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(xi)列中率先面市的器件，可支持一(yi)個(ge)高達 2A 的輸出(chu)充(chong)電(dian)電(dian)流。這兩款器件均(jun)提供(gong)了(le)一(yi)種完整和(he)高效的 1MHz 開關降壓型充(chong)電(dian)器解決(jue)方案(an)，只需使用(yong)一(yi)個(ge)輸入電(dian)容器。LTM8061 具(ju)備(bei)有(you)源(yuan)輸入電(dian)流管(guan)理功能，以避免電(dian)源(yuan)軌電(dian)壓下降并(bing)向負載輸送最大的充(chong)電(dian)電(dian)流。

    LTM8062 可主動地管理(li)(li)輸出充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流，盡量(liang)增加從(cong)一(yi)個運(yun)用(yong)最(zui)大(da)峰值(zhi)功(gong)率跟蹤 (MPPT) 原理(li)(li)的太(tai)陽(yang)能(neng)電(dian)(dian)(dian)(dian)池所提供的功(gong)率。LTM8061 和 LTM8062 可在 4.95V 至(zhi) 32V 的輸入電(dian)(dian)(dian)(dian)壓范圍內(nei)運(yun)作，并支持預查驗(yan)、恒定電(dian)(dian)(dian)(dian)流和恒定電(dian)(dian)(dian)(dian)壓模式操作。準確度(du)分別為(wei) 0.5% 和 0.75% 的浮動電(dian)(dian)(dian)(dian)壓確保在充電(dian)(dian)(dian)(dian)操作終止 (由(you)一(yi)個最(zui)小電(dian)(dian)(dian)(dian)流門限檢(jian)測或可調內(nei)部超時設定) 時實(shi)現最(zui)大(da)的能(neng)量(liang)存(cun)儲(chu)。

    LTM8061特別適用于給鋰離子電池或(huo)鋰(li)聚合物電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)，并具有 4.1V、4.2V、8.2V 和(he) 8.4V的浮動電(dian)(dian)(dian)(dian)壓。一(yi)個可在(zai)外部(bu)調節(jie)(jie)(jie)的浮動電(dian)(dian)(dian)(dian)壓使 LTM8062 能支持單節(jie)(jie)(jie)和(he)多節(jie)(jie)(jie)鋰(li)離(li)子電(dian)(dian)(dian)(dian)池(chi)、鋰(li)聚合物電(dian)(dian)(dian)(dian)池(chi)、磷酸(suan)鐵鋰(li)電(dian)(dian)(dian)(dian)池(chi)(LiFePO4)和(he)密封鉛酸(suan) (SLA) 電(dian)(dian)(dian)(dian)池(chi)充(chong)電(dian)(dian)(dian)(dian)至 14.4V。

為了保持電(dian)池(chi)(chi)處于滿充(chong)電(dian)狀態，一旦電(dian)池(chi)(chi)電(dian)壓(ya)降至比浮置電(dian)壓(ya)低 2.5% 時，LTM8061 和(he)(he) LTM8062 就自(zi)動(dong)啟動(dong)再充(chong)電(dian)周期。安全(quan)功(gong)能包(bao)括壞電(dian)池(chi)(chi)檢測和(he)(he)具(ju)故障指示并適用于 LED 的 NTC 電(dian)阻器輸(shu)入。當電(dian)源不存在時，內部輸(shu)入反向電(dian)壓(ya)隔(ge)離二極管可用來防止電(dian)池(chi)(chi)的泄漏電(dian)流。LTM8061 和(he)(he) LTM8062 采用 RoHS 兼容(rong)的 9mm x 15mm x 4.32mm LGA 封裝，千片批購價分別為每片 8.85 美(mei)元(yuan)(yuan)和(he)(he) 9.85 美(mei)元(yuan)(yuan)。