MT9514D是一款高(gao)功率(lv)因數(shu)、非隔離LED驅動(dong)芯(xin)片。它采用(yong)實地(di)降(jiang)壓式開關電(dian)源的架構，工作在準諧振模式，同時使(shi)效率(lv)和抗電(dian)磁干擾的性能都得到(dao)提(ti)升。

MT9514D通(tong)過(guo)內部(bu)(bu)集成的高(gao)壓(ya)供電(dian)(dian)電(dian)(dian)路供電(dian)(dian)，無(wu)需(xu)外部(bu)(bu)VDD電(dian)(dian)容(rong)。通(tong)過(guo)內部(bu)(bu)數字積分器實現(xian)誤(wu)差積分功(gong)能，節省了COMP引腳(jiao)及COMP電(dian)(dian)容(rong)。MT9514D通(tong)過(guo)內部(bu)(bu)集成的THD補(bu)償電(dian)(dian)路，可以滿足更低(di)THD和奇次(ci)諧波(bo)的需(xu)求。

MT9514D內部集成了多重(zhong)的保(bao)(bao)(bao)護(hu)(hu)功能(neng)，比如(ru)輸(shu)(shu)入過(guo)壓保(bao)(bao)(bao)護(hu)(hu)、逐周(zhou)期過(guo)流保(bao)(bao)(bao)護(hu)(hu)、過(guo)溫折返保(bao)(bao)(bao)護(hu)(hu)、輸(shu)(shu)出短路保(bao)(bao)(bao)護(hu)(hu)、輸(shu)(shu)出開路保(bao)(bao)(bao)護(hu)(hu)等等，提高(gao)了可靠性(xing)，并且所有(you)(you)保(bao)(bao)(bao)護(hu)(hu)均(jun)具有(you)(you)自恢復功能(neng)。芯片通過(guo)ROVP腳的外部電(dian)路連(lian)(lian)接（如(ru)開路、接地或(huo)連(lian)(lian)接不同阻值(zhi)的電(dian)阻），來(lai)調(diao)節輸(shu)(shu)出過(guo)壓保(bao)(bao)(bao)護(hu)(hu)功能(neng)。

MT9514D內置反饋電路(lu)和高壓MOSFET，極大地精簡了(le)外圍電路(lu)，節省(sheng)了(le)BOM成本。

• 單(dan)級有源PFC實現了高功率因(yin)數（功率因(yin)數>0.9）

• 內(nei)置(zhi)(zhi)高壓供電(dian)(dian)電(dian)(dian)路，無(wu)需(xu)外置(zhi)(zhi)VDD電(dian)(dian)容及供電(dian)(dian)電(dian)(dian)路內(nei)置(zhi)(zhi)積(ji)分器，無(wu)需(xu)外置(zhi)(zhi)COMP電(dian)(dian)容

• 集成THD補(bu)償(chang)電路(lu)

• 集成奇(qi)次諧波補償電路，抑制高(gao)次諧波失真

• 內置線電壓補償

• 內置驅(qu)動腳去磁檢(jian)測，節省外置反(fan)饋電(dian)阻

• 高(gao)精(jing)度的LED輸出電流

• 優(you)異的線性調(diao)(diao)整(zheng)率和負載調(diao)(diao)整(zheng)率

• 臨界導通模式運行

• 集成輸(shu)(shu)入過壓保護，輸(shu)(shu)入電壓高(gao)于375Vac關斷，320Vac恢復。抗浪涌(yong)能力強(qiang)，更加安全可(ke)靠

• 通過ROVP腳，設置不(bu)同(tong)輸出過壓保護閾值(zhi)

• 多種保護和自動恢復功能

• 具有軟啟動功能

• DIP7封裝