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(mei)舉功(gong)能，可(ke)自動與(yu)USB主機(ji)進行交互(hu)，無需(xu)(xu)處理器(qi)干預即可(ke)優(you)化充(chong)電(dian)(dian)電(dian)(dian)流(liu)。該功(gong)能無需(xu)(xu)使用單獨(du)的(de)微控制器(qi)和系統軟件，因(yin)而可(ke)提供業內僅有的(de)單機(ji)運行充(chong)電(dian)(dian)方案。

　　智(zhi)能電(dian)(dian)(dian)(dian)(dian)源(yuan)選擇器(Smart Power Selector)能夠實現USB電(dian)(dian)(dian)(dian)(dian)源(yuan)輸入(ru)(ru)(VBUS)至電(dian)(dian)(dian)(dian)(dian)池和(he)系統負(fu)載(zai)的電(dian)(dian)(dian)(dian)(dian)源(yuan)無縫分配。該特性允(yun)許在(zai)為系統供電(dian)(dian)(dian)(dian)(dian)的同時對電(dian)(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)(dian)，也(ye)允(yun)許便攜設備(bei)在(zai)電(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)量耗盡(jin)或沒有電(dian)(dian)(dian)(dian)(dian)池的情(qing)況(kuang)下工作(zuo)。當(dang)系統負(fu)載(zai)超出(chu)VBUS輸入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)流(liu)限制時，電(dian)(dian)(dian)(dian)(dian)池還可為VBUS供電(dian)(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案(an)。此外，還可(ke)靈活設置(zhi)快充(chong)電(dian)(dian)(dian)(dian)流、終止電(dian)(dian)(dian)(dian)流和充(chong)電(dian)(dian)(dian)(dian)定時(shi)(shi)器持續(xu)時(shi)(shi)間。MAX8895還支持自(zi)適(shi)應電(dian)(dian)(dian)(dian)池充(chong)電(dian)(dian)(dian)(dian)，必要時(shi)(shi)可(ke)降低(di)充(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流，以防止損壞充(chong)電(dian)(dian)(dian)(dian)源。其(qi)它特性包括：充(chong)電(dian)(dian)(dian)(dian)狀態標志、充(chong)電(dian)(dian)(dian)(dian)故障標志、電(dian)(dian)(dian)(dian)源就(jiu)緒監測器、電(dian)(dian)(dian)(dian)池熱(re)敏電(dian)(dian)(dian)(dian)阻監測器、安全充(chong)電(dian)(dian)(dian)(dian)定時(shi)(shi)器以及欠壓(ya)鎖定(UVLO)。

　　MAX8895提(ti)供兩種USB選項：MAX8895X (低速)和(he)(he)MAX8895Y (全速)，兩個版本的器件均工作在(zai)4.0V至6.6V電源(yuan)。MAX8895采(cai)用微型、2.5mm x 2.5mm、25焊球(qiu)(qiu)WLP封裝(焊球(qiu)(qiu)間距(ju)為0.4mm)，工作在(zai)-40°C至+85°C擴展級溫度(du)范圍(wei)。可申請(qing)獲取樣(yang)品(pin)和(he)(he)評估板。