全球領先的單片機和模擬半導體供應商――Microchip Technology Inc.（美國微芯科技公司）日前宣布，推出兩個具有過壓保護（OVP）功能的充電管理控制器系列，可防止輸入電壓尖峰造成電池充電器電路的過熱和損壞。MCP73113、MCP73114和MCP73213鋰離子（Li-Ion）電池及MCP73123和MCP73223磷酸鐵鋰電池充電器具備高精度(du)電壓調(diao)節功能和集成的傳輸晶體管。這些(xie)特點的結合使便攜式(shi)電子設(she)備設(she)計(ji)的體積更(geng)(geng)(geng)小、更(geng)(geng)(geng)安全，而且運行時間更(geng)(geng)(geng)長，適用于消費類、醫療和工業市場。

      Microchip新款充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)解決了(le)消費者日益重(zhong)視的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)應用的(de)安全性(xing)和(he)(he)(he)效(xiao)率問題。所有這(zhe)些(xie)新器(qi)件的(de)最大輸入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓為(wei)18V；而且有兩種OVP設(she)置點(dian)――單(dan)節(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)MCP73114和(he)(he)(he)MCP73113/23充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)為(wei)5.8V和(he)(he)(he)6.5V，雙節(jie)MCP73213和(he)(he)(he)MCP73123充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)為(wei)13V。此外，MCP73113、MCP73114和(he)(he)(he)MCP73213器(qi)件可(ke)為(wei)鋰離子電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)提供各種充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓選擇――單(dan)節(jie)為(wei)4.1至(zhi)4.4V，雙節(jie)為(wei)8.2至(zhi)8.8V。MCP73123和(he)(he)(he)MCP73223器(qi)件適(shi)用于LiFePO4電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)，并分別提供3.6V和(he)(he)(he)7.2V的(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓選擇。

      Microchip模擬(ni)和接口產(chan)品部市(shi)場營(ying)銷副總(zong)裁Bryan Liddiard表示(shi)：“MCP731XX和MCP732XX電(dian)池充(chong)(chong)電(dian)器(qi)滿足了客戶對簡單、高效的(de)(de)(de)充(chong)(chong)電(dian)解(jie)決方案的(de)(de)(de)需求，同(tong)(tong)時以過壓保護的(de)(de)(de)形式增加一個額(e)外的(de)(de)(de)安全措施(shi)。通過為日漸(jian)重要的(de)(de)(de)LiFePO4電(dian)池提供不同(tong)(tong)的(de)(de)(de)充(chong)(chong)電(dian)方案，Microchip也滿足了不斷發展的(de)(de)(de)電(dian)池市(shi)場。”

MCP73113和MCP73114單節鋰離子電池充電器與MCP73123單節(jie)(jie)LiFePO4電(dian)(dian)池充(chong)電(dian)(dian)器(qi)的(de)電(dian)(dian)壓(ya)(ya)調(diao)(diao)節(jie)(jie)精度高達0.5％；雙(shuang)節(jie)(jie)MCP73213鋰離子和(he)MCP73223 LiFePO4器(qi)件的(de)電(dian)(dian)壓(ya)(ya)調(diao)(diao)節(jie)(jie)精度為0.6％。這(zhe)些高精度的(de)電(dian)(dian)壓(ya)(ya)調(diao)(diao)節(jie)(jie)可延長每次充(chong)電(dian)(dian)后電(dian)(dian)池的(de)使(shi)用(yong)壽命，最終延長便(bian)攜式(shi)產品兩次充(chong)電(dian)(dian)之間的(de)運行時間。此(ci)外，所(suo)有(you)充(chong)電(dian)(dian)器(qi)都(dou)采用(yong)了集成(cheng)的(de)傳輸(shu)晶體管，無需增加外部FET，并降低了整(zheng)體設計成(cheng)本(ben)、尺寸(cun)和(he)復雜性。

