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(an)全性、充電速度和尺寸等(deng)特(te)性。

　　MAX8814的(de)(de)高度集成特性(xing)極大地簡化了(le)方案的(de)(de)設(she)計實施，同時(shi)節省了(le)電(dian)(dian)(dian)(dian)(dian)路板空(kong)間和BOM成本。器(qi)件無需(xu)大容量的(de)(de)外部FET、反向(xiang)阻斷(duan)二極管(guan)、檢流電(dian)(dian)(dian)(dian)(dian)阻以(yi)及溫度調(diao)節電(dian)(dian)(dian)(dian)(dian)路。采用內部CCCV電(dian)(dian)(dian)(dian)(dian)路，IC可以(yi)智能地控制充(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)程：從最初(chu)的(de)(de)預(yu)充(chong)階(jie)段、經過(guo)(guo)恒流快速充(chong)電(dian)(dian)(dian)(dian)(dian)、直至最終的(de)(de)恒壓充(chong)電(dian)(dian)(dian)(dian)(dian)過(guo)(guo)程。MAX8814可以(yi)通過(guo)(guo)檢流電(dian)(dian)(dian)(dian)(dian)阻來調(diao)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(xing)。此外，器(qi)件具有一個(ge)自啟動電(dian)(dian)(dian)(dian)(dian)路，可以(yi)監測(ce)系統(tong)的(de)(de)啟動信號(hao)和輸入電(dian)(dian)(dian)(dian)(dian)源的(de)(de)狀(zhuang)態，并產生(sheng)用于啟動系統(tong)工作(zuo)的(de)(de)使能信號(hao)。

　　MAX8814提供小(xiao)型(xing)、2mm x 2mm、8引腳(jiao)TDFN封(feng)裝(zhuang)，工(gong)作(zuo)在-40°C至+85°C擴展(zhan)級溫(wen)度范圍(wei)。芯片起(qi)價(jia)為$1.15 (2500片起(qi)，美國離岸(an)價(jia))。現(xian)備有評估板可加速設計進程(cheng)。