凌特(te)公司(si)（Linear Technology）推(tui)出集成了微(wei)功率(lv)比較器(qi)的(de)緊湊型獨立線性單節鋰離子電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)器(qi) LTC4062。它具有保(bao)(bao)證(zheng)充(chong)(chong)電(dian)(dian)(dian)安全性的(de)多(duo)種先進功能、更高的(de)充(chong)(chong)電(dian)(dian)(dian)終止靈活性、更詳(xiang)細的(de)狀(zhuang)態報告和更長的(de)電(dian)(dian)(dian)池壽(shou)命等特(te)性。在(zai)安全性方面，LTC4062 具有可調節的(de)充(chong)(chong)電(dian)(dian)(dian)終止計時(shi)(shi)器(qi)和防止電(dian)(dian)(dian)池過(guo)充(chong)(chong)電(dian)(dian)(dian)的(de)精確浮動電(dian)(dian)(dian)壓。為消除過(guo)熱(re)風險(xian)的(de)同時(shi)(shi)以(yi)最(zui)高速度充(chong)(chong)電(dian)(dian)(dian)，獲得專利的(de)熱(re)調節電(dian)(dian)(dian)路可保(bao)(bao)持 LTC4062 的(de)結(jie)(jie)溫處于安全水(shui)平。此外，I/O 引腳(jiao)可在(zai)絹(juan)流充(chong)(chong)電(dian)(dian)(dian)、正常充(chong)(chong)電(dian)(dian)(dian)和充(chong)(chong)電(dian)(dian)(dian)結(jie)(jie)束模式時(shi)(shi)報告充(chong)(chong)電(dian)(dian)(dian)狀(zhuang)態。

　　LTC4062 集成了精確(que)的微功(gong)率比較器(qi)。這是(shi)一個非專用(yong)比較器(qi)并具有通用(yong)輸(shu)(shu)入(ru)和開漏輸(shu)(shu)出，能夠用(yong)于低電池電量檢測或精確(que)輸(shu)(shu)入(ru)電壓檢測等方(fang)面。

LTC4062 通過其(qi) Smart StartTM 功能(neng)去(qu)除了不必(bi)要的(de)(de)再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期，從(cong)而(er)延長(chang)了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)壽(shou)命。因為(wei)(wei)頻繁的(de)(de)再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)會降低(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)容量并縮短電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)壽(shou)命，所以當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源第(di)一次加到該充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)上時(shi)(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓高于(yu) 4.1V，那 Smart Start 功能(neng)就(jiu)會阻(zu)止新的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期啟(qi)動(dong)。該集(ji)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)還具有一些充(chong)(chong)(chong)電(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)流(liu)和充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間、外部數字控制或(huo)(huo)自動(dong) C/10。LTC4062 采(cai)用(yong)(yong) 3mm x 3mm DFN 封(feng)裝(zhuang)，非常適合于(yu)從(cong)墻上適配(pei)器(qi)或(huo)(huo) USB 對 MP3 播放器(qi)、數碼相機、PDA 和蜂(feng)窩(wo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。　　LTC4062 能(neng)以 ±0.35% 的(de)(de)準確(que)度(du)將鋰離(li)子(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)至 4.2V 浮動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。該器(qi)件(jian)無(wu)需外部檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)、MOSFET 或(huo)(huo)隔離(li)二級管，極(ji)大地(di)簡化了設計。此外，LTC4062 具有軟啟(qi)動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，以最(zui)大限度(du)地(di)減小開(kai)始(shi)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)的(de)(de)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。就(jiu)通過 USB 的(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而(er)言(yan)，USB 控制器(qi)的(de)(de)邏輯引腳可以按照低(di)功率(lv)或(huo)(huo)高功率(lv)選擇充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，從(cong)而(er)消除對外部分立組件(jian)的(de)(de)依賴。在充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期的(de)(de)任一時(shi)(shi)刻，LTC4062 都能(neng)關(guan)斷，從(cong)而(er)把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)限制在低(di)于(yu) 2uA。　　LTC4062 采(cai)用(yong)(yong) 10 引線 3mm x 3mm DFN 封(feng)裝(zhuang)。以 1,000 片為(wei)(wei)單位(wei)批量購(gou)買，每片起價為(wei)(wei) 1.95 美元。　　性(xing)能(neng)概要：LTC4062　　? 充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)可編程至 1A 的(de)(de)獨立充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)

　　? 直接用 USB 端口對(dui)單節鋰離子電(dian)池充電(dian)

　　? 高(gao)浮動電(dian)壓(ya)準確度：±0.35%

　　? 用于電池電量監視或 AC 存(cun)在檢測的微功率比較器

　　? 熱調節最(zui)大限度地提高充電速(su)度，無過熱風(feng)險

　　? 可編程充(chong)電電流檢測/終止

　　? 可(ke)編程(cheng)充(chong)電終止計(ji)時器

　　? SmartStart 充電算法延(yan)長電池壽命

　　? 智能脈沖故障指示功能

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