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(qi)件還具有USB枚舉功能(neng)，可自動與USB主(zhu)機(ji)進行交互，無需(xu)處理器(qi)干(gan)預即(ji)可優(you)化充(chong)電電流。該功能(neng)無需(xu)使(shi)用單(dan)獨(du)的(de)微控(kong)制器(qi)和(he)系(xi)統(tong)軟件，因而(er)可提供業(ye)內(nei)僅有的(de)單(dan)機(ji)運行充(chong)電方案。

　　智能(neng)電(dian)(dian)(dian)(dian)源(yuan)選(xuan)擇器(Smart Power Selector)能(neng)夠(gou)實現USB電(dian)(dian)(dian)(dian)源(yuan)輸入(ru)(VBUS)至(zhi)電(dian)(dian)(dian)(dian)池和(he)系(xi)(xi)統負載(zai)的(de)電(dian)(dian)(dian)(dian)源(yuan)無縫分配。該特性允(yun)許在(zai)為(wei)系(xi)(xi)統供(gong)電(dian)(dian)(dian)(dian)的(de)同(tong)時對電(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)，也允(yun)許便攜設備在(zai)電(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)量耗盡或沒(mei)有電(dian)(dian)(dian)(dian)池的(de)情況下工作(zuo)。當系(xi)(xi)統負載(zai)超出VBUS輸入(ru)電(dian)(dian)(dian)(dian)流限制時，電(dian)(dian)(dian)(dian)池還(huan)可為(wei)VBUS供(gong)電(dian)(dian)(dian)(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(fang)案。此外，還可(ke)靈活設(she)置快充(chong)電(dian)(dian)流、終止(zhi)電(dian)(dian)流和充(chong)電(dian)(dian)定(ding)時(shi)(shi)器(qi)持續時(shi)(shi)間。MAX8895還支持自適(shi)應電(dian)(dian)池(chi)充(chong)電(dian)(dian)，必要時(shi)(shi)可(ke)降低充(chong)電(dian)(dian)電(dian)(dian)流，以防止(zhi)損壞(huai)充(chong)電(dian)(dian)源。其(qi)它特(te)性包括：充(chong)電(dian)(dian)狀(zhuang)態標志、充(chong)電(dian)(dian)故(gu)障標志、電(dian)(dian)源就緒監測器(qi)、電(dian)(dian)池(chi)熱(re)敏電(dian)(dian)阻監測器(qi)、安(an)全(quan)充(chong)電(dian)(dian)定(ding)時(shi)(shi)器(qi)以及欠(qian)壓鎖(suo)定(ding)(UVLO)。

　　MAX8895提供兩種USB選(xuan)項：MAX8895X (低速)和MAX8895Y (全速)，兩個版本的(de)器件均工(gong)作在(zai)4.0V至6.6V電源。MAX8895采用微型、2.5mm x 2.5mm、25焊球WLP封裝(焊球間距為0.4mm)，工(gong)作在(zai)-40°C至+85°C擴展級(ji)溫度(du)范圍(wei)。可申請獲取樣品和評估(gu)板(ban)。