專(zhuan)為移動消(xiao)費電(dian)(dian)(dian)子設(she)備(bei)提供(gong)(gong)電(dian)(dian)(dian)源管理(li)半導體器(qi)(qi)件，日前宣布推(tui)出(chu)一個覆(fu)蓋全(quan)面的(de)產品(pin)線――USB/AC電(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)器(qi)(qi)芯片，用于(yu)以單(dan)塊(kuai)4.2V(4.375V)鋰(li)離子/聚合物電(dian)(dian)(dian)池(chi)供(gong)(gong)電(dian)(dian)(dian)的(de)便攜(xie)式系統。這些新(xin)型器(qi)(qi)件在高度(du)緊(jin)湊(cou)的(de)空間內(nei)融合了多種性能，而僅需一個外部(bu)組件，在小至2.0×2.1mm的(de)封裝內(nei)可(ke)提供(gong)(gong)完整的(de)USB/AC充電(dian)(dian)(dian)功(gong)能。 

    內(nei)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(zhi)持高至1A的(de)可調(diao)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，其(qi)運行的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓輸入范圍是4.0V至6.5V，并(bing)且內(nei)置了一(yi)(yi)個充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)裝置、反向阻斷二極(ji)管及電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)感應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，可用于對4.2V(4.375V)鋰(li)離子/聚合物電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)進(jin)行調(diao)節。這款電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器芯片采用了由AnalogicTech開(kai)發并(bing)擁有(you)專(zhuan)利的(de)數字熱調(diao)節電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，它可以在(zai)(zai)晶圓(yuan)內(nei)部溫度(du)超(chao)過預(yu)設溫度(du)時(shi)自動降低充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，對器件進(jin)行過熱保(bao)(bao)護。這一(yi)(yi)功能可在(zai)(zai)一(yi)(yi)組給定的(de)輸入-輸出(chu)、功耗及環境溫度(du)條件下，有(you)助于最大限(xian)度(du)地保(bao)(bao)持電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，并(bing)在(zai)(zai)最短的(de)時(shi)間內(nei)完成充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。此外，AAT3683還添加了一(yi)(yi)個內(nei)置充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)計時(shi)器：當(dang)損壞的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池在(zai)(zai)預(yu)定時(shi)長內(nei)無法接收電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷時(shi)，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)計時(shi)器將(jiang)自動關閉充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)功能。 

    AAT3684是一(yi)款單輸(shu)入USB/AC適配(pei)器充(chong)(chong)電(dian)器，它在15mA至500mA的充(chong)(chong)電(dian)電(dian)流(liu)范圍內可(ke)調。作為(wei)一(yi)項標準功(gong)能，該器件可(ke)為(wei)電(dian)池預處(chu)理(li)提(ti)供自動涓(juan)流(liu)充(chong)(chong)電(dian)。另外(wai)，AAT3684-1版(ban)本(ben)不(bu)帶有涓(juan)流(liu)充(chong)(chong)電(dian)功(gong)能，可(ke)供使用者選擇(ze)。 

    AAT3681A是AnalogicTech在2006年4月推出的(de)AAT3681芯片的(de)衍生(sheng)產(chan)品，專為需要(yao)從USB或AC電(dian)源產(chan)生(sheng)500mA的(de)空間限制型便攜式應用而設計，采用高度緊(jin)湊(cou)的(de)2.0×2.1mm SC70JW封裝。這款電(dian)池(chi)充(chong)電(dian)器芯片與其前身的(de)不同之處在于，它還具有多種選擇，如涓流(liu)充(chong)電(dian)功能(neng)、高低(di)電(dian)平有效(xiao)使能(neng)，以及充(chong)電(dian)終止閾(yu)門電(dian)流(liu)設置(zhi)等。 

    每一款新充電器芯(xin)片皆具(ju)有過(guo)壓、短(duan)路及過(guo)熱保(bao)護。AAT3683還添加了過(guo)流保(bao)護功(gong)能。 

    價格(ge)與供貨(huo) 

    這(zhe)三(san)款芯片(pian)(pian)(pian)的額定工作(zuo)溫度范圍是-40至+85℃。AAT3681A采用無(wu)鉛、8引腳、2×2.1mm SC70JW封裝，現已供貨，訂貨量為(wei)1,000片(pian)(pian)(pian)時每片(pian)(pian)(pian)單價(jia)為(wei)0.81美元。 

    AAT3683采用(yong)無(wu)鉛、10引腳2.2×2.2mm STDFN和16引腳QFN-33封裝，現已(yi)供貨，訂貨量為1,000片(pian)時每(mei)片(pian)單價0.98美(mei)元(yuan)。AAT3684采用(yong)10引腳2.2×2.2mm STDFN封裝，現已(yi)供貨，訂貨量為1,000片(pian)時每(mei)片(pian)單價0.92美(mei)元(yuan)。