I-PMIC-LED Driver Chip Silk Screen LP8861QPWPRQ1 IC Integrated circuit
I-LP8861-Q1 inenketho yokushayela i-p FET yangaphandle ukuze inqamule ukunikezwa kokufaka ohlelweni uma kwenzeka kuba nephutha futhi kuncishiswe ukusetshenziswa kwamandla wamanje nokubekwe eceleni.Idivayisi inganciphisa
I-LED yamanje esekelwe kuzinga lokushisa likalwa ngenzwa yangaphandle ye-NTC ukuvikela i-LED ekushiseni ngokweqile nokwelula impilo yonke ye-LED.
Ibanga lamandla kagesi okufakwayo we-LP8861-Q1 lisuka ku-4.5 V ukuya ku-40 V ukuze lisekele ukuma kwezimoto/ukuqalisa kanye nesimo sokulahla ukulayisha.I-LP8861-Q1 ihlanganisa izici eziningi zokutholwa kwamaphutha nezici zokuvikela.
Izimfanelo Zomkhiqizo
| UHLOBO | DESCRIPTION |
| Isigaba | Izifunda Ezihlanganisiwe (ICs) I-PMIC - Abashayeli be-LED |
| Mfr | Texas Instruments |
| Uchungechunge | Ezezimoto, AEC-Q100 |
| Iphakheji | I-Tape & Reel (TR) Cut Tape (CT) I-Digi-Reel® |
| Isimo Sengxenye | Iyasebenza |
| Uhlobo | I-DC DC Regulator |
| I-Topology | I-SEPIC, Step-Up (Boost) |
| I(izi)shitshi zangaphakathi | Yebo |
| Inombolo Yemiphumela | 4 |
| I-Voltage - Supply (Min) | 4.5V |
| I-Voltage - Supply (Ubukhulu) | 40V |
| I-Voltage - Okukhiphayo | 45V |
| Okwamanje - Okukhiphayo / Isiteshi | 100mA |
| Imvamisa | 300kHz ~ 2.2MHz |
| Ukufiphala | I-PWM |
| Izinhlelo zokusebenza | Izimoto, I-Backlight |
| Izinga Lokushisa Lokusebenza | -40°C ~ 125°C (TA) |
| Uhlobo Lokukhweza | INtaba Engaphezulu |
| Iphakheji / Ikesi | 20-PowerTSSOP (0.173", 4.40mm Ububanzi) |
| Iphakheji Yedivayisi Yomhlinzeki | 20-HTSSOP |
| Inombolo Yomkhiqizo Eyisisekelo | I-LP8861 |
Umshayeli we-LED
Iyini i-LED Driver?
Umshayeli we-LED iyidivayisi ye-elekthronikhi elungiswe amandla eshayela ukusebenza okuvamile kokukhanya kwe-LED noma umhlangano wemojula ye-LED.Ngenxa yezimpawu zokuqhuba ze-LED PN junction, ingakwazi ukuzivumelanisa ne-voltage kanye nokuhlukahluka kwamanje kokunikezwa kwamandla kuncane kakhulu, ukuchezuka okuncane kungase kungakwazi ukukhanyisa i-LED noma ukusebenza kahle kokukhanya kuncishiswe kakhulu, noma kufinyeze impilo. we-chip noma ngisho nokushiswa.Izimpahla zamanje zamandla ezimbonini namandla ebhethri ajwayelekile azifanelekile ukunikezwa okuqondile kuma-LED, futhi umshayeli we-LED uyingxenye ye-elekthronikhi engashayela i-LED ukuze isebenze ngevoltheji ephezulu noma yamanje.
Izinhlelo zokusebenza
Izicelo zabashayeli be-LED.
