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(lie)中率先面市的器件(jian)(jian)，可支持一(yi)個(ge)高(gao)達 2A 的輸出(chu)充(chong)電(dian)電(dian)流。這兩(liang)款器件(jian)(jian)均提供了一(yi)種(zhong)完整和高(gao)效的 1MHz 開(kai)關(guan)降壓型充(chong)電(dian)器解決方案(an)，只需(xu)使用一(yi)個(ge)輸入電(dian)容器。LTM8061 具備有源輸入電(dian)流管理功(gong)能，以避(bi)免(mian)電(dian)源軌電(dian)壓下(xia)降并向負載(zai)輸送最(zui)大的充(chong)電(dian)電(dian)流。

    LTM8062 可(ke)主動(dong)地管理(li)輸出(chu)充(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流，盡量(liang)增加從一個運用最(zui)(zui)大峰值功率跟蹤 (MPPT) 原(yuan)理(li)的太陽能(neng)電(dian)(dian)(dian)(dian)池(chi)所提供的功率。LTM8061 和 LTM8062 可(ke)在 4.95V 至(zhi) 32V 的輸入電(dian)(dian)(dian)(dian)壓范圍內(nei)運作，并(bing)支持預(yu)查(cha)驗、恒(heng)定(ding)電(dian)(dian)(dian)(dian)流和恒(heng)定(ding)電(dian)(dian)(dian)(dian)壓模式操作。準確(que)度分別為 0.5% 和 0.75% 的浮(fu)動(dong)電(dian)(dian)(dian)(dian)壓確(que)保(bao)在充(chong)(chong)電(dian)(dian)(dian)(dian)操作終止 (由一個最(zui)(zui)小電(dian)(dian)(dian)(dian)流門(men)限檢(jian)測或可(ke)調內(nei)部超(chao)時設定(ding)) 時實現最(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(ju)合物電(dian)(dian)(dian)池充電(dian)(dian)(dian)，并具有 4.1V、4.2V、8.2V 和(he) 8.4V的(de)浮動(dong)電(dian)(dian)(dian)壓。一個可在外部調節的(de)浮動(dong)電(dian)(dian)(dian)壓使 LTM8062 能支(zhi)持單節和(he)多節鋰(li)(li)離子電(dian)(dian)(dian)池、鋰(li)(li)聚(ju)合物電(dian)(dian)(dian)池、磷酸鐵(tie)鋰(li)(li)電(dian)(dian)(dian)池(LiFePO4)和(he)密封(feng)鉛(qian)酸 (SLA) 電(dian)(dian)(dian)池充電(dian)(dian)(dian)至 14.4V。

為了保持電(dian)(dian)(dian)池處于滿充(chong)(chong)電(dian)(dian)(dian)狀態，一旦電(dian)(dian)(dian)池電(dian)(dian)(dian)壓降至比(bi)浮置(zhi)電(dian)(dian)(dian)壓低 2.5% 時(shi)，LTM8061 和 LTM8062 就自(zi)動啟動再充(chong)(chong)電(dian)(dian)(dian)周(zhou)期。安全功能包括壞電(dian)(dian)(dian)池檢測和具故障指示并適用(yong)于 LED 的(de) NTC 電(dian)(dian)(dian)阻器輸入。當電(dian)(dian)(dian)源不存在時(shi)，內(nei)部輸入反(fan)向電(dian)(dian)(dian)壓隔離二極(ji)管可用(yong)來(lai)防止電(dian)(dian)(dian)池的(de)泄(xie)漏電(dian)(dian)(dian)流。LTM8061 和 LTM8062 采用(yong) RoHS 兼容的(de) 9mm x 15mm x 4.32mm LGA 封裝，千片(pian)批購價分別(bie)為每片(pian) 8.85 美元(yuan)(yuan)和 9.85 美元(yuan)(yuan)。