凌(ling)特(te)公司(si)（Linear Technology）推出集成了(le)微功率比較器的(de)(de)(de)(de)緊湊型獨立線(xian)性單節鋰離子電(dian)(dian)(dian)池充(chong)(chong)(chong)電(dian)(dian)(dian)器 LTC4062。它具有保證充(chong)(chong)(chong)電(dian)(dian)(dian)安全性的(de)(de)(de)(de)多種(zhong)先進功能(neng)、更高的(de)(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)終(zhong)止(zhi)靈(ling)活性、更詳細的(de)(de)(de)(de)狀態報(bao)告(gao)和(he)更長的(de)(de)(de)(de)電(dian)(dian)(dian)池壽命(ming)等特(te)性。在安全性方面，LTC4062 具有可(ke)調(diao)節的(de)(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)(dian)終(zhong)止(zhi)計時(shi)器和(he)防止(zhi)電(dian)(dian)(dian)池過充(chong)(chong)(chong)電(dian)(dian)(dian)的(de)(de)(de)(de)精確浮動電(dian)(dian)(dian)壓。為消除過熱風險的(de)(de)(de)(de)同時(shi)以最高速(su)度充(chong)(chong)(chong)電(dian)(dian)(dian)，獲得專利的(de)(de)(de)(de)熱調(diao)節電(dian)(dian)(dian)路可(ke)保持 LTC4062 的(de)(de)(de)(de)結(jie)溫(wen)處于安全水平。此外，I/O 引腳(jiao)可(ke)在絹流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)、正(zheng)常充(chong)(chong)(chong)電(dian)(dian)(dian)和(he)充(chong)(chong)(chong)電(dian)(dian)(dian)結(jie)束模式時(shi)報(bao)告(gao)充(chong)(chong)(chong)電(dian)(dian)(dian)狀態。

　　LTC4062 集成了(le)精確(que)的微功率比較(jiao)器。這是一個非專用比較(jiao)器并具有通用輸(shu)(shu)入和開漏(lou)輸(shu)(shu)出，能夠用于低電(dian)(dian)池電(dian)(dian)量檢(jian)測(ce)或精確(que)輸(shu)(shu)入電(dian)(dian)壓(ya)檢(jian)測(ce)等(deng)方(fang)面。

LTC4062 通(tong)過(guo)其 Smart StartTM 功(gong)(gong)能(neng)(neng)去(qu)除了不必要(yao)的(de)(de)再充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期，從而延(yan)長了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)壽命(ming)。因為頻繁的(de)(de)再充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)會降(jiang)低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)容量(liang)并縮短電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)壽命(ming)，所以當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源第(di)一(yi)次加到(dao)該充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器上(shang)(shang)時(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓高(gao)于(yu) 4.1V，那(nei) Smart Start 功(gong)(gong)能(neng)(neng)就(jiu)會阻止新(xin)的(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期啟動(dong)。該集成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路還(huan)具有一(yi)些充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)終止方式，這包括用戶(hu)可調電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)和充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)間、外部數(shu)字控制(zhi)或自動(dong) C/10。LTC4062 采用 3mm x 3mm DFN 封(feng)(feng)裝，非常適合于(yu)從墻上(shang)(shang)適配器或 USB 對 MP3 播放(fang)器、數(shu)碼相機、PDA 和蜂窩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。　　LTC4062 能(neng)(neng)以 ±0.35% 的(de)(de)準確度將鋰離(li)子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)至(zhi) 4.2V 浮動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。該器件無需外部檢測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、MOSFET 或隔離(li)二(er)級管，極大(da)地簡化了設計。此外，LTC4062 具有軟啟動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，以最大(da)限度地減小開始充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)的(de)(de)浪(lang)涌(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。就(jiu)通(tong)過(guo) USB 的(de)(de)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而言，USB 控制(zhi)器的(de)(de)邏輯引腳可以按照低功(gong)(gong)率或高(gao)功(gong)(gong)率選(xuan)擇充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，從而消除對外部分立(li)組件的(de)(de)依賴。在充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期的(de)(de)任一(yi)時(shi)刻，LTC4062 都能(neng)(neng)關斷，從而把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)限制(zhi)在低于(yu) 2uA。　　LTC4062 采用 10 引線(xian) 3mm x 3mm DFN 封(feng)(feng)裝。以 1,000 片為單位批量(liang)購買，每片起價為 1.95 美元(yuan)。　　性能(neng)(neng)概(gai)要(yao)：LTC4062　　? 充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)可編程(cheng)至(zhi) 1A 的(de)(de)獨立(li)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器

　　? 直接(jie)用 USB 端口(kou)對(dui)單(dan)節鋰離子(zi)電(dian)池(chi)充電(dian)

　　? 高浮動電(dian)壓準(zhun)確(que)度(du)：±0.35%

　　? 用于電池電量監視或 AC 存在檢測(ce)的微功率(lv)比較(jiao)器

　　? 熱(re)調節最大(da)限度(du)地提高充電速度(du)，無過熱(re)風險

　　? 可(ke)編程充電(dian)電(dian)流檢(jian)測/終止

　　? 可編程(cheng)充(chong)電終(zhong)止計時器

　　? SmartStart 充電算法(fa)延長電池壽命

　　? 智能脈沖(chong)故障指示功能

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