EUA2069-无破音、最大输出瓦数可调、高效率、2W单声道D类音频放大器 DataSheet  

概述
EUA2069为单声道、无破音、最大输出瓦数可调、高效率的2W D类音频功率放大器，其低噪声的PWM架构消除了输出端滤波器的需求，在减少外围器件数量的同时简化了设计。
EUA2069具有独特的无破音功能，可以通过检测输出的破音失真，自动调整系统增益；此外，通过采用全新的电荷泵结构，可以在手机的整个工作电压（3.3V-4.3V）内，输出功率保持恒定。EUA2069有0.8W、1W、1.2W三个功率等级，推荐使用额定功率在0.7W及以上的喇叭。EUA2069的最高效率可达82%，大大延长了智能机的使用时间。
EUA2069提供过流保护、过热保护和输出短路保护、EMI噪声和pop噪声抑制功能。EUA2069采用纤小的16焊球1.8mm×1.82mm WCSP封装。

特点
‧工作电压：3V到5V
‧独特的无破音功能，最大输出瓦数可调
‧短路保护及短路结束自动恢复功能
‧低的静态电流及关断电流
‧优化的PWM架构减少了输出端LC滤波器的需求
‧全差分的结构抑制了传导噪声并减少了对旁路电容的需求
‧过流保护
‧过温保护
‧错误输出DC保护
‧负载8Ω，工作电压4.2V，THD+N<10%，单一通道输出功率可达2W
‧1.8mm×1.82mm 16-pin WCSP封装
‧符合RoHS规范及Pb-Free，Halogen-Free

应用
‧行动电话
‧便携媒体播放器

EUA2069-2W High Efficiency Mono Class-D Audio Power Amplifier with Non-Clip 

Description
The EUA2069 is a high efficiency, low noise, class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplifying design.
The power amplifier, having power limit interlock non-clip function, controls gain automatically and prevents output signals from being clipped at the supply voltage. Moreover, EUA2069 permits an accurate output in the entire supply voltage range of battery (3.3V to 4.3V) with the new architecture of charge pump. EUA2069 has three output power modes: 0.8W, 1W and 1.2W, speakers with rated power of 0.7W or higher is recommended. And with the efficiency up to 82%, EUA2069 increases the working time of the smart phone greatly.
Furthermore, EUA2069 also integrates over current and over temperature protection functions, DC output protection function and EMI noise and the pop noise reduction functions.
The EUA2069 is available in space-saving 1.8mm×1.82 mm WCSP-16 packages.

Feature
‧Unique Modulation Scheme Reduces EMI Emissions
‧Unique Non-Clip Function, Variable NCPA, NCPB, NCPC, NCPOFF mode
‧Short Circuit Auto-Recovery
‧Low Quiescent Current and Shutdown Current
‧Optimized PWM Output Stage Eliminates LC Output Filter
‧Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor
‧Overcurrent Protection Function (OCP)
‧Overtemperature Protection Function (OTP)
‧DC Output Protection Function (DCOP)
‧Power Limit Function
‧2W 8-Ω Load at VDD =4.2V, THD+N <10%
‧1.8mm×1.82mm WCSP-16 Package
‧RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free

Application
‧Smart Phones/Cellular Phones
‧Portable Multimedia Players