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LM48413TLX

更新时间： 2024-11-09 05:42:23
品牌 Logo 应用领域
美国国家半导体 - NSC 消费电路商用集成电路音频放大器视频放大器功率放大器光电二极管
页数 文件大小 规格书
22页 378K
描述
Ultra Low EMI, Filterless, 1.2W Stereo Class D Audio Power Amplifier with E2S and National 3D Enhancement

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中文翻译

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LM48413TLX 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：VSSOP, BGA18,4X5,20/17Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.53Is Samacsys：N
标称带宽：22 kHz商用集成电路类型：VIDEO AMPLIFIER
谐波失真：1%JESD-30 代码：R-PDSO-G18
长度：2.25 mm湿度敏感等级：1
信道数量：2功能数量：1
端子数量：18最高工作温度：85 °C
最低工作温度：-40 °C标称输出功率：1.2 W
封装主体材料：PLASTIC/EPOXY封装代码：VSSOP
封装等效代码：BGA18,4X5,20/17封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：225
电源：3.6 V认证状态：Not Qualified
座面最大高度：0.675 mm子类别：Audio/Video Amplifiers
最大压摆率：7 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.4 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：2.047 mm
Base Number Matches：1

LM48413TLX 数据手册

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January 9, 2009  
LM48413ꢀ  
Ultra Low EMI, Filterless, 1.2W Stereo Class D Audio Power  
Amplifier with E2S and National 3D Enhancement  
General Description  
Key Specifications  
The LM48413 is a single supply, high efficiency, 1.2W/chan-  
nel, filterless switching audio amplifier. The LM48413 fea-  
tures National’s Enhanced Emissions Suppression (E2S)  
system - a unique patented ultra low EMI, spread spectrum,  
PWM architecture. It significantly reduces RF emission while  
preserving audio quality and efficiency. The E2S system im-  
proves battery life, reduces external component count, board  
area consumption, system cost and product design cycle  
time. The LM48413TL is available in a micro-SMD package,  
further saving space.  
■ꢀQuiescent Power Supply Current  
at 3.6V supply  
4mA (typ)  
1.2W (typ)  
■ꢀPower Output at VDD = 5V,  
RL = 8Ω, THD ≤ 1%  
0.03μA (typ)  
80% (typ)  
85% (typ)  
86% (typ)  
■ꢀShutdown current  
■ꢀEfficiency at 3.6V, 100mW into 8Ω  
■ꢀEfficiency at 3.6V, 500mW into 8Ω  
■ꢀEfficiency at 5V, 1W into 8Ω  
The LM48413 is designed to meet the demands of mobile  
phones and other portable communication devices. Operat-  
ing from a single 5V supply, the device is capable of delivering  
1.2W/channel of continuous output power to a 8Ω load with  
less than 1% THD+N. Flexible power supply requirements al-  
low operation from 2.4V to 5.5V. The wide band spread  
spectrum architecture of the LM48413 reduces EMI-radiated  
emissions due to the modulator frequency.  
Features  
E2S system reduces EMI preserving audio quality and  
efficiency  
■
Output Short Circuit Protection  
Stereo Class D operation  
No output filter required  
■
■
■
■
■
■
■
■
The LM48413 features high efficiency compared with con-  
ventional Class AB amplifiers. The E2S system includes an  
advanced, patent-pending edge rate control (ERC) architec-  
ture that further reduce emissions by minimizing the high  
frequency components of the device output, while maintain-  
ing its high quality audio reproduction and high efficiency (η  
= 85% at VDD = 3.6V, PO = 500mW). The LM48413 also in-  
cludes National’s 3D audio enhancement that improves  
stereo sound quality. In devices where the left and right  
speakers are in close proximity, 3D enhancement affects  
channel specialization, widening the perceived soundstage.  
National 3D Enhancement  
Minimum external components  
Click and Pop suppression  
Micro-power shutdown  
Available in space-saving approximately 2mm x 2.2mm  
micro SMD package  
Applications  
Mobile phones  
Output short circuit protection prevents the device from being  
damaged during fault conditions. Superior click and pop sup-  
pression eliminates audible transients on power up/down and  
during shutdown. Shutdown control also provided to maxi-  
mizes power savings.  
■
■
■
PDAs  
Laptops  
EMI Plot Using 6 inch Speaker Cables  
EMI Radiation vs Frequency  
VDD = 3V, RL = 15μH + 8Ω + 15μH  
30063536  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2009 National Semiconductor Corporation  
300635  
www.national.com  
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