PMIC-LED Driver Chip Silk Screen LP8861QPWPRQ1 IC Yakabatanidzwa dunhu.
Iyo LP8861-Q1 ine sarudzo yekutyaira yekunze p FET kuti ibvise iyo yekuisa kubva kune sisitimu kana paine chikanganiso uye kuderedza inrush ikozvino uye yekumira kushandiswa kwesimba.Chigadzirwa chacho chinogona kuderedza
LED ikozvino yakavakirwa pane tembiricha yakayerwa neyekunze NTC sensor kuchengetedza LED kubva pakupisa uye kuwedzera LED hupenyu.
Iyo yekupinza voltage renji yeLP8861-Q1 inobva ku4.5 V kusvika 40 V kutsigira mota yekumira/kutanga uye kuremedza kurasira mamiriro.Iyo LP8861-Q1 inosanganisa yakakura yekuona kukanganisa uye kuchengetedza maficha.
Product Attributes
| TYPE | DESCRIPTION |
| Category | Integrated Circuits (ICs) PMIC - Vatyairi ve LED |
| Mfr | Texas Instruments |
| Series | Motokari, AEC-Q100 |
| Package | Tepi & Reel (TR) Cheka Tape (CT) Digi-Reel® |
| Chikamu Status | Active |
| Type | DC DC Regulator |
| Topology | SEPIC, Nhanho-Kumusoro (Kusimudzira) |
| Internal Switch (s) | Ehe |
| Nhamba Yezvinobuda | 4 |
| Voltage - Supply (Mini) | 4.5V |
| Voltage - Supply (Max) | 40V |
| Voltage - Kubuda | 45V |
| Yazvino - Output / Channel | 100mA |
| Frequency | 300kHz ~ 2.2MHz |
| Dimming | PWM |
| Applications | Motokari, Backlight |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Nyaya | 20-PowerTSSOP (0.173", 4.40mm Upamhi) |
| Supplier Device Package | 20-HTSSOP |
| Base Product Number | LP8861 |
Mutyairi we LED
Chii chinonzi LED Driver?
Mutyairi we LED isimba-yakagadziridzwa magetsi mudziyo unotyaira kushanda kwakajairika kwechiedza che LED kana LED module musangano.Nekuda kwemaitiro ekuitisa kweiyo LED PN junction, inokwanisa kuenderana nevoltage uye kusiyanisa ikozvino kwesimba rakatetepa, kutsauka kudiki kunogona kusakwanisa kuvheneka LED kana kushanda kwechiedza kwakadzikiswa zvakanyanya, kana kupfupisa hupenyu. chechips kana kutopiswa.Ikozvino maindasitiri emagetsi emagetsi uye akajairika mabhatiri emagetsi haakodzere kunanga kupihwa kune maLEDs, uye mutyairi weLED ndicho chikamu chemagetsi chinogona kutyaira iyo LED kuti ishande pane yakanyanya voltage kana ikozvino.
Applications
Zvishandiso zveVatyairi ve LED.
Sezvo ma LED achishandiswa munharaunda yese yezvigadzirwa zvemagetsi, nekusiyana kusingatarisike mukupenya kwakajeka, ruvara rwechiedza, uye pa / off control, madhiraivha e LED ave angangoita imwe-kune-imwe servo zvishandiso, zvichigadzira mhuri dzakasiyana dzemidziyo.Iyo yakapfava LED mutyairi (kana iwe uchigona kuidana iyo) ingangove imwe kana akati wandei akateedzana-akaenzana resistive zvikamu mudunhu rinopatsanura yazvino uye voltage, uye haisi yekumira-yega chigadzirwa zvachose.Kuti uwane mamwe maapplication akajairika ekutengesa anoda kugadzikana anogara aripo uye voltage kubuda, huwandu hwemhinduro dzehurongwa hune chaiwo masimba ekugadzirisa masimba hwakagadzirwa.Kuzadzikiswa kwezvigadziriso izvi kazhinji kunoda yakanyanya kuoma dhizaini dhizaini, iyo musimboti iyo yakasanganiswa application yeLED driver ICs.Nekumisikidza masekete akasiyana ekutsigira padivi peiyo LED mutyairi ICs, mhinduro dzinogona kuvakwa kune dzakasiyana ma LED maapplication, kubva kudiki mbozha mbozha kuratidza backlighting uye keypad mwenje madhiraivha kune yakakwirira-simba LED mugwagwa mwenje uye yakakura yekunze maratidziro e LED.
Dhizaini uye kugovera kweakawanda generic epamusoro-simba madhiraivha e LED anowanzo kuitwa nemakambani anehunyanzvi.Makambani aya anoaisa mumamodule obva aapa kune vanogadzira zvigadzirwa zvemagetsi ekupedzisira eLED.Kukosha kwakasiyana kwevatyairi ve LED mukushandisa kwe LED uye kuwanda kwezvinodiwa nemushandisi kunoita kuti mutyairi we LED IC, moyo wemutyairi we LED, chinhu chakakosha mune yese tekinoroji cheni.Mutyairi ndiye musimboti wechikamu chemwenje we LED.Nekukura kwe LED chip tekinoroji, mhando yemwenje ye LED masosi yakave yakavimbika zvekuti kazhinji kutadza kwe LED luminaires kunobva kumutyairi.
Tsanangudzo
Iyo LP8861-Q1 imotokari yakakwira-inoshanda, yakaderera-EMI, iri nyore kushandisa LED mutyairi ane yakabatanidzwa kuwedzera/SEPIC inoshandura.Iyo ine ina yakakwira-chaiyo ikozvino sinks iyo inogona kupa yakakwira dimming ratio kupenya kutonga nePWM yekupinza chiratidzo.
Iyo inosimudzira/SEPIC inoshandura ine adaptive inobuda voltage control yakavakirwa pane iyo LED yazvino sink headroom voltages.Iyi ficha inoderedza mashandisirwo emagetsi nekugadzirisa voltage kusvika yakadzikira yakaringana nhanho mumamiriro ese.Iyo inosimudzira/SEPIC inoshandura inotsigira kupararira kwekuchinja frequency uye yekunze kuwiriranisa nepini yakatsaurirwa.Iyo yakakura-renji inogadziriswa frequency inobvumira iyo LP8861-Q1 kudzivirira kukanganisa kwe AM radio bhendi.
Iyo LP8861-Q1 ine sarudzo yekutyaira yekunze p-FET kuti ibvise iyo yekuisa kubva kune sisitimu kana paine chikanganiso uye kuderedza inrush ikozvino uye yekumira kushandiswa kwesimba.Chishandiso chinogona kuderedza LED ikozvino zvichienderana nekushisa kuyerwa nekunze NTC sensor kuchengetedza LED kubva pakupisa uye kuwedzera LED hupenyu.
Iyo yekupinza voltage renji yeLP8861-Q1 inobva ku4.5 V kusvika 40 V kutsigira mota yekumira/kutanga uye kuremedza kurasira mamiriro.Iyo LP8861-Q1 inosanganisa yakakura yekuona kukanganisa uye kuchengetedza maficha.
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