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LM4674ATLX/NOPB PDF预览

LM4674ATLX/NOPB

更新时间: 2024-11-16 13:09:23
品牌 Logo 应用领域
美国国家半导体 - NSC 放大器功率放大器
页数 文件大小 规格书
18页 842K
描述
IC 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA16, 2 X 2 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, BGA-16, Audio/Video Amplifier

LM4674ATLX/NOPB 技术参数

是否Rohs认证:符合生命周期:Transferred
包装说明:VFBGA, BGA16,4X4,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.4Is Samacsys:N
标称带宽:22 kHz商用集成电路类型:AUDIO AMPLIFIER
增益:24 dB谐波失真:10%
JESD-30 代码:S-PBGA-B16JESD-609代码:e1
长度:2 mm湿度敏感等级:1
信道数量:2功能数量:1
端子数量:16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:BGA16,4X4,20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
最大压摆率:7.5 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/Silver/Copper (Sn/Ag/Cu)
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:2 mmBase Number Matches:1

LM4674ATLX/NOPB 数据手册

 浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第2页浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第3页浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第4页浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第5页浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第6页浏览型号LM4674ATLX/NOPB的Datasheet PDF文件第7页 
December 2005  
LM4674  
Filterless 2.5W Stereo Class D Audio Power Amplifier  
General Description  
Key Specifications  
The LM4674 is a single supply, high efficiency, 2.5W/  
channel, filterless switching audio amplifier. A low noise  
PWM architecture eliminates the output filter, reducing ex-  
ternal component count, board area consumption, system  
cost, and simplifying design.  
j
Efficiency at 3.6V, 100mW into 8  
80% (typ)  
85% (typ)  
85% (typ)  
j
Efficiency at 3.6V, 500mW into 8Ω  
j
Efficiency at 5V, 1W into 8Ω  
j
j
j
j
Quiescent Power Supply Current  
at 3.6V supply  
The LM4674 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 deliv-  
ering 2.5W/channel of continuous output power to a 4load  
with less than 10% THD+N. Flexible power supply require-  
ments allow operation from 2.4V to 5.5V.  
4mA  
Power Output at VDD = 5V,  
RL = 4, THD 10%  
Power Output at VDD = 5V,  
RL = 8, THD 10%  
Shutdown current  
2.5W (typ)  
1.5W (typ)  
0.1µA (typ)  
The LM4674 features high efficiency compared to conven-  
tional Class AB amplifiers. When driving and 8speaker  
from a 3.6V supply, the device features 85% efficiency at PO  
= 500mW. Four gain options are pin selectable through the  
GAIN0 and GAIN1 pins.  
Features  
n Output Short Circuit Protection  
n Stereo Class D operation  
n No output filter required  
n Logic selectable gain  
Output short circuit protection prevents the device from be-  
ing damaged during fault conditions. Superior click and pop  
suppression eliminates audible transients on power-up/down  
and during shutdown. Independent left/right shutdown con-  
trols maximizes power savings in mixed mono/stereo appli-  
cations.  
n Independent shutdown control  
n Minimum external components  
n Click and Pop suppression  
n Micro-power shutdown  
n Available in space-saving 2mm x 2mm x 0.6mm micro  
SMD package  
Applications  
n Mobile phones  
n PDAs  
n Laptops  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2005 National Semiconductor Corporation  
DS201674  
www.national.com  

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