專為移(yi)動消費電(dian)子設(she)備提供電(dian)源管(guan)理半導體器(qi)件，日(ri)前宣布(bu)推出一個覆蓋全面的(de)產品線――USB/AC電(dian)池充(chong)電(dian)器(qi)芯(xin)片(pian)，用(yong)于(yu)以單(dan)塊4.2V(4.375V)鋰離子/聚合物電(dian)池供電(dian)的(de)便攜式系統(tong)。這些新型器(qi)件在高度緊湊的(de)空間內融合了(le)多(duo)種(zhong)性能，而僅(jin)需一個外部組件，在小至2.0×2.1mm的(de)封裝內可提供完整的(de)USB/AC充(chong)電(dian)功能。 

    內置(zhi)數字熱調節 

    該新產品系列中的AAT3683芯片的單輸入USB/AC充電器支持(chi)高至(zhi)1A的可(ke)調充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，其運行的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)入(ru)范圍是4.0V至(zhi)6.5V，并(bing)且內(nei)置了一個充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)裝置、反向阻斷二極管及電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)感應電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，可(ke)用(yong)于(yu)對(dui)4.2V(4.375V)鋰離子/聚合物電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)進(jin)行調節。這(zhe)款(kuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)芯片(pian)采用(yong)了由AnalogicTech開(kai)發并(bing)擁有(you)專利的數(shu)字熱調節電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，它可(ke)以在(zai)晶圓內(nei)部溫度(du)超過(guo)預設溫度(du)時自動降低充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，對(dui)器(qi)件進(jin)行過(guo)熱保護(hu)。這(zhe)一功(gong)能(neng)可(ke)在(zai)一組給定的輸(shu)入(ru)-輸(shu)出、功(gong)耗及環境(jing)溫度(du)條件下，有(you)助于(yu)最(zui)大(da)限度(du)地保持(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，并(bing)在(zai)最(zui)短(duan)的時間內(nei)完成充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。此外(wai)，AAT3683還(huan)添加了一個內(nei)置充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)計(ji)時器(qi)：當損壞的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在(zai)預定時長內(nei)無(wu)法接(jie)收電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷時，充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)計(ji)時器(qi)將自動關閉充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功(gong)能(neng)。 

    AAT3684是(shi)一款單輸入USB/AC適配器(qi)充(chong)電器(qi)，它在15mA至(zhi)500mA的充(chong)電電流(liu)范圍內(nei)可調。作(zuo)為一項標準(zhun)功(gong)能，該(gai)器(qi)件(jian)可為電池預處理(li)提供自動涓(juan)流(liu)充(chong)電。另外(wai)，AAT3684-1版本不帶有涓(juan)流(liu)充(chong)電功(gong)能，可供使(shi)用者選擇。 

    AAT3681A是AnalogicTech在2006年4月推出的AAT3681芯(xin)片的衍生(sheng)產品，專為需(xu)要從USB或AC電(dian)源產生(sheng)500mA的空(kong)間限制(zhi)型便攜式(shi)應(ying)用(yong)而設(she)計，采(cai)用(yong)高(gao)度緊湊的2.0×2.1mm SC70JW封(feng)裝。這款電(dian)池充(chong)電(dian)器芯(xin)片與其前(qian)身的不同之處在于(yu)，它還具有多種選擇(ze)，如涓(juan)流充(chong)電(dian)功能、高(gao)低(di)電(dian)平有效使能，以及充(chong)電(dian)終(zhong)止閾門電(dian)流設(she)置等。 

    每一款新充電器芯片皆具有過(guo)壓、短路及過(guo)熱保護。AAT3683還添加了過(guo)流保護功能。 

    價格與供貨(huo) 

    這三款芯片的額定工(gong)作溫度范圍是-40至+85℃。AAT3681A采用(yong)無(wu)鉛(qian)、8引(yin)腳、2×2.1mm SC70JW封(feng)裝(zhuang)，現已供貨，訂貨量為1,000片時每片單價(jia)為0.81美元(yuan)。 

    AAT3683采用無鉛、10引腳(jiao)2.2×2.2mm STDFN和16引腳(jiao)QFN-33封(feng)裝(zhuang)(zhuang)，現(xian)已供貨(huo)，訂貨(huo)量為(wei)1,000片(pian)(pian)時每(mei)片(pian)(pian)單價0.98美元。AAT3684采用10引腳(jiao)2.2×2.2mm STDFN封(feng)裝(zhuang)(zhuang)，現(xian)已供貨(huo)，訂貨(huo)量為(wei)1,000片(pian)(pian)時每(mei)片(pian)(pian)單價0.92美元。