凌特(te)公司（Linear Technology）推出集成了微功(gong)率比較器的(de)(de)(de)(de)(de)緊湊型獨立線(xian)性(xing)(xing)單節鋰離子(zi)電(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)器 LTC4062。它具(ju)有保證充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)安全性(xing)(xing)的(de)(de)(de)(de)(de)多種先進功(gong)能、更高的(de)(de)(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)終止靈活(huo)性(xing)(xing)、更詳細的(de)(de)(de)(de)(de)狀態(tai)報(bao)告(gao)和(he)(he)更長的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)池壽(shou)命等特(te)性(xing)(xing)。在(zai)安全性(xing)(xing)方面(mian)，LTC4062 具(ju)有可(ke)調(diao)節的(de)(de)(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)終止計時器和(he)(he)防止電(dian)(dian)(dian)(dian)池過充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)精確(que)浮動(dong)電(dian)(dian)(dian)(dian)壓。為消除過熱風險的(de)(de)(de)(de)(de)同時以最高速(su)度(du)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，獲得專利(li)的(de)(de)(de)(de)(de)熱調(diao)節電(dian)(dian)(dian)(dian)路可(ke)保持 LTC4062 的(de)(de)(de)(de)(de)結溫(wen)處于安全水(shui)平。此外(wai)，I/O 引腳可(ke)在(zai)絹流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)、正(zheng)常充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)和(he)(he)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)結束模式時報(bao)告(gao)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)狀態(tai)。

　　LTC4062 集成(cheng)了精確(que)的微功率比較器(qi)(qi)。這(zhe)是一個非專用比較器(qi)(qi)并具有通用輸入和開漏(lou)輸出(chu)，能夠用于低(di)電池電量檢測或精確(que)輸入電壓檢測等方面。

LTC4062 通(tong)過(guo)其 Smart StartTM 功(gong)(gong)能(neng)(neng)(neng)去除(chu)了不必(bi)要(yao)的(de)再充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)，從(cong)而(er)延(yan)長了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命。因為頻繁的(de)再充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)會降低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)容量并縮短電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命，所以當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源第一(yi)次(ci)加(jia)到該充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器上(shang)(shang)時(shi)(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓高(gao)于 4.1V，那 Smart Start 功(gong)(gong)能(neng)(neng)(neng)就會阻止新(xin)的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)啟動(dong)。該集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)還具(ju)有一(yi)些充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)終止方式，這包括用(yong)(yong)戶可調電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流和(he)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間、外(wai)(wai)部(bu)數字控制或自動(dong) C/10。LTC4062 采用(yong)(yong) 3mm x 3mm DFN 封裝，非常適合于從(cong)墻上(shang)(shang)適配器或 USB 對(dui) MP3 播放器、數碼相機(ji)、PDA 和(he)蜂窩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)中(zhong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。　　LTC4062 能(neng)(neng)(neng)以 ±0.35% 的(de)準確度將鋰離(li)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)至 4.2V 浮動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。該器件無(wu)需外(wai)(wai)部(bu)檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、MOSFET 或隔離(li)二級管，極大地簡(jian)化了設計。此外(wai)(wai)，LTC4062 具(ju)有軟(ruan)啟動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，以最大限(xian)度地減小開(kai)始(shi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)的(de)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。就通(tong)過(guo) USB 的(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而(er)言，USB 控制器的(de)邏輯引腳可以按照低功(gong)(gong)率(lv)或高(gao)功(gong)(gong)率(lv)選擇充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，從(cong)而(er)消除(chu)對(dui)外(wai)(wai)部(bu)分(fen)立(li)組件的(de)依賴(lai)。在(zai)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)的(de)任(ren)一(yi)時(shi)(shi)刻(ke)，LTC4062 都能(neng)(neng)(neng)關斷(duan)，從(cong)而(er)把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流限(xian)制在(zai)低于 2uA。　　LTC4062 采用(yong)(yong) 10 引線 3mm x 3mm DFN 封裝。以 1,000 片為單位批量購買(mai)，每片起價為 1.95 美元。　　性(xing)能(neng)(neng)(neng)概要(yao)：LTC4062　　? 充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流可編(bian)程至 1A 的(de)獨立(li)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器

　　? 直接用 USB 端口對單(dan)節鋰離子電(dian)(dian)池充電(dian)(dian)

　　? 高浮動電(dian)壓準確度：±0.35%

　　? 用于電池電量監視或 AC 存在檢測的微功率(lv)比較器

　　? 熱調節最大限度地(di)提高充電速度，無過熱風險

　　? 可編程充電電流(liu)檢(jian)測/終止

　　? 可編程充(chong)電終止計時器

　　? SmartStart 充電算法(fa)延長(chang)電池壽(shou)命

　　? 智能脈沖故障指示功能

　　? 扁平(ping) 10 引線 DFN 封裝(zhuang)（3mm x 3mm x 0.75mm）