概(gai)述
內(nei)(nei)置(zhi)異步自(zi)動(dong)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)模(mo)塊的(de)SC2307給(gei)(gei)音(yin)箱提(ti)(ti)(ti)(ti)供(gong)了(le)寬裕的(de)功(gong)率(lv)輸(shu)出(chu)，并且(qie)(qie)最(zui)大(da)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)值在(zai)給(gei)(gei)音(yin)箱提(ti)(ti)(ti)(ti)供(gong)了(le)寬裕的(de)功(gong)率(lv)輸(shu)出(chu)，并且(qie)(qie)最(zui)大(da)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)值在(zai)5.7V 、6.6V 、7.2V和(he)7.5V四(si)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值之(zhi)(zhi)間(jian)可(ke)(ke)選(xuan)。當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)較(jiao)小時(shi)，升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)不(bu)工作，四(si)個(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值之(zhi)(zhi)間(jian)可(ke)(ke)選(xuan)。當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)較(jiao)小時(shi)，升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)路(lu)(lu)(lu)不(bu)工作，D類(lei)直接(jie)由電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)；當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)變(bian)(bian)大(da)時(shi)，自(zi)動(dong)開(kai)啟升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)模(mo)塊升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)至(zhi)(zhi)中(zhong)(zhong)(zhong)間(jian)電(dian)(dian)(dian)(dian)(dian)(dian)平給(gei)(gei)類(lei)直接(jie)由電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)；當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)變(bian)(bian)大(da)時(shi)，自(zi)動(dong)開(kai)啟升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)模(mo)塊升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)至(zhi)(zhi)中(zhong)(zhong)(zhong)間(jian)電(dian)(dian)(dian)(dian)(dian)(dian)平給(gei)(gei)D類(lei)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)；當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)變(bian)(bian)得更(geng)大(da)時(shi)，升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)繼(ji)續(xu)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)至(zhi)(zhi)用戶(hu)設定(ding)最(zui)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)給(gei)(gei)類(lei)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)；當(dang)輸(shu)入(ru)(ru)信(xin)(xin)(xin)號(hao)變(bian)(bian)得更(geng)大(da)時(shi)，升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)繼(ji)續(xu)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)至(zhi)(zhi)用戶(hu)設定(ding)最(zui)大(da)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)給(gei)(gei)D類(lei)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，這樣可(ke)(ke)以提(ti)(ti)(ti)(ti)高(gao)系(xi)統工作效(xiao)(xiao)率(lv)，延(yan)長(chang)電(dian)(dian)(dian)(dian)(dian)(dian)池續(xu)航(hang)(hang)時(shi)間(jian)。類(lei)供(gong)電(dian)(dian)(dian)(dian)(dian)(dian)，這樣可(ke)(ke)以提(ti)(ti)(ti)(ti)高(gao)系(xi)統工作效(xiao)(xiao)率(lv)，延(yan)長(chang)電(dian)(dian)(dian)(dian)(dian)(dian)池續(xu)航(hang)(hang)時(shi)間(jian)。SC2307 具(ju)(ju)有(you)AGC防(fang)破(po)音(yin)功(gong)能(neng)，能(neng)顯(xian)著(zhu)提(ti)(ti)(ti)(ti)高(gao)音(yin)質(zhi)，創(chuang)造舒(shu)適(shi)的(de)聽音(yin)享(xiang)防(fang)破(po)音(yin)功(gong)能(neng)，能(neng)顯(xian)著(zhu)提(ti)(ti)(ti)(ti)高(gao)音(yin)質(zhi)，創(chuang)造舒(shu)適(shi)的(de)聽音(yin)享(xiang) 受 ，并 保(bao)(bao)護(hu)(hu)(hu)揚聲器免受過(guo)載損壞 。SC2307 具(ju)(ju) 備AB 類(lei)/D 類(lei)模(mo) 式切換 功(gong)能(neng)， 切換 至(zhi)(zhi)AB類(lei)可(ke)(ke)類(lei)可(ke)(ke) 減少 系(xi)統中(zhong)(zhong)(zhong)功(gong) 放FM 的(de) 干擾 。SC2307 的(de) 全差(cha)分架構(gou) 有(you)效(xiao)(xiao) 地 提(ti)(ti)(ti)(ti)高(gao)了(le) 芯片對(dui)RF 噪聲的(de) 抑(yi)制(zhi) 能(neng) 力 。 無(wu)需濾波(bo)器 的(de)PWM 調制(zhi)結構(gou)及內(nei)(nei)置(zhi)的(de)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)模(mo)塊內(nei)(nei)置(zhi)的(de)升(sheng)(sheng)(sheng)壓(ya)(ya)(ya)模(mo)塊, 盡 可(ke)(ke)能(neng)的(de) 減少 了(le) 外圍器件, 另外SC2307內(nei)(nei)置(zhi)了(le)內(nei)(nei)置(zhi)了(le) 過(guo)流保(bao)(bao)護(hu)(hu)(hu), 短 路(lu)(lu)(lu) 保(bao)(bao)護(hu)(hu)(hu) 和(he) 過(guo)熱保(bao)(bao)護(hu)(hu)(hu), 有(you)效(xiao)(xiao)的(de)保(bao)(bao)護(hu)(hu)(hu)芯片保(bao)(bao)護(hu)(hu)(hu)芯片 在(zai)異 常(chang) 的(de)工作 條件下 不(bu) 被損壞 。
特點(dian)
? 輸入(ru)電壓(ya) 范(fan)圍：3V~5.5V
? 內置自適 應(ying) 升壓(ya)電路, 將(jiang) 輸出電壓(ya)自動升壓(ya)至
5.7/6.6V/7.2/7.5V
?AGC 防破音功能
?D 類/AB 類 切換
? 無需濾波(bo)的 的 D 類(lei) PWM 輸出
? 輸出(chu)功率 P O （D 類@10% THD+N,
V BAT = 3.7V ）
R L =2Ω,10W(BOOST 升壓值為(wei) 為(wei) 7.5V)
R L =2Ω,8.5W(BOOST 升(sheng)壓值為 為 6.6V)
R L =4Ω,7.0W(BOOST 升(sheng)壓值為 為 7.5V)
R L =4Ω,5.6W(BOOST 升壓值為 為 6.6V)
? 過流(liu) 、 短 路、 欠(qian) 壓和(he) 過溫保護 功能
?Rohs 標準環(huan)保封裝(zhuang)：
帶散熱片的 的 SOP8-PP
