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(de)器(qi)件(jian)，可支持一個高達(da) 2A 的(de)輸(shu)(shu)出(chu)充電(dian)電(dian)流(liu)。這兩款器(qi)件(jian)均提供了(le)一種完(wan)整和(he)高效的(de) 1MHz 開關降壓型(xing)充電(dian)器(qi)解決方(fang)案，只需使用一個輸(shu)(shu)入電(dian)容器(qi)。LTM8061 具備(bei)有(you)源(yuan)輸(shu)(shu)入電(dian)流(liu)管理功能，以避免電(dian)源(yuan)軌電(dian)壓下(xia)降并向負載輸(shu)(shu)送最大的(de)充電(dian)電(dian)流(liu)。

    LTM8062 可(ke)主(zhu)動地管理輸出充電(dian)(dian)電(dian)(dian)流，盡量增(zeng)加從(cong)一個運(yun)用最大(da)(da)峰值功(gong)率(lv)跟(gen)蹤 (MPPT) 原理的(de)太陽能電(dian)(dian)池所提供(gong)的(de)功(gong)率(lv)。LTM8061 和 LTM8062 可(ke)在(zai) 4.95V 至(zhi) 32V 的(de)輸入電(dian)(dian)壓范圍內運(yun)作(zuo)，并支(zhi)持預查驗、恒定(ding)電(dian)(dian)流和恒定(ding)電(dian)(dian)壓模式操(cao)作(zuo)。準確度分別(bie)為 0.5% 和 0.75% 的(de)浮(fu)動電(dian)(dian)壓確保在(zai)充電(dian)(dian)操(cao)作(zuo)終止 (由一個最小電(dian)(dian)流門限檢測或可(ke)調內部超時設定(ding)) 時實現(xian)最大(da)(da)的(de)能量存儲(chu)。

    LTM8061特別適用于給鋰離子電池或鋰(li)(li)聚合物電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)，并具有 4.1V、4.2V、8.2V 和 8.4V的浮動電(dian)(dian)(dian)(dian)壓(ya)。一個可(ke)在外部調節的浮動電(dian)(dian)(dian)(dian)壓(ya)使 LTM8062 能支持(chi)單節和多節鋰(li)(li)離子電(dian)(dian)(dian)(dian)池(chi)、鋰(li)(li)聚合物電(dian)(dian)(dian)(dian)池(chi)、磷酸(suan)(suan)鐵(tie)鋰(li)(li)電(dian)(dian)(dian)(dian)池(chi)(LiFePO4)和密(mi)封(feng)鉛酸(suan)(suan) (SLA) 電(dian)(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)(dian)至 14.4V。

為了(le)保持電(dian)(dian)(dian)池(chi)處于滿(man)充電(dian)(dian)(dian)狀態，一旦電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓降至比浮置電(dian)(dian)(dian)壓低 2.5% 時，LTM8061 和(he)(he) LTM8062 就自動啟動再充電(dian)(dian)(dian)周(zhou)期。安全功能包括壞電(dian)(dian)(dian)池(chi)檢(jian)測和(he)(he)具故障指示并適(shi)用(yong)于 LED 的(de) NTC 電(dian)(dian)(dian)阻器輸入。當電(dian)(dian)(dian)源不存在時，內部輸入反(fan)向電(dian)(dian)(dian)壓隔離二(er)極管可用(yong)來防止電(dian)(dian)(dian)池(chi)的(de)泄(xie)漏電(dian)(dian)(dian)流。LTM8061 和(he)(he) LTM8062 采用(yong) RoHS 兼容的(de) 9mm x 15mm x 4.32mm LGA 封裝，千(qian)片(pian)批購價分(fen)別為每(mei)片(pian) 8.85 美元(yuan)和(he)(he) 9.85 美元(yuan)。