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LM4951A PDF预览

LM4951A

更新时间: 2024-02-20 01:38:20
品牌 Logo 应用领域
美国国家半导体 - NSC 音频放大器
页数 文件大小 规格书
20页 1824K
描述
Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection

LM4951A 技术参数

是否Rohs认证: 符合生命周期:Obsolete
包装说明:FBGA, BGA9,3X3,20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
Factory Lead Time:1 week风险等级:5.42
商用集成电路类型:AUDIO AMPLIFIERJESD-30 代码:S-PBGA-B9
JESD-609代码:e1湿度敏感等级: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
封装主体材料:PLASTIC/EPOXY封装代码:FBGA
封装等效代码:BGA9,3X3,20封装形状:SQUARE
封装形式:GRID ARRAY, FINE PITCH峰值回流温度(摄氏度):260
电源:3.3/7.5 V认证状态:Not Qualified
子类别:Audio/Video Amplifiers最大压摆率:4.5 mA
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:NOT SPECIFIEDBase Number Matches:1

LM4951A 数据手册

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September 5, 2008  
LM4951A  
Wide Voltage Range 1.8 Watt Audio Amplifier With Short  
Circuit Protection  
General Description  
Features  
The LM4951A is an audio power amplifier designed for ap-  
plications with supply voltages ranging from 2.7V up to 9V.  
The LM4951A is capable of delivering 1.8W continuous av-  
erage power with less than 1% THD+N into a bridge connect-  
ed 8load when operating from a 7.5VDC power supply.  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4951A does not require boot-  
strap capacitors, or snubber circuits.  
Pop & click circuitry eliminates noise during turn-on and  
turn-off transitions  
Wide supply voltage range: 2.7V to 9V  
Low current, active-low shutdown mode  
Low quiescent current  
Thermal shutdown protection  
Short circuit protection  
Unity-gain stable  
The LM4951A features a low-power consumption active-low  
shutdown mode. Additionally, the LM4951A features an in-  
ternal thermal shutdown protection mechanism and short  
circuit protection.  
External gain configuration capability  
Applications  
Portable devices  
The LM4951A contains advanced pop & click circuitry that  
eliminates noises which would otherwise occur during turn-on  
and turn-off transitions.  
Cell phones  
Laptop computers  
The LM4951A is unity-gain stable and can be configured by  
external gain-setting resistors.  
Computer speaker systems  
MP3 player speakers  
Key Specifications  
■ꢀWide Voltage Range  
2.7V to 9V  
■ꢀQuiescent Power Supply Current  
(VDD = 7.5V)  
2.5mA (typ)  
1.8W (typ)  
■ꢀPower Output BTL at 7.5V,  
1% THD  
0.01µA (typ)  
25ms (typ)  
■ꢀShutdown Current  
■ꢀFast Turn on Time  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2008 National Semiconductor Corporation  
300578  
www.national.com  

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