      由(you)于其獨特的(de)功能和化學組合(he)，這些新型充電器(qi)是消費類（如(ru)GPS裝置、便(bian)攜式(shi)媒體播放(fang)器(qi)、手機(ji)充電器(qi)、玩具、照相機(ji)和攝像機(ji)及藍牙耳(er)機(ji)）、醫(yi)療（如(ru)便(bian)攜式(shi)血糖儀(yi)及血壓(ya)和心(xin)率監測儀(yi)）和工(gong)業市場(chang)（如(ru)銷售點終端、手持式(shi)條碼掃描器(qi)和其他便(bian)攜設備）的(de)理(li)想選擇(ze)。

開發工具支持

    Microchip還推出了兩款支持新型充電器的評估板。MCP73113 OVP單節鋰離子電池充電器評(ping)(ping)估板（部(bu)件編(bian)號MCP73113EV-1SOVP）為(wei)(wei)用戶(hu)提供一個測試單節鋰(li)離(li)子電(dian)池基(ji)本功能(neng)的平臺，其充(chong)電(dian)電(dian)壓為(wei)(wei)4.2V，過(guo)壓保護(hu)(hu)為(wei)(wei)6.5V。MCP73213評(ping)(ping)估板（部(bu)件編(bian)號MCP73213EV-2SOVP）有助于用戶(hu)測試雙節鋰(li)離(li)子電(dian)池的基(ji)本功能(neng)，其充(chong)電(dian)電(dian)壓為(wei)(wei)8.4V，過(guo)壓保護(hu)(hu)為(wei)(wei)13V。現可(ke)通過(guo)//www.microchipDIRECT.com購買評(ping)(ping)估板。

    此外(wai)，Microchip還提供應(ying)用(yong)筆記AN1276，《使用(yong)MCP73123設計低成(cheng)本磷酸鐵鋰(li)（LiFePO4）電池充電器(qi)》。可(ke)通過(guo)//www.microchip.com/Battery下(xia)載(zai)該(gai)文(wen)檔。

封裝和供貨情況

    MCP731XX和(he)MCP732XX充電器(qi)均采用10引腳3 mm x 3 mm DFN封(feng)裝(zhuang)。可在//sample.microchip.com訂購(gou)各款充電器(qi)的樣片，通過//www.microchipDIRECT.com進行(xing)批量(liang)訂購(gou)。欲了(le)解更詳盡資料(liao)，請聯絡Microchip銷售代表或全球授權分(fen)銷商，也可瀏覽Microchip網站(zhan)//www.microchip.com/Battery。

Microchip客戶(hu)支(zhi)持

    Microchip致力于通過(guo)(guo)幫助(zhu)設計工程(cheng)師更加(jia)快捷(jie)、高效地開發(fa)(fa)產品而(er)為客戶(hu)(hu)提供(gong)(gong)有(you)力支持。客戶(hu)(hu)可訪(fang)問//www.microchip.com獲得Microchip提供(gong)(gong)的(de)四(si)類(lei)主要(yao)服務(wu)：“支持”區(qu)(qu)能(neng)確保客戶(hu)(hu)提出的(de)問題得到快速解答；“樣片”區(qu)(qu)可提供(gong)(gong)所有(you)Microchip器(qi)件(jian)的(de)評估樣片；microchipDIRECT可提供(gong)(gong)24小時的(de)報(bao)價、訂貨、庫(ku)存(cun)及信(xin)用服務(wu)，讓客戶(hu)(hu)更便捷(jie)地采購所有(you)Microchip器(qi)件(jian)及開發(fa)(fa)工具(ju)；而(er)“培訓(xun)”區(qu)(qu)則通過(guo)(guo)網上研討(tao)會、報(bao)名參加(jia)本地研討(tao)會和動(dong)手實驗(yan)課程(cheng)，以及每年在全(quan)球各地舉行的(de)Microchip技術精英(ying)年會的(de)信(xin)息等多種(zhong)途徑為客戶(hu)(hu)提供(gong)(gong)培訓(xun)。