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TPS6280x模(mo)塊是(shi)種具備降壓(ya)(ya)轉(zhuan)換器(qi)的(de)(de)(de)降壓(ya)(ya)轉(zhuan)換器(qi)2.3μA常見的(de)(de)(de)靜(jing)態電(dian)(dian)(dian)(dian)(dian)流，工作效(xiao)率(lv)最(zui)高(gao)，解決方案(an)尺寸(cun)最(zui)小(xiao)。TI的(de)(de)(de)DCS-Control拓撲(pu)，TPS6280x可(ke)(ke)(ke)選(xuan)用(yong)(yong)(yong)微電(dian)(dian)(dian)(dian)(dian)感器(qi)和電(dian)(dian)(dian)(dian)(dian)容器(qi)運作，可(ke)(ke)(ke)高(gao)達4MHz開(kai)關(guan)頻率(lv)。TPS6280x為了(le)降低開(kai)關(guan)周(zhou)期，維持高(gao)效(xiao)率(lv)，將(jiang)無縫拼接進入(ru)(ru)省電(dian)(dian)(dian)(dian)(dian)模(mo)式。VSEL/MODE管腳接入(ru)(ru)到(dao)GND可(ke)(ke)(ke)選(xuan)用(yong)(yong)(yong)固定輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。只(zhi)需將(jiang)外(wai)部(bu)電(dian)(dian)(dian)(dian)(dian)阻接入(ru)(ru)到(dao)VSEL/MODE管腳可(ke)(ke)(ke)選(xuan)用(yong)(yong)(yong)16種內部(bu)設置(zhi)的(de)(de)(de)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。R2D轉(zhuan)換器(qi)可(ke)(ke)(ke)以(yi)讀取外(wai)部(bu)電(dian)(dian)(dian)(dian)(dian)阻并設置(zhi)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。只(zhi)需調整(zheng)單個電(dian)(dian)(dian)(dian)(dian)阻器(qi)，就可(ke)(ke)(ke)以(yi)在不同(tong)的(de)(de)(de)應用(yong)(yong)(yong)程序和電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)軌(gui)中(zhong)選(xuan)用(yong)(yong)(yong)相(xiang)同(tong)的(de)(de)(de)部(bu)件號。除此之外(wai)，與傳統的(de)(de)(de)外(wai)部(bu)電(dian)(dian)(dian)(dian)(dian)阻分壓(ya)(ya)器(qi)網(wang)絡相(xiang)比較，TPS6280x內部(bu)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)可(ke)(ke)(ke)以(yi)提供更高(gao)的(de)(de)(de)精確度。TPS6280x DC/DC轉換器啟動后將進入強制PWM模式(通(tong)過VSEL/MODE在管腳上增加高(gao)電(dian)平)。TPS6280x通(tong)常(chang)以4MHz或1.5MHz開關(guan)頻率運作(zuo)(zuo)，實現最低輸出電(dian)壓紋波和最高(gao)工作(zuo)(zuo)效率。TPS6280x設備(bei)系列選用0.35mm間距(ju)微型6管腳WCSP封裝。

特征參數

1?鍵入相電壓規模(mo)為1.8V至5.5V

?2.3μA管理動態感應(ying)電流

?可高達hg4MHz的開(kai)關按鈕頻繁(fan)

?0.6A/1A輸(shu)出精度(du)直(zhi)流電

?輸出電流電壓(ya)精確性(xing)度(du)為1%

?先選(xuan)手機省(sheng)電/強制性要求PWM方(fang)法

?R2D轉變成器，可保證方便的工作(zuo)輸出(chu)輸出(chu)功率測評

?16種可選擇的輸(shu)出(chu)工作電壓(ya)+1種特定(ding)工作輸(shu)出(chu)交流電壓(ya)

–TPS62800(4MHz)：0.4V至0.775V

–TPS62801(4MHz)：0.8V至(zhi)1.55V

–TPS62802(4MHz)：1.8V至3.3V

–TPS62806(1.5MHz)：0.4V至(zhi)0.775V

–TPS62807(1.5MHz)：0.8V至1.55V

–TPS62808(1.5MHz)：1.8V至(zhi)3.3V

?智慧化使能管腳

?路過調優的(de)管(guan)腳，可兼容0201零部件

?DCS-Control? 拓補

?的輸出電池充電

?以100%的占空(kong)比經營模式

?袖珍型6管腳0.35mm間隔WCSP二極管封裝

?兼容(rong)高(gao)寬比高(gao)出0.6mm的消除計(ji)劃(hua)

?兼容壓低5mm2的緩解策(ce)劃(hua)方(fang)案長(chang)度(du)

軟件應用

?可配帶電子機(ji)、物登(deng)錄網(wang)采用

?由2節AA干電(dian)(dian)池供電(dian)(dian)局APP

?中國手機終端機

原因TI的大大小欠料狀況(kuang)，眾多加盟商(shang)遭受超多價調(diao)貨的狀況(kuang)，或者于橋梁易貨供應商(shang)價錢超過了50倍普通 行(xing)情分析。

而老牌電(dian)源模塊(kuai)手工專業(ye)的(de)臺(tai)達(da)旗(qi)下的(de)Cyntec商品(pin)，早(zao)已經(jing)退出uPOL 開(kai)關電(dian)源控制器的(de)產(chan)品(pin)原位代換，無(wu)暇避免，不少(shao)現貨交易批發商。 

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