Maxim推出MAX8814首款額定28V的單輸入充電器，用于單節鋰離子(Li+)電池。器件僅需4mm2的電路板空間，通過集成MAXIM專有的溫度及恒流恒壓(CCCV)調節電路，可以避免快速充電過程中出現過熱，簡化了硬件設計。MAX8814具有過壓保護電路，可以承受高達28V的輸入瞬態變化，性能可靠。高可靠性和集成度使該小型充電器成為蜂窩電話、智能手機、USB應用、藍牙器件以及其它手持設備的理想選擇，這些應用中主要關心充電器的安全(quan)性(xing)、充電(dian)速度和尺寸(cun)等特性(xing)。

　　MAX8814的(de)高度(du)集成特性極大(da)地簡化了方(fang)案的(de)設計實施，同時節省了電(dian)(dian)(dian)(dian)(dian)路板空間和(he)BOM成本。器(qi)件(jian)無需大(da)容量的(de)外部FET、反向阻(zu)(zu)斷二極管、檢流電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)以(yi)及(ji)溫度(du)調節電(dian)(dian)(dian)(dian)(dian)路。采用內(nei)部CCCV電(dian)(dian)(dian)(dian)(dian)路，IC可以(yi)智能地控制(zhi)充(chong)電(dian)(dian)(dian)(dian)(dian)過程：從最初的(de)預充(chong)階段、經過恒流快速充(chong)電(dian)(dian)(dian)(dian)(dian)、直(zhi)至(zhi)最終的(de)恒壓充(chong)電(dian)(dian)(dian)(dian)(dian)過程。MAX8814可以(yi)通(tong)過檢流電(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)來調節快速充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流，以(yi)提高靈活性。此外，器(qi)件(jian)具有(you)一個(ge)自啟(qi)動電(dian)(dian)(dian)(dian)(dian)路，可以(yi)監測(ce)系(xi)統(tong)的(de)啟(qi)動信號和(he)輸入電(dian)(dian)(dian)(dian)(dian)源的(de)狀態(tai)，并產(chan)生(sheng)用于(yu)啟(qi)動系(xi)統(tong)工作的(de)使能信號。

　　MAX8814提供小型、2mm x 2mm、8引(yin)腳TDFN封裝，工作在(zai)-40°C至+85°C擴展級溫度(du)范圍。芯片起(qi)價為$1.15 (2500片起(qi)，美國離岸價)。現備有評估板可加(jia)速(su)設計進程。