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LM48410SQ

更新时间： 2024-11-07 04:20:07
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
页数 文件大小 规格书
20页 734K
描述
Low EMI, Filterless, 2.3W Stereo Class D Audio Power Amplifier with National 3D Enhancement

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LM48410SQ 技术参数

是否Rohs认证：不符合生命周期：Transferred
包装说明：4 X 4 MM, 0.80 MM HEIGHT, LLP-24Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.17Is Samacsys：N
标称带宽：22 kHz商用集成电路类型：AUDIO AMPLIFIER
谐波失真：10%JESD-30 代码：S-XQCC-N24
JESD-609代码：e0长度：4 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：2.3 W封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC24,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
电源：3.6 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Audio/Video Amplifiers
最大压摆率：8.5 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端子面层：Tin/Lead (Sn85Pb15)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD宽度：4 mm
Base Number Matches：1

LM48410SQ 数据手册

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July 2007  
LM48410ꢀ  
Low EMI, Filterless, 2.3W Stereo Class D Audio Power  
Amplifier with National 3D Enhancement  
General Description  
Key Specifications  
The LM48410 is a single supply, high efficiency, 2.3W/chan-  
nel, filterless switching audio amplifier. A low noise PWM  
architecture eliminates the output filter, reducing external  
component count, board area consumption, system cost, and  
simplifying design. A selectable spread spectrum modulation  
scheme suppresses RF emissions, further reducing the need  
for output filters.  
■ꢀQuiescent Power Supply Current  
at 3.6V supply  
4mA  
■ꢀPower Output at VDD = 5V,  
RL = 4Ω, THD ≤ 10%  
2.3W (typ)  
■ꢀPower Output at VDD = 5V,  
RL = 8Ω, THD ≤ 10%  
1.5W (typ)  
The LM48410 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  
2.3W/channel of continuous output power to a 4Ω load with  
less than 10% THD+N. Flexible power supply requirements  
allow operation from 2.4V to 5.5V. The LM48410 offers two  
logic selectable modulation schemes, fixed frequency mode,  
and an EMI reducing spread spectrum mode.  
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 LM48410 features high efficiency compared with con- Features  
ventional Class AB amplifiers. When driving an 8Ω speaker  
Selectable spread spectrum mode reduces EMI  
■
■
■
■
■
■
■
■
■
■
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from a 3.6V supply, the device operates with 85% efficiency  
at PO = 500mW/Ch. Four gain options are pin selectable  
through the G0 and G1 pins. The LM48410 also includes  
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 special-  
ization, widening the perceived soundstage.  
Output Short Circuit Protection  
Stereo Class D operation  
No output filter required  
National 3D Enhancement  
Logic selectable gain  
Independent channel shutdown controls  
Minimum external components  
Click and Pop suppression  
Micro-power shutdown  
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. Independent left/right shutdown controls  
maximizes power savings in mixed mono/stereo applications.  
Available in space-saving 4mm x 4mm LLP package  
Applications  
Mobile phones  
■
■
■
PDAs  
Laptops  
EMI Plot  
300106a0  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
300106  
www.national.com  
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