凌特公(gong)司（Linear Technology）推(tui)出(chu)集成了微功率比(bi)較(jiao)器的(de)(de)緊湊型(xing)獨立線性(xing)單(dan)節鋰離子(zi)電(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)器 LTC4062。它具有(you)保證充(chong)電(dian)(dian)(dian)安全(quan)性(xing)的(de)(de)多(duo)種先進功能、更高(gao)的(de)(de)充(chong)電(dian)(dian)(dian)終(zhong)止靈(ling)活性(xing)、更詳(xiang)細的(de)(de)狀態報(bao)(bao)告和更長的(de)(de)電(dian)(dian)(dian)池(chi)(chi)壽命(ming)等特性(xing)。在安全(quan)性(xing)方面，LTC4062 具有(you)可(ke)調節的(de)(de)充(chong)電(dian)(dian)(dian)終(zhong)止計(ji)時(shi)器和防(fang)止電(dian)(dian)(dian)池(chi)(chi)過充(chong)電(dian)(dian)(dian)的(de)(de)精確浮動電(dian)(dian)(dian)壓。為消除過熱風險(xian)的(de)(de)同時(shi)以最(zui)高(gao)速度充(chong)電(dian)(dian)(dian)，獲得專利的(de)(de)熱調節電(dian)(dian)(dian)路可(ke)保持(chi) LTC4062 的(de)(de)結溫處于(yu)安全(quan)水平(ping)。此(ci)外，I/O 引腳可(ke)在絹(juan)流充(chong)電(dian)(dian)(dian)、正常充(chong)電(dian)(dian)(dian)和充(chong)電(dian)(dian)(dian)結束(shu)模式時(shi)報(bao)(bao)告充(chong)電(dian)(dian)(dian)狀態。

　　LTC4062 集成了(le)精確的微功率比較(jiao)器。這是一個非專用(yong)比較(jiao)器并具有通用(yong)輸(shu)入(ru)和(he)開漏輸(shu)出，能夠用(yong)于(yu)低(di)電(dian)池電(dian)量檢(jian)測或精確輸(shu)入(ru)電(dian)壓(ya)檢(jian)測等方面(mian)。

LTC4062 通過(guo)其 Smart StartTM 功能去除了(le)不(bu)必要的(de)(de)再充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期(qi)，從而(er)延長了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命。因為頻繁(fan)的(de)(de)再充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)會(hui)降低(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)容量并(bing)縮短電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命，所以(yi)當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源第(di)一次加到該(gai)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)上時(shi)(shi)(shi)，如果電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓高于(yu) 4.1V，那(nei) Smart Start 功能就會(hui)阻止新的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期(qi)啟(qi)(qi)動(dong)。該(gai)集(ji)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路還具有(you)一些充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)終止方式，這包括用(yong)戶可調(diao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流和充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)(shi)間(jian)、外部數字控制或自(zi)動(dong) C/10。LTC4062 采用(yong) 3mm x 3mm DFN 封(feng)裝，非常(chang)適合于(yu)從墻上適配器(qi)(qi)或 USB 對(dui) MP3 播放器(qi)(qi)、數碼(ma)相(xiang)機、PDA 和蜂窩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。　　LTC4062 能以(yi) ±0.35% 的(de)(de)準(zhun)確度(du)將(jiang)鋰(li)離子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(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(gai)器(qi)(qi)件無需外部檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、MOSFET 或隔離二級管，極大(da)地簡化了(le)設計。此(ci)外，LTC4062 具有(you)軟啟(qi)(qi)動(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，以(yi)最大(da)限(xian)度(du)地減小開始充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)(shi)的(de)(de)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。就通過(guo) USB 的(de)(de)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而(er)言，USB 控制器(qi)(qi)的(de)(de)邏輯引(yin)腳可以(yi)按照低(di)(di)功率或高功率選擇充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，從而(er)消除對(dui)外部分立組件的(de)(de)依(yi)賴(lai)。在充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周(zhou)期(qi)的(de)(de)任一時(shi)(shi)(shi)刻(ke)，LTC4062 都能關(guan)斷，從而(er)把電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流限(xian)制在低(di)(di)于(yu) 2uA。　　LTC4062 采用(yong) 10 引(yin)線 3mm x 3mm DFN 封(feng)裝。以(yi) 1,000 片(pian)為單位批量購買，每片(pian)起價(jia)為 1.95 美元(yuan)。　　性能概要：LTC4062　　? 充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流可編程至 1A 的(de)(de)獨(du)立充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)

　　? 直接用 USB 端(duan)口對(dui)單節鋰離子電(dian)池充(chong)電(dian)

　　? 高浮動電(dian)壓(ya)準確度：±0.35%

　　? 用于電池電量監視或(huo) AC 存(cun)在檢測(ce)的微功率比較器

　　? 熱調(diao)節最大限(xian)度地(di)提高充(chong)電(dian)速度，無過熱風險

　　? 可編程充電電流檢測/終止

　　? 可編程充電終(zhong)止計(ji)時器(qi)

　　? SmartStart 充電(dian)算法延長電(dian)池壽命(ming)

　　? 智(zhi)能脈(mo)沖故障指(zhi)示功能

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