概述:
SC1333是一款工作于2.7V到(dao)6.5V的PFM升壓(ya)(ya)型三(san)節(jie)鋰電(dian)池(chi)充電(dian)控制集(ji)(ji)成電(dian)路(lu)。SC1333采(cai) 用恒(heng)流和準恒(heng)壓(ya)(ya)模式對電(dian)池(chi)進行充電(dian)管(guan)理，內部(bu)集(ji)(ji)成有(you)基(ji)準電(dian)壓(ya)(ya)源，電(dian)感電(dian)流檢測單元(yuan)，電(dian)池(chi)電(dian)壓(ya)(ya)檢測電(dian)路(lu)和片外(wai)(wai)場效應晶體管(guan)驅動(dong)電(dian)路(lu)等(deng)，具有(you)外(wai)(wai)部(bu)元(yuan)件少，電(dian)路(lu)簡(jian)單等(deng)優(you)點。
當(dang)(dang)接通(tong)輸入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源后(hou)，SC1333進入充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態(tai)，控(kong)制片(pian)(pian)外(wai)(wai)N溝道MOSFET導通(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流上(shang)升，當(dang)(dang)上(shang)升到(dao)外(wai)(wai)部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流檢測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻設置(zhi)(zhi)的(de)上(shang)限時(shi)(shi)，片(pian)(pian)外(wai)(wai)N溝道MOSFET截(jie)止，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流下(xia)(xia)降(jiang)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)中的(de)能量轉:移到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池中。當(dang)(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流下(xia)(xia)降(jiang)到(dao)外(wai)(wai)部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流檢測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻設置(zhi)(zhi)的(de)下(xia)(xia)限時(shi)(shi)，片(pian)(pian)外(wai)(wai)N溝道MOSFET再(zai)次(ci)導通(tong)，如此循環。當(dang)(dang)BAT管(guan)腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓第一次(ci)達(da)到(dao)內部設置(zhi)(zhi)的(de)12.6V(典型(xing)值(zhi))時(shi)(shi)，SC1333進入準(zhun)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)模式，以(yi)較小電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。只有當(dang)(dang)BAT管(guan)腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓第二次(ci)達(da)到(dao)12.6V時(shi)(shi)，充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)過程才結束，片(pian)(pian)外(wai)(wai)N溝道MOSFET保(bao)持截(jie)止狀(zhuang)(zhuang)態(tai)。當(dang)(dang)BAT管(guan) 腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓下(xia)(xia)降(jiang)到(dao)再(zai)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)閾值(zhi)時(shi)(shi)，SC1333再(zai)次(ci)進入充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態(tai)。SC1333最高(gao)工作頻率可達(da)1MHz,工作溫度范圍(wei)從-40C到(dao)+ 85C。
當電(dian)池(chi)電(dian)壓低于(yu)輸入電(dian)壓或電(dian)池(chi)短(duan)路時，SC1333在(zai)片外N溝(gou)道MOSFET和(he)P溝(gou)道MOSFET的共同作(zuo)用(yong)下，用(yong)較小電(dian)流繼續對電(dian)池(chi)充電(dian)，對電(dian)池(chi)起到保護作(zuo)用(yong)。
其他功(gong)能(neng)包括芯(xin)片使能(neng)輸(shu)入，狀態指示輸(shu)出(chu)端等。
SC1333采用SOP8封裝。
高達(da)35W輸 出功率
當電池(chi)(chi)電壓低于輸入(ru)電壓或(huo)者電池(chi)(chi)短(duan)路時，以較小電流充電。
輸入電源的自適應功(gong)能
芯片使能輸入端(duan)
電池(chi)端過壓保護
狀態指示(shi)輸出
工作溫(wen)度范圍: - - 40°C -85C
SOP8封裝(zhuang)
產品無鉛， 滿足Rohs指 令要求(qiu)，不含(han)鹵素
應用：
二節和三(san)節鋰電池充電管理
按摩機(ji)，筋膜(mo)槍
便攜，拉桿及(ji)藍牙音響
充電器
游戲機等(deng)
特點(dian)：
輸入電壓范圍: 2.7V -6.5V
工作(zuo)電流: 280uA@VIN=5V
電(dian)感電(dian)流檢測(ce)
高(gao)達1MHz開關(guan)頻率
準恒壓充電模式(shi)補償電池內阻和(he)電池連接線(xian)
電阻(zu)產生的電壓損失
自動再充電功能
下一篇：SC1322
