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、充電(dian)速(su)度和尺(chi)寸等特性。

　　MAX8814的(de)(de)高度(du)集成特性極大(da)地簡化了方案的(de)(de)設計實施，同時節(jie)省了電(dian)(dian)(dian)(dian)(dian)路板空(kong)間(jian)和BOM成本。器件(jian)無需大(da)容量的(de)(de)外部(bu)FET、反向阻斷二極管、檢(jian)流(liu)電(dian)(dian)(dian)(dian)(dian)阻以(yi)及溫度(du)調節(jie)電(dian)(dian)(dian)(dian)(dian)路。采用內部(bu)CCCV電(dian)(dian)(dian)(dian)(dian)路，IC可(ke)以(yi)智能(neng)地控制(zhi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程：從最(zui)初的(de)(de)預充(chong)(chong)(chong)階段、經過(guo)恒流(liu)快(kuai)速充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)、直(zhi)至最(zui)終的(de)(de)恒壓充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)程。MAX8814可(ke)以(yi)通過(guo)檢(jian)流(liu)電(dian)(dian)(dian)(dian)(dian)阻來調節(jie)快(kuai)速充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)，以(yi)提高靈活性。此外，器件(jian)具有一個自啟動電(dian)(dian)(dian)(dian)(dian)路，可(ke)以(yi)監(jian)測系統的(de)(de)啟動信號和輸入電(dian)(dian)(dian)(dian)(dian)源的(de)(de)狀態，并(bing)產生用于(yu)啟動系統工作的(de)(de)使(shi)能(neng)信號。

　　MAX8814提供小型、2mm x 2mm、8引(yin)腳TDFN封裝，工(gong)作(zuo)在-40°C至(zhi)+85°C擴展(zhan)級(ji)溫度范圍。芯(xin)片(pian)起價為$1.15 (2500片(pian)起，美國離岸價)。現備有評估板可加(jia)速設計進(jin)程。