可控硅调光

MT7893是一款工作于零电流导通，峰值电流关断的临界导通模式（CRM，Critical Conduction Mode）高精度LED恒流控制芯片，主要应用于BUCK，Fly-back LED电源系统。MT7893支持高功率因数的应用，PF可达到0.8以上。\n临界导通模式确保了MT7893可以控制功率开关在电感电流为零时刻开启，减小了功率管的开关损耗。电感电流临界导通控制模式结合母线电压补偿，确保了输出LED电流的高精度，并且具有良好的线性调整率和负载调整率。对电感量变化不敏感，可以使用工字电感。\nMT7893芯片内置300V高压功率MOS管,外围电路简单，系统成本低。\nMT7893同时 • 兼容可控硅调光\n• 支持高PF应用，PF达到0.8以上\n• 宽范围的调光兼容性\n• 调光深度可低于1%\n• 调光曲线符合NEMA SSL6标准\n• 内置300V功率MOS管\n• 高精度LED恒流电流\n• 逐周期峰值电流控制\n• LED短路保护\n• LED可调开路保护\n• 欠压锁定保护(UVLO)\n• 过热自动调节\n• SOP7封装;

TRIAC Dimmable Constant Current LED Driver

文件：141.14 Kbytes Page：1 Pages

LC2MOS 12-Bit, Serial 6 us ADC in 8-Pin Package

GENERAL DESCRIPTION The AD7893 is a fast, 12-bit ADC that operates from a single +5 V supply and is housed in a small 8-pin mini-DIP and 8-pin SOIC. The part contains a 6 µs successive approximation A/D converter, an on-chip track/hold amplifier, an on-chip clock and a high speed serial interface

UV-VIS FIBER LIGHT SOURCE

OVERVIEW This light source L7893 incorporates a highly stable Deuterium lamp and a Tungsten lamp into a single compact housing with an optical fiber light guide. The combination of these two lamps covers a wide spectral range from 200 nm to 1100 nm, yet offers highly stable light output and lon

THREE TERMINAL POSITIVE VOLTAGE REGULATORS

SEMICONDUCTOR SELECTION GUIDE Microcomputer IC Memory Semi-Custom IC Particular Purpose IC General Purpose Linear IC Transistor / Diode / Thyristor Microwave Device / Consumer Use High Frequency Device Optical Device Packages Index (Quick Reference by Type N

Super audio media player

文件：1.036849 Mbytes Page：66 Pages

Super audio media player

文件：1.036849 Mbytes Page：66 Pages