litholoana | 4 |
| Voltage - Phepelo (Mots) | 4.5V |
| Voltage - Supply (Boholo) | 40V |
| Voltage - Output | 45V |
| Hona joale - Output / Channel | 100mA |
| Khafetsa | 300kHz ~ 2.2MHz |
| Ho fifala | PWM |
| Lisebelisoa | Likoloi, Backlight |
| Mocheso oa ho sebetsa | -40°C ~ 125°C (TA) |
| Mofuta oa ho Beha | Thaba e kaholimo |
| Sephutheloana / Taba | 20-PowerTSSOP (0.173", 4.40mm Bophara) |
| Sephutheloana sa Sesebelisoa sa Bafani | 20-HTSSOP |
| Nomoro ea Sehlahisoa sa Motheo | LP8861 |
Mokhanni oa LED
Mokhanni oa LED ke eng?
Mokhanni oa LED ke sesebelisoa sa elektroniki se fetotsoeng ka matla se tsamaisang ts'ebetso e tloaelehileng ea lebone la LED kapa kopano ea module ea LED.Ka lebaka la litšobotsi tsa conduction tsa LED PN junction, e khona ho ikamahanya le matla a motlakase le mefuta e sa tšoaneng ea phepelo ea motlakase e moqotetsane haholo, ho kheloha hanyenyane ho ka 'na ha se ke ha khona ho khantša LED kapa khanya ea khanya e fokotsehile haholo, kapa ea khutsufatsa bophelo. ea chip kapa esita le ho chesoa.Lisebelisoa tsa morao-rao tsa motlakase oa indasteri le lisebelisoa tse tloaelehileng tsa matla a betri ha li tšoanelehe bakeng sa phepelo e tobileng ho li-LED, 'me mokhanni oa LED ke karolo ea elektronike e ka khannang LED ho sebetsa ka matla a holimo kapa hona joale.
Lisebelisoa
Lisebelisoa tsa Bakhanni ba LED.
Kaha li-LED li sebelisoa hoo e batlang e le sebakeng se seng le se seng sa lisebelisoa tsa elektronike, tse nang le phapang e batlang e sa lebelloa ka matla a khanyang, 'mala o khanyang, le ho laola / ho tima, bakhanni ba LED ba fetohile lisebelisoa tsa servo tse batlang li le mong ho ea ho a le mong, ho etsa hore ho be le malapa a fapaneng a lisebelisoa.Mokhanni o bonolo ka ho fetisisa oa LED (haeba u ka o bitsa joalo) mohlomong ke karolo e le 'ngoe kapa tse' maloa tse hanyetsanang letoto la potoloho e arolang motlakase le motlakase, 'me ha se sehlahisoa se ikemetseng ho hang.Bakeng sa lits'ebetso tse akaretsang tsa khoebo tse hlokang tlhahiso e tsitsitseng ea hona joale le ea motlakase, ho entsoe mefuta e mengata ea tharollo ea sistimi e nang le matla a nepahetseng a ho lokisa matla.Ho phethahala ha litharollo tsena hangata ho hloka moralo o rarahaneng oa potoloho, e leng motheo oa ts'ebeliso e kopaneng ea li-IC tsa mokhanni oa LED.Ka ho theha lipotoloho tse fapaneng tsa tšehetso sebakeng sa li-IC tsa mokhanni oa LED, litharollo li ka hahuoa bakeng sa lits'ebetso tse fapaneng tsa LED, ho tloha ho li-backlights tse nyane tsa mohala oa thekeng le li-driver mabone a li-keypad ho ea ho mabone a marang-rang a LED a matla le lipontšo tse kholo tsa kantle tsa LED.
Moralo le phepelo ea li-driver tsa LED tse nang le matla a phahameng hangata li etsoa ke lik'hamphani tse ikhethang.Lik'hamphani tsena li li kenya ka li-module ebe li li fa bahlahisi ba lihlahisoa tsa LED tse qetellang li sebelisoa.Bohlokoa bo ikhethang ba bakhanni ba LED lits'ebetsong tsa LED le mefuta e mengata ea litlhoko tsa basebelisi li etsa hore mokhanni oa LED IC, pelo ea mokhanni oa LED, e be ntho ea bohlokoa ho ketane eohle ea theknoloji.Mokhanni ke karolo ea mantlha ea mabone a LED.Ka kholo ea theknoloji ea LED ea chip, boleng ba mehloli ea leseli la LED bo fetohile bo ka tšeptjoang hoo hangata ho hlōleha ha lisebelisoa tsa LED ho tsoa ho mokhanni.
Tlhaloso
LP8861-Q1 ke koloi e sebetsang hantle haholo, e tlase-EMI, e bonolo ho sebelisa mokhanni oa LED o nang le matlafatso e kopaneng / sefetoleli sa SEPIC.E na le lisinki tse 'ne tse nepahetseng haholo tsa hajoale tse ka fanang ka taolo ea khanya e phahameng ea dimming ka lets'oao la ho kenya PWM.
Mofetoleli oa boost/SEPIC o na le taolo ea motlakase e feto-fetohang e ipapisitseng le li-voltages tsa hona joale tsa sink ea hlooho ea LED.Karolo ena e fokotsa tšebeliso ea matla ka ho fetola motlakase hore o be boemong bo tlase bo lekaneng maemong 'ohle.Mofetoleli oa boost/SEPIC o tšehetsa sekhahla sa ho chencha maqhubu le khokahano ea kantle e nang le phini e inehetseng.Maqhubu a fapaneng a feto-fetohang a lumella LP8861-Q1 ho qoba tšitiso bakeng sa sehlopha sa seea-le-moea sa AM.
LP8861-Q1 e na le khetho ea ho khanna p-FET ea kantle ho hokela phepelo ea lisebelisoa ho sistimi ha ho ka ba le phoso le ho fokotsa ts'ebeliso ea motlakase ea hajoale le ea standby.Sesebelisoa se ka fokotsa hona joale sa LED se ipapisitseng le mocheso o lekantsoeng ka sensor ea kantle ea NTC ho sireletsa LED ho tsoa mochesong le ho lelefatsa bophelo ba LED.
Maqhubu a motlakase a kenang bakeng sa LP8861-Q1 a tsoa ho 4.5 V ho isa ho 40 V ho ts'ehetsa boemo ba ho emisa / ho qala le ho lahla thepa.LP8861-Q1 e kopanya likarolo tse ngata tsa ho bona liphoso le ts'ireletso.
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