APFC非隔離AC-DC

MT7864是一款高功率因數(shù)降壓型LED驅(qū)動(dòng)芯片。工作在準(zhǔn)諧振模式（QRM），大大降低了電流和電壓的應(yīng)力，同時(shí)使效率和抗電磁干擾的性能都得到提升。利用美芯晟特有的準(zhǔn)全周期檢測(cè)專利技術(shù)對(duì)LED輸出電流進(jìn)行檢測(cè)，確保了LED輸出電流的精度。\n\nMT7864通過解碼PWM信號(hào)實(shí)現(xiàn)調(diào)節(jié)LED電流，從而實(shí)現(xiàn)智能調(diào)光。通過內(nèi)部微調(diào)解碼器實(shí)現(xiàn)LED電流的高精度和一致性。尤其在調(diào)光等級(jí)較低時(shí)，PWM控制方法從準(zhǔn)諧振模式無縫地轉(zhuǎn)入脈沖頻率調(diào)制模式（PFM），從而保證了較小的輸出電流和低開關(guān)損耗。另外，MT7864同時(shí)實(shí)現(xiàn)了各種保護(hù)功能，包括LED開路保護(hù)（OVP）、逐周期過流保護(hù)(OCP)、LED短路保護(hù)( ? 內(nèi)置600V高壓MOSFET\n? 單級(jí)有源功率因數(shù)校正 (PFC > 0.90)\n? LED 電流精度高 (±3%)\n? 優(yōu)異的線性調(diào)整度和負(fù)載調(diào)整度(±2%)\n? 準(zhǔn)諧振工作模式 (QRM)\n? 多重保護(hù)機(jī)制\n? PWM 調(diào)光(100:1)\n? 封裝: SOP8;

Maxic

美芯晟

PWM Dimmable APFC BUCK LED Driver

文件：185.3 Kbytes 頁數(shù)：1 Pages

MAXIC

美芯晟

10-BIT, 40 MSPS A/D CONVERTER

GENERAL DESCRIPTION The SPT7864 is a 10-bit, 40 MSPS analog-to-digital converter with low power dissipation at only 395 mW typical at 40 MSPS with a power supply of +5.0 V.The digital outputs are +3 V or +5 V, and are user selectable. The SPT7864 has incorporated proprietary circuit design and CM

文件：148.98 Kbytes 頁數(shù)：8 Pages

CADEKA

10-BIT, 40 MSPS A/D CONVERTER

GENERAL DESCRIPTION The SPT7864 is a 10-bit, 40 MSPS analog-to-digital converter with low power dissipation at only 395 mW typical at 40 MSPS with a power supply of +5.0 V.The digital outputs are +3 V or +5 V, and are user selectable. The SPT7864 has incorporated proprietary circuit design and CM

文件：148.98 Kbytes 頁數(shù)：8 Pages

CADEKA