Njengoba ama-LED asetshenziswa cishe kuzo zonke izindawo zezinhlelo zokusebenza ze-elekthronikhi, ngokuhlukahluka okucishe kube okungalindelekile ekukhanyeni okukhanyayo, umbala okhanyayo, nokulawula kokuvula / ukuvala, abashayeli be-LED sebephenduke cishe amadivaysi e-servo eyodwa kuya kweyodwa, okwenza umndeni ohlukahlukene wamadivayisi.Umshayeli we-LED olula (uma ungawubiza kanjalo) cishe ingxenye eyodwa noma eminingana ephikisana nochungechunge oluhambisana nesekhethi ehlukanisa amandla amanje kanye ne-voltage, futhi akuwona umkhiqizo ozimele nhlobo.Ukuze uthole izinhlelo zokusebenza ezijwayelekile zokuthengisa ezidinga ukuphuma okuzinzile kwamanje kanye namandla kagesi, uhla lwezisombululo zesistimu olunamandla anembe okulungisa amandla selusunguliwe.Ukugcwaliseka kwalezi zixazululo kuvame ukudinga umklamo wesifunda oyinkimbinkimbi, umnyombo wawo okuwuhlelo oludidiyelwe lwama-IC driver IC.Ngokusetha amasekethe ahlukene okusekela endaweni ezungezile ye-ICs yomshayeli we-LED, izixazululo zingakhelwa izinhlelo zokusebenza ezihlukene ze-LED, kusukela ekuboniseni umakhalekhukhwini okuncane okukhanyisa izishayeli zekhiphedi kuya ekukhanyisweni komgwaqo we-LED wamandla aphezulu kanye nezibonisi ezinkulu ze-LED zangaphandle.
Idizayini kanye nokuhlinzekwa kwezishayeli ze-LED zamandla aphezulu ajwayelekile ngokuvamile kwenziwa izinkampani ezikhethekile.Lezi zinkampani ziwapakisha abe amamojula bese ziwanikeza abakhiqizi bemikhiqizo esetshenziswa ekugcineni ye-LED.Ukubaluleka okuyingqayizivele kwabashayeli be-LED ezinhlelweni ze-LED kanye nohlu olubanzi lwezidingo zomsebenzisi kwenza umshayeli we-LED u-IC, inhliziyo yomshayeli we-LED, into ebalulekile kulo lonke uchungechunge lobuchwepheshe.Umshayeli uyingxenye eyinhloko yokukhanyisa kwe-LED.Ngokukhula kobuchwepheshe be-chip ye-LED, ikhwalithi yemithombo yokukhanya ye-LED isithembeke kangangokuthi ezimweni eziningi ukwehluleka kwezibani ze-LED kuvela kumshayeli.
Incazelo
I-LP8861-Q1 iyimoto esebenza kahle kakhulu, i-EMI ephansi, kulula ukuyisebenzisa umshayeli we-LED one-integrated boost/SEPIC converter.Inamasinki amanje amane anemba okuphezulu anganikeza ukulawula kokukhanya kwesilinganiso sokufiphala okuphezulu ngesignali yokufaka ye-PWM.
Isiguquli se-boost/SEPIC sinokulawulwa kwamandla kagesi okukhiphayo okuguquguqukayo okusekelwe kumandla kagesi we-LED wamanje we-headroom.Lesi sici sinciphisa ukusetshenziswa kwamandla ngokulungisa i-voltage ibe ileveli eyanele ephansi kuzo zonke izimo.Isiguquli se-boost/SEPIC sisekela i-spectrum esabalele yokushintsha imvamisa kanye nokuvumelanisa kwangaphandle ngephinikhodi ezinikele.Ifrikhwensi yebanga elibanzi elungisekayo ivumela i-LP8861-Q1 ukuthi igweme ukuphazamiseka kwebhendi yomsakazo we-AM.
I-LP8861-Q1 inenketho yokushayela i-p-FET yangaphandle ukuze inqamule ukunikezwa kokufaka ohlelweni uma kwenzeka kuba nephutha futhi kuncishiswe ukusetshenziswa kwamandla amanje nokubekwe eceleni.Idivayisi inganciphisa yamanje ye-LED ngokusekelwe kuzinga lokushisa elilinganiselwe ngenzwa yangaphandle ye-NTC ukuvikela i-LED ekushiseni ngokweqile futhi inwebe ukuphila kwe-LED.
Ibanga lamandla kagesi okufakwayo we-LP8861-Q1 lisuka ku-4.5 V ukuya ku-40 V ukuze lisekele ukuma kwezimoto/ukuqalisa kanye nesimo sokulahla ukulayisha.I-LP8861-Q1 ihlanganisa izici eziningi zokutholwa kwamaphutha nezici zokuvikela.
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