LED驱动-隔离驱动+PFC

 M8912是一款隔离式、单级有源功率因数校正的高精度原边反馈LED恒流控制芯片，适用于范围（85-264V）输入的反激式隔离LED恒流电源。\nM8912集成有源功率因数校正电路，具有很高的功率因数和较低的总谐波失真。工作在电感电流临界连续模式，功率MOS管处于零电流开通状态，减小开关损\n耗。M8912工作于原边反馈模式，无需次级反馈电路，即可实现高精度输出恒流控制。 • 内置单级有源功率因数校正，PF>0.9 \n原边反馈，无需光耦，TL431等器件\n高性能的线电压调整率和负载调整率\n±3%输出电流精度\n内置650V功率MOSFET\n启动电流(10uA)\nINV反馈电阻值高，功耗低\n多重保护功能\n^LED开路/短路保护\n^电流采样电阻开路保护\n^逐周期原边电流限流\n^芯片供电过压/欠压保护\n^自动重启功能\n^过热调节功能\n封装：SOP-8/DIP-8;

Mojay

茂捷半导体

SMT POWER INDUCTORS

文件：131.32 Kbytes 页数：2 Pages

pulse

Ultra Low Power DAC with Headphone Driver

DESCRIPTION The WM8912 is a high performance ultra-low power stereo DAC optimised for portable audio applications. The device features stereo ground-referenced headphone amplifiers using the Wolfson ‘Class-W’ amplifier techniques - incorporating an innovative dual-mode charge pump architecture -

文件：1.28529 Mbytes 页数：129 Pages

CIRRUS

凌云逻辑

Ultra Low Power DAC with Headphone Driver for Portable Audio Applications

DESCRIPTION The WM8912 is a high performance ultra-low power stereo DAC optimised for portable audio applications. The device features stereo ground-referenced headphone amplifiers using the Wolfson ‘Class-W’ amplifier techniques - incorporating an innovative dual-mode charge pump architecture -

文件：1.25916 Mbytes 页数：128 Pages

WolfsonWolfson Microelectronics plc

欧胜欧胜微电子股份有限公司