I-PMIC-LED Driver Chip Silk Screen LP8861QPWPRQ1 IC Isekethe edibeneyo
I-LP8861-Q1 inokhetho lokuqhuba i-p FET yangaphandle ukuqhawula unikezelo lwegalelo kwisistim xa kuthe kwakho impazamo kunye nokunciphisa inrush yangoku kunye nokusetyenziswa kwamandla okulinda.Isixhobo sinokunciphisa
I-LED yangoku esekelwe kwiqondo lokushisa elilinganiswe kunye ne-NTC sensor yangaphandle ukukhusela i-LED ekugqithiseni kunye nokwandisa ubomi be-LED.
Uluhlu lwegalelo lombane we-LP8861-Q1 luvela kwi-4.5 V ukuya kwi-40 V ukuxhasa ukumisa imoto / ukuqala kunye nomthwalo wokulahla imeko.I-LP8861-Q1 idibanisa ukufumanisa iimpazamo kunye neempawu zokukhusela.
Iimpawu zeMveliso
| UHLOBO | INKCAZO |
| Udidi | IiSekethe eziDityanisiweyo (ICs) I-PMIC - Abaqhubi be-LED |
| Mfr | Texas Instruments |
| Uthotho | Iimoto, AEC-Q100 |
| Iphakheji | Iteyiphu & neReel (TR) Sika iTape (CT) Digi-Reel® |
| Ubume benxalenye | Iyasebenza |
| Uhlobo | DC DC Regulator |
| I-Topology | I-SEPIC, iNyathelo-phezulu (Boost) |
| Iiswitshi zangaphakathi | Ewe |
| Inani leZiphumo | 4 |
| Umbane-Ubonelelo (uMzu) | 4.5V |
| Umbane-Ubonelelo (Ubukhulu) | 40V |
| Voltage - Imveliso | 45V |
| Okwangoku -Isiphumo / Isitishi | 100mA |
| Ukuphindaphinda | 300kHz ~ 2.2MHz |
| Ukufiphala | PWM |
| Usetyenziso | Iimoto, Ukukhanya ngasemva |
| Ubushushu bokusebenza | -40°C ~ 125°C (TA) |
| Uhlobo lokuNqamisa | INtaba engaphezulu |
| Ipakethe / Ityala | 20-PowerTSSOP (0.173", 4.40mm Ububanzi) |
| Supplier Device Package | 20-HTSSOP |
| Inombolo yeMveliso esisiseko | I-LP8861 |
Umqhubi we-LED
Yintoni uMqhubi we-LED?
Umqhubi we-LED sisixhobo sombane esilungisiweyo sombane esiqhuba ukusebenza okuqhelekileyo kokukhanya kwe-LED okanye i-module module ye-LED.Ngenxa yeempawu zokuqhuba ze-LED PN junction, iyakwazi ukuziqhelanisa nombane kunye neenguqu zangoku zobonelelo lwamandla zimxinwa kakhulu, ukutenxa okuncinci akunakukwazi ukukhanyisa i-LED okanye ukukhanya kokukhanya kuncitshiswe kakhulu, okanye bufutshane ubomi. yetshiphu okanye nokuba itshiswe.Amandla ombane akhoyo ngoku kwimizi-mveliso kunye nombane oqhelekileyo webhetri awufanelekanga ukubonelela ngokuthe ngqo kwii-LEDs, kwaye umqhubi we-LED licandelo lombane elinokuqhuba i-LED ukuba isebenze ngeyona ndlela yombane okanye yangoku.
Usetyenziso
Ukusetyenziswa kwabaqhubi be-LED.
