APFC非隔离AC-DC

MT7864是一款高功率因数降压型LED驱动芯片。工作在准谐振模式（QRM），大大降低了电流和电压的应力，同时使效率和抗电磁干扰的性能都得到提升。利用美芯晟特有的准全周期检测专利技术对LED输出电流进行检测，确保了LED输出电流的精度。\n\nMT7864通过解码PWM信号实现调节LED电流，从而实现智能调光。通过内部微调解码器实现LED电流的高精度和一致性。尤其在调光等级较低时，PWM控制方法从准谐振模式无缝地转入脉冲频率调制模式（PFM），从而保证了较小的输出电流和低开关损耗。另外，MT7864同时实现了各种保护功能，包括LED开路保护（OVP）、逐周期过流保护(OCP)、LED短路保护( • 内置600V高压MOSFET\n• 单级有源功率因数校正 (PFC > 0.90)\n• LED 电流精度高 (±3%)\n• 优异的线性调整度和负载调整度(±2%)\n• 准谐振工作模式 (QRM)\n• 多重保护机制\n• PWM 调光(100:1)\n• 封装: SOP8;

PWM Dimmable APFC BUCK LED Driver

文件：185.3 Kbytes Page：1 Pages

4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC

GENERAL DESCRIPTION The AD7864 is a high speed, low power, 4-channel simultaneous sampling 12-bit A/D converter that operates from a single +5␣ V supply. The part contains a 1.65 µs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on-chip clock oscillator, signal conditi

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

500kHz, 12-Bit, 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER

文件：183.56 Kbytes Page：16 Pages

500kHz, 12-Bit, 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER

文件：183.56 Kbytes Page：16 Pages

500kHz, 12-Bit, 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER

文件：183.56 Kbytes Page：16 Pages