Maxim日前發表的MAX8844Z/MAX8844Y為智慧型獨立式恒流、恒壓(CCCV)并具備溫度調節功能的雙通道輸入線性充電器，專為單顆鋰離子(Li+)電池充電器設計。MAX8844Z/MAX8844Y整(zheng)合了(le)電流檢(jian)測電路、互補(bu)式(shi)金屬氧化物半導體場效電晶體(MOSFET)傳輸元件及熱調節電路，并省去外(wai)部反(fan)向(xiang)隔離蕭特基(ji)(Schottky)二極體，為手持設備提供最(zui)簡單、尺寸最(zui)小的充電方案。

        MAX8844Z/MAX8844Y經由(you)外部電(dian)阻提(ti)(ti)供(gong)(gong)可(ke)調(diao)節的快(kuai)速充(chong)(chong)電(dian)電(dian)流(liu)(liu)(liu)(SETI)和(he)結束充(chong)(chong)電(dian)電(dian)流(liu)(liu)(liu)上限(MIN)，達到最(zui)大(da)的靈活度。IC具有(you)啟動輔(fu)助電(dian)路，可(ke)分辨(bian)輸(shu)入源(yuan)(yuan)和(he)電(dian)池的連接，并為系統啟動提(ti)(ti)供(gong)(gong)致(zhi)能(neng)訊號(ABO)。同時，該款IC可(ke)在通(tong)用序列匯(hui)匯(hui)流(liu)(liu)(liu)排(USB)或(huo)輸(shu)入源(yuan)(yuan)之(zhi)間自(zi)動選(xuan)擇。如果兩個輸(shu)入源(yuan)(yuan)同時連接，則IN具有(you)更高的優(you)先(xian)選(xuan)擇。由(you)于(yu)IN可(ke)提(ti)(ti)供(gong)(gong)更高電(dian)流(liu)(liu)(liu)，所以選(xuan)擇IN以確保具有(you)最(zui)短的充(chong)(chong)電(dian)時間。

　　該款IC可控(kong)制(zhi)從(cong)預備充(chong)電(dian)(dian)(dian)狀態到恒(heng)流(liu)快(kuai)速充(chong)電(dian)(dian)(dian)、結(jie)束充(chong)電(dian)(dian)(dian)及充(chong)飽電(dian)(dian)(dian)量的(de)充(chong)電(dian)(dian)(dian)指示過程。獨特的(de)熱調節電(dian)(dian)(dian)路限制(zhi)了快(kuai)速充(chong)電(dian)(dian)(dian)時或IC在(zai)高溫(wen)環境下(xia)充(chong)電(dian)(dian)(dian)時的(de)溫(wen)度，可在(zai)不損壞(huai)IC的(de)前提下(xia)提供最大的(de)充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)。