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LM4950TS PDF预览

LM4950TS

更新时间: 2024-01-28 04:06:21
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
25页 1441K
描述
7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier

LM4950TS 技术参数

是否无铅: 不含铅生命周期:Active
零件包装代码:D2PAK包装说明:,
针数:4Reach Compliance Code:unknown
风险等级:5.82标称带宽:20 kHz
商用集成电路类型:AUDIO AMPLIFIERJESD-30 代码:R-PSSO-G9
JESD-609代码:e1长度:10.16 mm
湿度敏感等级:1信道数量:2
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:3.1 W封装主体材料:PLASTIC/EPOXY
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:COMMERCIAL
座面最大高度:4.72 mm最大供电电压 (Vsup):16 V
最小供电电压 (Vsup):9.6 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:TIN SILVER COPPER
端子形式:GULL WING端子节距:0.97 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:8.69 mm

LM4950TS 数据手册

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August 2004  
LM4950  
7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier  
General Description  
Key Specifications  
The LM4950 is a dual audio power amplifier primarily de-  
signed for demanding applications in flat panel monitors and  
TV’s. It is capable of delivering 3.1 watts per channel to a 4  
single-ended load with less than 1% THD+N or 7.5 watts  
mono BTL to an 8load, with less than 10% THD+N from a  
12VDC power supply.  
j
Quiscent Power Supply Current  
16mA (typ)  
3.1W (typ)  
j
POUT (SE)  
VDD = 12V, RL = 4, 1% THD+N  
POUT (BTL)  
j
j
VDD = 12V, RL = 8, 10% THD+N  
Shutdown current  
7.5W (typ)  
40µA (typ)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4950 does not require boot-  
strap capacitors or snubber circuits. Therefore, it is ideally  
suited for display applications requiring high power and mini-  
mal size.  
Features  
n Pop & click circuitry eliminates noise during turn-on and  
turn-off transitions  
The LM4950 features a low-power consumption active-low  
shutdown mode. Additionally, the LM4950 features an inter-  
nal thermal shutdown protection mechanism along with short  
circuit protection.  
n Low current, active-low shutdown mode  
n Low quiescent current  
n Stereo 3.1W output, RL = 4Ω  
n Mono 7.5W BTL output, RL = 8Ω  
n Short circuit protection  
The LM4950 contains advanced pop & click circuitry that  
eliminates noises which would otherwise occur during  
turn-on and turn-off transitions.  
n Unity-gain stable  
n External gain configuration capability  
The LM4950 is a unity-gain stable and can be configured by  
external gain-setting resistors.  
Applications  
n Flat Panel Monitors  
n Flat panel TV’s  
n Computer Sound Cards  
Typical Application  
20047078  
FIGURE 1. Typical Bridge-Tied-Load (BTL) Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS200470  
www.national.com  

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