18V, 5A, 650kHz, ACOT? 同步 Buck 轉(zhuǎn)換器

RT7240A是一款A(yù)COT(Advanced Constant On-Time)操作模式的同步降壓型DC/DC轉(zhuǎn)換器，輸入電壓4.5V至18V范圍內(nèi)，最大電流輸出為5A。系統(tǒng)操作于ACOT模式下可在廣負(fù)載變動(dòng)范圍內(nèi)提供良好的瞬時(shí)響應(yīng)，并于輸出電容的選擇上可選用具較小ESR的陶瓷電容，并確保整體系統(tǒng)表現(xiàn)的穩(wěn)定性。此外，RT7240A在輸入與負(fù)載變動(dòng)情形下仍能提供良好的恒定操作頻率表現(xiàn)，內(nèi)建的整流開關(guān)可允許在輸出在全負(fù)載變動(dòng)范圍內(nèi)提供良好的轉(zhuǎn)換效率。藉由偵測(cè)同步整流開關(guān)的端電壓可達(dá)到逐周期形式的限流機(jī)制，并可藉由外部的電容設(shè)計(jì)達(dá)到緩啟動(dòng)效果，消除啟動(dòng)時(shí)產(chǎn)生過大的輸入電涌。 ? 具ACOT? 操作模式提供快速的瞬時(shí)響應(yīng)\n? 5A 輸出電流\n? 進(jìn)階的恒定導(dǎo)通時(shí)間控制\n? 效率可達(dá)95%\n? 可調(diào)輸出電壓范圍0.765V至8V\n? 逐周期電流限制\n? 過熱保護(hù)\n;

Richtek

立锜科技

MPEG-2 Transport RISC processor

GENERAL DESCRIPTION The SAA7240 is a transport MPEG-2 source decoder designed for application in set-top boxes in a Digital Video Broadcast (DVB) environment. It is targeted to BSkyB 3.00 and Canal+ basic box and web box applications. The device is part of a comprehensive source decoding kit that

文件：127.52 Kbytes 頁(yè)數(shù)：32 Pages

PHI

PHI

MPEG-2 Transport RISC processor

GENERAL DESCRIPTION The SAA7240 is a transport MPEG-2 source decoder designed for application in set-top boxes in a Digital Video Broadcast (DVB) environment. It is targeted to BSkyB 3.00 and Canal+ basic box and web box applications. The device is part of a comprehensive source decoding kit that

文件：127.52 Kbytes 頁(yè)數(shù)：32 Pages

PHI

PHI

SECONDARY CHOPPER REGULATOR FOR VTR

SECONDARY CHOPPER REGULATOR FOR VTR

文件：119.96 Kbytes 頁(yè)數(shù)：2 Pages

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