凌特(te)公司(si)（Linear Technology）推出集成(cheng)了微功率(lv)比較器(qi)(qi)的(de)(de)(de)緊湊型獨立(li)線性(xing)單節鋰離子電(dian)(dian)(dian)池充電(dian)(dian)(dian)器(qi)(qi) LTC4062。它具(ju)有保(bao)證充電(dian)(dian)(dian)安(an)(an)全(quan)性(xing)的(de)(de)(de)多(duo)種(zhong)先進功能(neng)、更高的(de)(de)(de)充電(dian)(dian)(dian)終止靈活性(xing)、更詳細的(de)(de)(de)狀(zhuang)態報(bao)告和更長的(de)(de)(de)電(dian)(dian)(dian)池壽命等特(te)性(xing)。在安(an)(an)全(quan)性(xing)方面，LTC4062 具(ju)有可調節的(de)(de)(de)充電(dian)(dian)(dian)終止計時(shi)器(qi)(qi)和防止電(dian)(dian)(dian)池過充電(dian)(dian)(dian)的(de)(de)(de)精確浮動電(dian)(dian)(dian)壓。為消除(chu)過熱(re)(re)風險的(de)(de)(de)同(tong)時(shi)以最高速度充電(dian)(dian)(dian)，獲得(de)專(zhuan)利的(de)(de)(de)熱(re)(re)調節電(dian)(dian)(dian)路可保(bao)持 LTC4062 的(de)(de)(de)結溫處(chu)于安(an)(an)全(quan)水平(ping)。此外(wai)，I/O 引腳可在絹(juan)流(liu)充電(dian)(dian)(dian)、正(zheng)常(chang)充電(dian)(dian)(dian)和充電(dian)(dian)(dian)結束模式(shi)時(shi)報(bao)告充電(dian)(dian)(dian)狀(zhuang)態。

　　LTC4062 集成了精(jing)確(que)的微功(gong)率比較器。這(zhe)是一(yi)個非專用比較器并具(ju)有通用輸(shu)入和開漏(lou)輸(shu)出，能夠用于(yu)低電(dian)池電(dian)量檢測(ce)或精(jing)確(que)輸(shu)入電(dian)壓檢測(ce)等(deng)方面。

LTC4062 通(tong)過其 Smart StartTM 功能去(qu)除了(le)不必要的(de)(de)再充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)，從(cong)而(er)(er)延長了(le)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命。因為(wei)頻繁的(de)(de)再充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)會降低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)容量(liang)并縮短電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)壽命，所以(yi)(yi)(yi)當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)第一次(ci)加到該充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)上時，如果(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)高(gao)(gao)于(yu) 4.1V，那(nei) Smart Start 功能就會阻止(zhi)新的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)啟(qi)動。該集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路還具(ju)有一些充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)終止(zhi)方式，這(zhe)包括用(yong)(yong)戶可調(diao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)和充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時間(jian)、外(wai)部(bu)數字控制或(huo)(huo)自動 C/10。LTC4062 采用(yong)(yong) 3mm x 3mm DFN 封裝，非常(chang)適合于(yu)從(cong)墻上適配器(qi)(qi)(qi)或(huo)(huo) USB 對(dui) MP3 播放(fang)器(qi)(qi)(qi)、數碼(ma)相(xiang)機(ji)、PDA 和蜂窩電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)話(hua)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。　　LTC4062 能以(yi)(yi)(yi) ±0.35% 的(de)(de)準確度將鋰離子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)至(zhi) 4.2V 浮動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)。該器(qi)(qi)(qi)件無需外(wai)部(bu)檢(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻、MOSFET 或(huo)(huo)隔離二級管，極大地簡化了(le)設計。此外(wai)，LTC4062 具(ju)有軟啟(qi)動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路，以(yi)(yi)(yi)最(zui)大限度地減小開始(shi)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)時的(de)(de)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)。就通(tong)過 USB 的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)而(er)(er)言，USB 控制器(qi)(qi)(qi)的(de)(de)邏輯(ji)引腳可以(yi)(yi)(yi)按照低功率(lv)(lv)或(huo)(huo)高(gao)(gao)功率(lv)(lv)選(xuan)擇(ze)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)，從(cong)而(er)(er)消除對(dui)外(wai)部(bu)分(fen)立組(zu)件的(de)(de)依賴。在充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)周期(qi)的(de)(de)任一時刻，LTC4062 都(dou)能關斷，從(cong)而(er)(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(liu)(liu)限制在低于(yu) 2uA。　　LTC4062 采用(yong)(yong) 10 引線 3mm x 3mm DFN 封裝。以(yi)(yi)(yi) 1,000 片為(wei)單位(wei)批量(liang)購買(mai)，每片起價為(wei) 1.95 美元。　　性能概要：LTC4062　　? 充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)可編程至(zhi) 1A 的(de)(de)獨立充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)

　　? 直接(jie)用 USB 端口對(dui)單節鋰離子電池充電

　　? 高浮動電壓準確度：±0.35%

　　? 用于電池電量監視或 AC 存在(zai)檢(jian)測的微功率比較(jiao)器

　　? 熱調節最大限(xian)度地提高充(chong)電速(su)度，無(wu)過(guo)熱風險

　　? 可編(bian)程(cheng)充電(dian)電(dian)流檢測/終(zhong)止

　　? 可編程(cheng)充(chong)電終(zhong)止計時器(qi)

　　? SmartStart 充電(dian)算(suan)法延長電(dian)池壽命

　　? 智能脈沖故障指示功能

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