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LM4671ITL PDF预览

LM4671ITL

更新时间: 2024-11-16 02:54:35
品牌 Logo 应用领域
美国国家半导体 - NSC 开关商用集成电路音频放大器
页数 文件大小 规格书
20页 592K
描述
Filterless High Efficiency 2.5W Switching Audio Amplifier

LM4671ITL 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:MICRO, SMD-9Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.1标称带宽:20 kHz
商用集成电路类型:AUDIO AMPLIFIER增益:6.0206 dB
谐波失真:10%JESD-30 代码:S-PBGA-B9
JESD-609代码:e0长度:1.514 mm
湿度敏感等级:1信道数量:1
功能数量:1端子数量:9
最高工作温度:85 °C最低工作温度:-40 °C
标称输出功率:2.5 W封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装等效代码:BGA9,3X3,20
封装形状:SQUARE封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:2.5/5 V
认证状态:Not Qualified座面最大高度:0.6 mm
子类别:Audio/Video Amplifiers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 (Sn63Pb37)
端子形式:BALL端子节距:0.5 mm
端子位置:BOTTOM处于峰值回流温度下的最长时间:40
宽度:1.514 mmBase Number Matches:1

LM4671ITL 数据手册

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December 18, 2007  
LM4671ꢀ  
Filterless High Efficiency 2.5W Switching Audio Amplifier  
General Description  
Key Specifications  
The LM4671 is a single supply, high efficiency 2.5W switching  
audio amplifier. A low noise, filterless PWM architecture elim-  
inates the output filter, reducing external component count,  
board area consumption, system cost, and simplifying design.  
■ꢀEfficiency @ 3.6V, 100mW into  
ꢁꢁ8Ω speaker  
80% (typ)  
88% (typ)  
■ꢀEfficiency @ 3.6V, 400mW into  
ꢁꢁ 8Ω speaker  
The LM4671 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 @ 5V, 1W into 8Ω  
speaker  
86% (typ)  
■ꢀQuiescent current, 3.6V supply  
2.8mA (typ)  
■ꢀTotal shutdown power supply  
0.01µA (typ)  
2.4V to 5.5V  
The LM4671 has high efficiency with speaker loads compared  
to a typical Class AB amplifier. With a 3V supply driving an  
8speaker, the IC's efficiency for a 100mW power level is  
80%, reaching 88% at 400mW output power.  
current  
■ꢀSingle supply range  
Features  
The LM4671 features a low-power consumption shutdown  
mode. Shutdown may be enabled by driving the Shutdown  
pin to a logic low (GND).  
No output filter required for inductive loads  
Externally configurable gain  
The gain of the LM4671 is externally configurable which al-  
lows independent gain control from multiple sources by sum-  
ming the signals.  
Very fast turn on time: 17μs (typ)  
Minimum external components  
"Click and pop" suppression circuitry  
Micro-power shutdown mode  
Available in space-saving microSMD package  
Applications  
Mobile phones  
PDAs  
Portable electronic devices  
Typical Application  
201073j3  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
201073  
www.national.com  

LM4671ITL 替代型号

型号 品牌 替代类型 描述 数据表
TPA2010D1YZF TI

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