凌特(te)公司（Linear Technology）推出集成了微功(gong)率比較器(qi)的(de)(de)(de)(de)緊湊(cou)型(xing)獨立線性單節鋰(li)離子電(dian)(dian)池充(chong)(chong)電(dian)(dian)器(qi) LTC4062。它具有保證充(chong)(chong)電(dian)(dian)安全性的(de)(de)(de)(de)多種先進功(gong)能、更(geng)高(gao)的(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)終止(zhi)靈(ling)活性、更(geng)詳(xiang)細的(de)(de)(de)(de)狀態(tai)報(bao)(bao)告和更(geng)長的(de)(de)(de)(de)電(dian)(dian)池壽命等(deng)特(te)性。在(zai)(zai)安全性方(fang)面，LTC4062 具有可調(diao)節的(de)(de)(de)(de)充(chong)(chong)電(dian)(dian)終止(zhi)計時(shi)器(qi)和防止(zhi)電(dian)(dian)池過充(chong)(chong)電(dian)(dian)的(de)(de)(de)(de)精確浮動電(dian)(dian)壓。為消除過熱風險的(de)(de)(de)(de)同時(shi)以最高(gao)速度充(chong)(chong)電(dian)(dian)，獲(huo)得專利(li)的(de)(de)(de)(de)熱調(diao)節電(dian)(dian)路(lu)可保持(chi) LTC4062 的(de)(de)(de)(de)結溫處于安全水(shui)平。此(ci)外，I/O 引(yin)腳可在(zai)(zai)絹流充(chong)(chong)電(dian)(dian)、正常充(chong)(chong)電(dian)(dian)和充(chong)(chong)電(dian)(dian)結束模式時(shi)報(bao)(bao)告充(chong)(chong)電(dian)(dian)狀態(tai)。

　　LTC4062 集(ji)成(cheng)了精(jing)確(que)的(de)微功率比(bi)較(jiao)器(qi)。這是一(yi)個(ge)非(fei)專用(yong)比(bi)較(jiao)器(qi)并(bing)具(ju)有通用(yong)輸入(ru)和開漏輸出，能(neng)夠用(yong)于低電(dian)池電(dian)量檢測(ce)或精(jing)確(que)輸入(ru)電(dian)壓(ya)檢測(ce)等方(fang)面(mian)。

LTC4062 通(tong)過其 Smart StartTM 功能(neng)去除了不必要(yao)的(de)(de)再充(chong)(chong)電(dian)(dian)(dian)周(zhou)期，從(cong)(cong)而延長了電(dian)(dian)(dian)池(chi)壽(shou)(shou)命。因為頻繁的(de)(de)再充(chong)(chong)電(dian)(dian)(dian)會(hui)降低電(dian)(dian)(dian)池(chi)容量并(bing)縮短(duan)電(dian)(dian)(dian)池(chi)壽(shou)(shou)命，所以(yi)當電(dian)(dian)(dian)源第一次加(jia)到該(gai)充(chong)(chong)電(dian)(dian)(dian)器上時，如(ru)果(guo)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓高(gao)(gao)于(yu) 4.1V，那 Smart Start 功能(neng)就會(hui)阻止新的(de)(de)充(chong)(chong)電(dian)(dian)(dian)周(zhou)期啟(qi)(qi)動。該(gai)集成電(dian)(dian)(dian)路還具有一些充(chong)(chong)電(dian)(dian)(dian)終止方式(shi)，這包括用戶可調電(dian)(dian)(dian)流和(he)(he)充(chong)(chong)電(dian)(dian)(dian)時間、外(wai)(wai)部數(shu)字控(kong)制或(huo)自(zi)動 C/10。LTC4062 采(cai)用 3mm x 3mm DFN 封裝(zhuang)，非常(chang)適(shi)合于(yu)從(cong)(cong)墻上適(shi)配器或(huo) USB 對 MP3 播放器、數(shu)碼相機、PDA 和(he)(he)蜂窩電(dian)(dian)(dian)話(hua)中的(de)(de)電(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)。　　LTC4062 能(neng)以(yi) ±0.35% 的(de)(de)準確度(du)將鋰(li)離子電(dian)(dian)(dian)池(chi)充(chong)(chong)電(dian)(dian)(dian)至 4.2V 浮動電(dian)(dian)(dian)壓。該(gai)器件無需外(wai)(wai)部檢測電(dian)(dian)(dian)阻、MOSFET 或(huo)隔離二級管，極大地簡化了設計。此外(wai)(wai)，LTC4062 具有軟啟(qi)(qi)動電(dian)(dian)(dian)路，以(yi)最大限度(du)地減(jian)小(xiao)開始充(chong)(chong)電(dian)(dian)(dian)時的(de)(de)浪涌(yong)電(dian)(dian)(dian)流。就通(tong)過 USB 的(de)(de)充(chong)(chong)電(dian)(dian)(dian)而言(yan)，USB 控(kong)制器的(de)(de)邏(luo)輯引腳(jiao)可以(yi)按照低功率或(huo)高(gao)(gao)功率選(xuan)擇充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流，從(cong)(cong)而消除對外(wai)(wai)部分(fen)立組件的(de)(de)依(yi)賴。在(zai)充(chong)(chong)電(dian)(dian)(dian)周(zhou)期的(de)(de)任一時刻，LTC4062 都能(neng)關斷，從(cong)(cong)而把電(dian)(dian)(dian)池(chi)漏電(dian)(dian)(dian)流限制在(zai)低于(yu) 2uA。　　LTC4062 采(cai)用 10 引線(xian) 3mm x 3mm DFN 封裝(zhuang)。以(yi) 1,000 片(pian)為單(dan)位批(pi)量購(gou)買，每片(pian)起價為 1.95 美(mei)元。　　性能(neng)概要(yao)：LTC4062　　? 充(chong)(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流可編程至 1A 的(de)(de)獨立充(chong)(chong)電(dian)(dian)(dian)器

　　? 直接用 USB 端口對單節鋰離子電池充電

　　? 高浮動電壓準確(que)度：±0.35%

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

　　? 熱(re)調節最大限度地提高(gao)充(chong)電速度，無過熱(re)風險

　　? 可編程充電(dian)(dian)電(dian)(dian)流(liu)檢測/終止

　　? 可編程充電終止計時器(qi)

　　? SmartStart 充電算(suan)法延(yan)長(chang)電池壽命

　　? 智能(neng)脈沖(chong)故障指示(shi)功能(neng)

　　? 扁(bian)平 10 引線 DFN 封裝（3mm x 3mm x 0.75mm）