Maxim推出線性電池充電器MAX8895，器件適用于符合USB電池充電規范(1.1版本)的Bluetooth耳機和便攜設備。MAX8895獨特地集成了自動適配器檢測功能，可分辨USB設備、USB充電器和專用充電器。器件還具有(you)USB枚舉功能，可自動與(yu)USB主機進行(xing)(xing)交互(hu)，無需(xu)處理器干預(yu)即可優化充電電流。該(gai)功能無需(xu)使用單獨的微(wei)控制器和系統軟件，因(yin)而(er)可提(ti)供業內僅(jin)有(you)的單機運行(xing)(xing)充電方案。

　　智能(neng)電(dian)源(yuan)(yuan)選擇器(qi)(Smart Power Selector)能(neng)夠實現USB電(dian)源(yuan)(yuan)輸入(ru)(VBUS)至電(dian)池(chi)(chi)和系統(tong)負(fu)(fu)載的(de)(de)電(dian)源(yuan)(yuan)無縫(feng)分配。該特性允(yun)許在(zai)為系統(tong)供電(dian)的(de)(de)同時(shi)對電(dian)池(chi)(chi)充電(dian)，也允(yun)許便(bian)攜設(she)備在(zai)電(dian)池(chi)(chi)電(dian)量耗(hao)盡或沒有電(dian)池(chi)(chi)的(de)(de)情況下(xia)工作。當系統(tong)負(fu)(fu)載超出(chu)VBUS輸入(ru)電(dian)流限制時(shi)，電(dian)池(chi)(chi)還可為VBUS供電(dian)。

　　MAX8895內置電池斷開開關、電流檢測電路、熱調節電路、MOSFET調整管以及高達16V的過壓保護(OVP)，可提供易于應用、極為緊湊的充電器方案。此(ci)外(wai)，還(huan)(huan)可靈(ling)活設置快充電(dian)(dian)(dian)(dian)流、終止電(dian)(dian)(dian)(dian)流和充電(dian)(dian)(dian)(dian)定(ding)時(shi)(shi)(shi)器(qi)持續(xu)時(shi)(shi)(shi)間(jian)。MAX8895還(huan)(huan)支持自適應(ying)電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)，必要時(shi)(shi)(shi)可降低充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流，以(yi)防(fang)止損(sun)壞充電(dian)(dian)(dian)(dian)源。其(qi)它特性(xing)包括：充電(dian)(dian)(dian)(dian)狀態標志(zhi)、充電(dian)(dian)(dian)(dian)故障標志(zhi)、電(dian)(dian)(dian)(dian)源就(jiu)緒監(jian)測(ce)器(qi)、電(dian)(dian)(dian)(dian)池熱(re)敏電(dian)(dian)(dian)(dian)阻監(jian)測(ce)器(qi)、安全充電(dian)(dian)(dian)(dian)定(ding)時(shi)(shi)(shi)器(qi)以(yi)及(ji)欠壓(ya)鎖定(ding)(UVLO)。

　　MAX8895提(ti)供兩種USB選項：MAX8895X (低(di)速)和(he)MAX8895Y (全速)，兩個版本(ben)的器件(jian)均工作在(zai)4.0V至6.6V電源。MAX8895采用微型(xing)、2.5mm x 2.5mm、25焊球(qiu)WLP封裝(zhuang)(焊球(qiu)間距為0.4mm)，工作在(zai)-40°C至+85°C擴展級(ji)溫度范圍(wei)。可(ke)申請獲取樣品和(he)評估(gu)板。