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LM4673SDX PDF预览

LM4673SDX

更新时间: 2024-11-23 20:53:35
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器商用集成电路
页数 文件大小 规格书
24页 9089K
描述
IC 2.65 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8, LLP-8, Audio/Video Amplifier

LM4673SDX 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:LLP-8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.42标称带宽:20 kHz
商用集成电路类型:AUDIO AMPLIFIER谐波失真:10%
JESD-30 代码:S-XDSO-N8JESD-609代码:e0
长度:3 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C标称输出功率:2.65 W
封装主体材料:UNSPECIFIED封装代码:HVSON
封装等效代码:SOLCC8,.11,20封装形状:SQUARE
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:2.4/5.5 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:3.75 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 (Sn/Pb)
端子形式:NO LEAD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:40
宽度:3 mmBase Number Matches:1

LM4673SDX 数据手册

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November 1, 2007  
LM4673ꢀ  
Filterless, 2.65W, Mono, Class D Audio Power Amplifier  
General Description  
Key Specifications  
The LM4673 is a single supply, high efficiency, 2.65W, mono,  
Class D audio amplifier. A low noise, filterless PWM architec-  
ture eliminates the output filter, reducing external component  
count, board area consumption, system cost, and simplifying  
design.  
■ꢀ  
Efficiency at 3.6V, 400mW into 8speaker  
88% (typ)  
80% (typ)  
■ꢀ  
Efficiency at 3.6V, 100mW into 8speaker  
The LM4673 is designed to meet the demands of mobile  
phones and other portable communication devices. Operat-  
ing on a single 5V supply, it is capable of driving a 4speaker  
load at a continuous average output of 2.1W with less than  
1% THD+N. Its flexible power supply requirements allow op-  
eration from 2.4V to 5.5V.  
■ꢀ  
Efficiency at 5V, 1W into 8speaker  
86% (typ)  
■ꢀQuiescent current, 3.6V supply  
2.1mA (typ)  
■ꢀ  
0.01µA (typ)  
Total shutdown power supply current  
The LM4673 has high efficiency with speaker loads compared  
to a typical Class AB amplifier. With a 3.6V supply driving an  
8speaker, the IC's efficiency for a 100mW power level is  
80%, reaching 88% at 400mW output power.  
2.4V to 5.5V  
78dB  
■ꢀSingle supply range  
■ꢀPSRR, f = 217Hz  
The LM4673 features a low-power consumption shutdown  
mode. Shutdown may be enabled by driving the Shutdown  
pin to a logic low (GND).  
Features  
Mono Class D Operation  
No output filter required for inductive loads  
The gain of the LM4673 is externally configurable which al-  
lows independent gain control from multiple sources by sum-  
ming the signals. Output short circuit and thermal overload  
protection prevent the device from damage during fault con-  
ditions.  
Externally configurable gain  
Very fast turn on time: 17μs (typ)  
Minimum external components  
"Click and pop" suppression circuitry  
Micro-power shutdown mode  
Available in space-saving 0.4mm pitch micro SMD and  
LLPTm packages  
Applications  
Mobile phones  
PDAs  
Portable electronic devices  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
201522  
www.national.com  

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