專(zhuan)為(wei)移動(dong)消費電(dian)(dian)(dian)子(zi)設(she)備提(ti)供電(dian)(dian)(dian)源管理半(ban)導體器(qi)件(jian)，日前宣(xuan)布推出一個(ge)覆蓋全面的(de)(de)產品線(xian)――USB/AC電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)器(qi)芯片，用于以(yi)單(dan)塊4.2V(4.375V)鋰離(li)子(zi)/聚合物電(dian)(dian)(dian)池供電(dian)(dian)(dian)的(de)(de)便攜式(shi)系統(tong)。這(zhe)些新(xin)型器(qi)件(jian)在(zai)高(gao)度緊湊的(de)(de)空間內融合了多種性能(neng)，而僅需一個(ge)外部組件(jian)，在(zai)小至2.0×2.1mm的(de)(de)封裝內可提(ti)供完整的(de)(de)USB/AC充(chong)(chong)電(dian)(dian)(dian)功能(neng)。 

    內置數字熱調節(jie) 

    該新產品系列中的AAT3683芯片的單輸入USB/AC充電器支持高至(zhi)1A的(de)(de)(de)可(ke)(ke)調充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)，其運行的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓輸(shu)入范圍(wei)是4.0V至(zhi)6.5V，并且內(nei)(nei)(nei)置(zhi)了(le)一(yi)個充(chong)電(dian)(dian)(dian)(dian)(dian)裝置(zhi)、反向阻斷二極(ji)管及電(dian)(dian)(dian)(dian)(dian)流(liu)感應電(dian)(dian)(dian)(dian)(dian)路，可(ke)(ke)用(yong)于(yu)(yu)對4.2V(4.375V)鋰離子(zi)/聚合物電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的(de)(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)(dian)流(liu)進行調節。這(zhe)款(kuan)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)器芯片采用(yong)了(le)由AnalogicTech開發并擁(yong)有專(zhuan)利(li)的(de)(de)(de)數字熱(re)調節電(dian)(dian)(dian)(dian)(dian)路，它(ta)可(ke)(ke)以在晶圓內(nei)(nei)(nei)部溫(wen)度超(chao)過(guo)(guo)預設溫(wen)度時(shi)自動(dong)降低充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)，對器件進行過(guo)(guo)熱(re)保護。這(zhe)一(yi)功能可(ke)(ke)在一(yi)組給定的(de)(de)(de)輸(shu)入-輸(shu)出、功耗(hao)及環境(jing)溫(wen)度條件下，有助于(yu)(yu)最(zui)大限度地保持電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)，并在最(zui)短的(de)(de)(de)時(shi)間(jian)內(nei)(nei)(nei)完成充(chong)電(dian)(dian)(dian)(dian)(dian)。此(ci)外，AAT3683還添加了(le)一(yi)個內(nei)(nei)(nei)置(zhi)充(chong)電(dian)(dian)(dian)(dian)(dian)計時(shi)器：當損壞(huai)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)池(chi)(chi)在預定時(shi)長內(nei)(nei)(nei)無法接收(shou)電(dian)(dian)(dian)(dian)(dian)荷(he)時(shi)，充(chong)電(dian)(dian)(dian)(dian)(dian)計時(shi)器將自動(dong)關(guan)閉充(chong)電(dian)(dian)(dian)(dian)(dian)功能。 

    AAT3684是一款單輸入USB/AC適配器充(chong)電(dian)器，它(ta)在15mA至500mA的充(chong)電(dian)電(dian)流(liu)范圍(wei)內可(ke)(ke)調。作(zuo)為一項(xiang)標準功能，該器件(jian)可(ke)(ke)為電(dian)池預處理提供(gong)自(zi)動涓流(liu)充(chong)電(dian)。另外，AAT3684-1版本不帶有涓流(liu)充(chong)電(dian)功能，可(ke)(ke)供(gong)使用(yong)者選擇。 

    AAT3681A是AnalogicTech在(zai)2006年4月推出的(de)AAT3681芯片的(de)衍生(sheng)產品，專為需(xu)要(yao)從USB或(huo)AC電源(yuan)產生(sheng)500mA的(de)空間限制型便攜式應用而設計(ji)，采用高度緊湊的(de)2.0×2.1mm SC70JW封(feng)裝。這(zhe)款電池充(chong)電器芯片與其前身的(de)不同之(zhi)處在(zai)于(yu)，它(ta)還(huan)具有多種選擇，如涓流充(chong)電功(gong)能、高低(di)電平有效使能，以及(ji)充(chong)電終止閾門電流設置等。 

    每一款新充電器芯片皆具有過壓、短路及過熱(re)保護(hu)。AAT3683還添加了過流保護(hu)功能。 

    價格與供貨 

    這三(san)款芯片的額(e)定工(gong)作溫度范圍(wei)是-40至+85℃。AAT3681A采用無鉛、8引(yin)腳、2×2.1mm SC70JW封裝，現已供(gong)貨，訂(ding)貨量為1,000片時每片單價為0.81美(mei)元。 

    AAT3683采用無鉛、10引(yin)腳(jiao)2.2×2.2mm STDFN和16引(yin)腳(jiao)QFN-33封裝，現已供貨，訂(ding)貨量為1,000片時每(mei)片單價(jia)0.98美(mei)元。AAT3684采用10引(yin)腳(jiao)2.2×2.2mm STDFN封裝，現已供貨，訂(ding)貨量為1,000片時每(mei)片單價(jia)0.92美(mei)元。