高效率降压型 LED 恒流驱动芯片

MT773XH是一款工作于临界导通模式（CRM，Critical Conduction Mode）的高精度LED恒流驱动芯片，主要应用于非隔离降压型LED电源系统。\n\nMT773XH适用于85Vac~265Vac宽电压输入范围应用，芯片内置500V高压功率MOS管，采用创新的高压片内供电方案，无需VCC电容及启动电阻，外围电路简单，系统成本低。\n\nMT773XH具有高精度的快速电流采样电路，支持高频应用且具有优异的线性调整率。工作在临界导通模式，输出电流不随电感变化，使芯片具有良好的负载调整率。\n\nMT773XH同时实现了各种保护功能，包括LED短路保护和过温自动调节等，以确保系统 • 无VCC电容及启动电阻\n• 支持高频开关应用，可使用贴片电感\n• 临界导通模式，对电感不敏感\n• 低母线电压下不闪灯\n• 输出电流精度：±5%\n• LED短路保护\n• 欠压锁定保护（UVLO）\n• 过温自动调节\n• SOP4封装;

Maxic

美芯晟

8-BIT, 40 MSPS,175 mW A/D CONVERTER

GENERAL DESCRIPTION The SPT7734 is a 8-bit monolithic, low cost, ultralow power analog-to-digital converter capable of minimum word rates of 40 MSPS. The on-chip track-and-hold function assures very good dynamic performance without the need for external components. The input drive requirements ar

文件：86.81 Kbytes 页数：9 Pages

Fairchild

仙童半导体

8-BIT, 40 MSPS,175 mW A/D CONVERTER

GENERAL DESCRIPTION The SPT7734 is a 8-bit monolithic, low cost, ultralow power analog-to-digital converter capable of minimum word rates of 40 MSPS. The on-chip track-and-hold function assures very good dynamic performance without the need for external components. The input drive requirements ar

文件：191.78 Kbytes 页数：9 Pages

CADEKA

8-BIT, 40 MSPS,175 mW A/D CONVERTER

GENERAL DESCRIPTION The SPT7734 is a 8-bit monolithic, low cost, ultralow power analog-to-digital converter capable of minimum word rates of 40 MSPS. The on-chip track-and-hold function assures very good dynamic performance without the need for external components. The input drive requirements ar

文件：191.78 Kbytes 页数：9 Pages

CADEKA