Njengoko ii-LED zisetyenziswa phantse kuyo yonke indawo yezicelo ze-elektroniki, kunye neenguqu eziphantse zingalindelekanga kukukhanya okukhanyayo, umbala okhanyayo, kunye nokulawula / ukuvala, abaqhubi be-LED sele bephantse babe zizixhobo ze-servo enye ukuya kwenye, ukwenza usapho olwahlukeneyo lwezixhobo.Umqhubi we-LED olula (ukuba unokuwubiza) mhlawumbi uchungechunge olunye okanye amacandelo amaninzi aphikisanayo kwisekethe eyahlula i-current kunye ne-voltage, kwaye akusiyo imveliso emele yodwa kwaphela.Ukufumana izicelo zentengiso ngokubanzi ezifuna imveliso ezinzileyo eqhubekayo yangoku kunye ne-voltage, uluhlu lwezisombululo zenkqubo enobuchule obuchanekileyo bokulungisa amandla luye lwaphuhliswa.Ukufezekiswa kwezi zisombululo kudla ngokufuna ukuyila kwesekethe eyinkimbinkimbi, eyona nto ingundoqo kukusetyenziswa okudibeneyo kwe-ICs yomqhubi we-LED.Ngokumisela iisekethe zenkxaso ezahlukeneyo kwi-periphery ye-ICs zomqhubi we-LED, izisombululo zingakhelwa izicelo ezahlukeneyo ze-LED, ukusuka kwiselula encinci yokubonisa ukukhanya kunye nokukhanyisa izitshixo zokukhanyisa izitshixo ukuya kumandla aphezulu okukhanya kwesitrato se-LED kunye neziboniso ezinkulu ze-LED zangaphandle.
Uyilo kunye nonikezelo lwezibane zamandla aphezulu egeneric abaqhubi be-LED ngokuqhelekileyo zenziwa ziinkampani zeengcali.Ezi nkampani zipakisha kwiimodyuli kwaye emva koko zinike abavelisi beemveliso zokusetyenziswa kokuphela kwe-LED.Ukubaluleka okuyingqayizivele kwabaqhubi be-LED kwizicelo ze-LED kunye noluhlu olubanzi lweemfuno zomsebenzisi zenza umqhubi we-LED we-IC, intliziyo yomqhubi we-LED, into ephambili kuyo yonke iteknoloji ye-teknoloji.Umqhubi yinxalenye ephambili yokukhanyisa kwe-LED.Ngokukhula kobuchwepheshe be-chip ye-LED, umgangatho wemithombo yokukhanya ye-LED iye yathembeka kangangokuba kwiimeko ezininzi ukusilela kwezibane ze-LED kuvela kumqhubi.
Inkcazo
I-LP8861-Q1 yimoto ephezulu-esebenzayo, i-EMI ephantsi, kulula ukuyisebenzisa umqhubi we-LED kunye ne-boost edibeneyo / isiguquli se-SEPIC.Ineesinki ezine ezichanekileyo zangoku ezinokubonelela ngolawulo lokuqaqamba komlinganiselo ophezulu we-dimming kunye nesignali ye-PWM yokufaka.
I-Boost/SEPIC converter inolawulo lombane oluguquguqukayo olusekwe kwi-LED yangoku ye-sink headroom voltages.Olu phawu lunciphisa ukusetyenziswa kwamandla ngokulungelelanisa umbane ukuya kwinqanaba elisezantsi ngokwaneleyo kuzo zonke iimeko.I-boost/SEPIC converter ixhasa i-spectrum yokutshintsha i-frequency kunye nongqamaniso lwangaphandle kunye nepini ezinikeleyo.Uluhlu olubanzi oluhlengahlengiswayo luvumela i-LP8861-Q1 ukunqanda ukuphazamiseka kwibhendi yerediyo ye-AM.
I-LP8861-Q1 inokhetho lokuqhuba i-p-FET yangaphandle ukuqhawula unikezelo lwegalelo kwisistim xa kuthe kwakho impazamo kunye nokunciphisa inrush yangoku kunye nokusetyenziswa kwamandla okulinda.Isixhobo sinokunciphisa i-LED yangoku ngokusekelwe kwiqondo lokushisa elilinganiswe kunye ne-NTC sensor yangaphandle ukukhusela i-LED ekugqithiseni kunye nokwandisa ubomi be-LED.
Uluhlu lwegalelo lombane we-LP8861-Q1 luvela kwi-4.5 V ukuya kwi-40 V ukuxhasa ukumisa imoto / ukuqala kunye nomthwalo wokulahla imeko.I-LP8861-Q1 idibanisa ukufumanisa iimpazamo kunye neempawu zokukhusela.
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