非隔离AC-DC

MT7741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85Vac~265Vac的非隔离降压型的LED电源系统。 MT7741采用自主设计的高压片内供电技术实现了无VCC电容以及启动电阻，内置续流二极管, 且芯片内置高压功率MOS管，外围电路简单，系统成本低。 临界导通模式确保了MT7741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，确保了系统的高效率。电感电流谷值为零的临界导通模式结合经过输入母线电压补偿后的峰值电感电流，确保了输出LED电流的高精度，并且具有良好的线性调 无VCC电容、无启动电阻\n内置续流二极管\n宽输入电压范围\n峰值效率高达95%\n高精度LED恒流电流\n集成高压供电功能\n逐周期峰值电流控制\nLED短路保护\n前沿消隐控制\n欠压锁定保护(UVLO)\n过温自动调节\nSOP4封装;

Maxic

美芯晟

12-Bit Sampling A/D Converters

DESCRIPTION… The SP574B/674B/1674B/774B (SPx74B) Series are complete 12–bit successive–approximation A/D converters integrated on a single die with tri-state output latches, an internal reference, clock and a sample–hold. The new “B–Series” features true Nyquist sampling while maintaining compati

文件：172.25 Kbytes 页数：15 Pages

SIPEX

12-Bit Sampling A/D Converters

DESCRIPTION… The SP574B/674B/1674B/774B (SPx74B) Series are complete 12–bit successive–approximation A/D converters integrated on a single die with tri-state output latches, an internal reference, clock and a sample–hold. The new “B–Series” features true Nyquist sampling while maintaining compati

文件：172.25 Kbytes 页数：15 Pages

SIPEX

12-Bit Sampling A/D Converters

DESCRIPTION… The SP574B/674B/1674B/774B (SPx74B) Series are complete 12–bit successive–approximation A/D converters integrated on a single die with tri-state output latches, an internal reference, clock and a sample–hold. The new “B–Series” features true Nyquist sampling while maintaining compati

文件：172.25 Kbytes 页数：15 Pages

SIPEX