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整合了電流檢測(ce)電路、互補(bu)式金屬氧化物半導體場(chang)效(xiao)電晶體(MOSFET)傳(chuan)輸元(yuan)件及(ji)熱調節電路，并省去(qu)外部反(fan)向(xiang)隔離蕭(xiao)特(te)基(Schottky)二極體，為(wei)手持設備提供最(zui)簡單、尺寸最(zui)小的充電方案。

        MAX8844Z/MAX8844Y經由外部電(dian)(dian)阻(zu)提(ti)供可調節的(de)(de)快速充電(dian)(dian)電(dian)(dian)流(SETI)和結束(shu)充電(dian)(dian)電(dian)(dian)流上(shang)限(MIN)，達到(dao)最大的(de)(de)靈活度。IC具有啟動(dong)輔助電(dian)(dian)路，可分辨(bian)輸(shu)入(ru)源和電(dian)(dian)池的(de)(de)連接(jie)，并為系統(tong)啟動(dong)提(ti)供致能訊號(ABO)。同(tong)時，該款IC可在通用序列匯匯流排(USB)或輸(shu)入(ru)源之間自動(dong)選擇(ze)。如(ru)果兩個輸(shu)入(ru)源同(tong)時連接(jie)，則IN具有更高的(de)(de)優先選擇(ze)。由于IN可提(ti)供更高電(dian)(dian)流，所以選擇(ze)IN以確保具有最短(duan)的(de)(de)充電(dian)(dian)時間。

　　該(gai)款IC可控制(zhi)從預備充(chong)(chong)(chong)(chong)(chong)電(dian)狀態到恒流快速充(chong)(chong)(chong)(chong)(chong)電(dian)、結束充(chong)(chong)(chong)(chong)(chong)電(dian)及充(chong)(chong)(chong)(chong)(chong)飽(bao)電(dian)量的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)指示過程。獨特的(de)熱調節電(dian)路限制(zhi)了快速充(chong)(chong)(chong)(chong)(chong)電(dian)時或IC在高溫(wen)環境(jing)下充(chong)(chong)(chong)(chong)(chong)電(dian)時的(de)溫(wen)度，可在不(bu)損(sun)壞(huai)IC的(de)前(qian)提(ti)下提(ti)供最大的(de)充(chong)(chong)(chong)(chong)(chong)電(dian)電(dian)流。