凌力爾特公司(Linear Technology Corporation) 推出 LTM8061 和 LTM8062，這兩款器件已開始供貨，它們是一個新型完整系統級封裝 μModule?  充電器系列中率先面市的器件，可支持一個高達 2A 的輸出充電電流。這兩款器件均提供了一種完整和高效的 1MHz 開關降壓型充電器解決方案(an)，只需(xu)使用一個輸入電(dian)(dian)容器(qi)。LTM8061 具備有源(yuan)輸入電(dian)(dian)流管理(li)功能，以(yi)避免電(dian)(dian)源(yuan)軌電(dian)(dian)壓(ya)下(xia)降并向負載輸送最大(da)的充(chong)電(dian)(dian)電(dian)(dian)流。

    LTM8062 可主動(dong)地管理輸出充(chong)電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)，盡量(liang)增加從一個運用最(zui)(zui)大峰值(zhi)功率跟蹤 (MPPT) 原理的太陽(yang)能(neng)電(dian)(dian)(dian)池所提供的功率。LTM8061 和 LTM8062 可在(zai)(zai) 4.95V 至(zhi) 32V 的輸入電(dian)(dian)(dian)壓(ya)范圍內(nei)運作(zuo)(zuo)，并支持預查驗、恒(heng)定電(dian)(dian)(dian)流(liu)和恒(heng)定電(dian)(dian)(dian)壓(ya)模(mo)式操作(zuo)(zuo)。準確(que)度(du)分(fen)別為(wei) 0.5% 和 0.75% 的浮動(dong)電(dian)(dian)(dian)壓(ya)確(que)保在(zai)(zai)充(chong)電(dian)(dian)(dian)操作(zuo)(zuo)終(zhong)止 (由一個最(zui)(zui)小電(dian)(dian)(dian)流(liu)門限(xian)檢測或可調內(nei)部(bu)超時設(she)定) 時實現(xian)最(zui)(zui)大的能(neng)量(liang)存儲。

    LTM8061特別適用于給鋰離子電池或鋰(li)(li)聚合物電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)，并(bing)具有(you) 4.1V、4.2V、8.2V 和 8.4V的浮動電(dian)(dian)(dian)壓。一個可在外(wai)部(bu)調(diao)節的浮動電(dian)(dian)(dian)壓使 LTM8062 能支持(chi)單節和多節鋰(li)(li)離子電(dian)(dian)(dian)池、鋰(li)(li)聚合物電(dian)(dian)(dian)池、磷酸(suan)鐵鋰(li)(li)電(dian)(dian)(dian)池(LiFePO4)和密(mi)封鉛酸(suan) (SLA) 電(dian)(dian)(dian)池充(chong)(chong)電(dian)(dian)(dian)至(zhi) 14.4V。

為了保(bao)持電(dian)(dian)(dian)(dian)池處于(yu)滿充(chong)電(dian)(dian)(dian)(dian)狀態，一旦電(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)壓(ya)降至(zhi)比浮(fu)置電(dian)(dian)(dian)(dian)壓(ya)低 2.5% 時(shi)，LTM8061 和 LTM8062 就自動(dong)啟動(dong)再充(chong)電(dian)(dian)(dian)(dian)周(zhou)期。安全功能包括壞電(dian)(dian)(dian)(dian)池檢測(ce)和具故障指(zhi)示(shi)并適(shi)用(yong)于(yu) LED 的(de) NTC 電(dian)(dian)(dian)(dian)阻器(qi)輸(shu)入。當電(dian)(dian)(dian)(dian)源不存(cun)在時(shi)，內部輸(shu)入反向(xiang)電(dian)(dian)(dian)(dian)壓(ya)隔離(li)二極管可用(yong)來(lai)防止電(dian)(dian)(dian)(dian)池的(de)泄漏電(dian)(dian)(dian)(dian)流(liu)。LTM8061 和 LTM8062 采用(yong) RoHS 兼容的(de) 9mm x 15mm x 4.32mm LGA 封裝(zhuang)，千片(pian)批購價分(fen)別(bie)為每(mei)片(pian) 8.85 美元(yuan)和 9.85 美元(yuan)。