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LM4991LDX

更新时间： 2024-11-25 19:57:51
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
15页 532K
描述
IC 3 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8, LLP-8, Audio/Video Amplifier

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中文翻译

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LM4991LDX 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：5.12标称带宽：20 kHz
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：S-XDSO-N8
JESD-609代码：e0长度：4 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：3 W封装主体材料：UNSPECIFIED
封装代码：HVSON封装等效代码：SOLCC8,.15,32
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）：235电源：2.6/5 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：10 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2.2 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：0.8 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：4 mm
Base Number Matches：1

LM4991LDX 数据手册

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May 2003  
LM4991  
3W Audio Power Amplifier with Shutdown Mode  
General Description  
Key Specifications  
n Improved PSRR at 217kHz and 1kHz  
n PO at VDD = 5.0V, 10% THD, 1kHz  
64dB (typ)  
The LM4991 is a mono bridged audio power amplifier ca-  
pable of delivering 3W of continuous average power into a  
3Ω load with less than 10% THD when powered by a 5V  
power supply (Note 1). To conserve power in portable appli-  
n
n
LM4991LD (only), 3Ω, 4Ω  
All packages, 8Ω load  
3W (typ), 2.5W (typ)  
1.5W (typ)  
cations, the LM4991’s micropower shutdown mode (ISD  
0.1µA, typ) is activated when VDD is applied to the SHUT-  
DOWN pin.  
=
n Shutdown current  
0.1µA (typ)  
Features  
Boomer audio power amplifiers are designed specifically to  
provide high power, high fidelity audio output. They require  
few external components and operate on low supply volt-  
ages from 2.2V to 5.5V. Since the LM4991 does not require  
output coupling capacitors, bootstrap capacitors, or snubber  
networks, it is ideally suited for low-power portable systems  
that require minimum volume and weight.  
n Available in space-saving LLP and MA packages  
n Ultra low current shutdown mode  
n Can drive capacitive loads up to 500pF  
n Improved pop & click circuitry reduces noises during  
turn-on and turn-off transitions  
n 2.2 - 5.5V operation  
Additional LM4991 features include thermal shutdown pro-  
tection, unity-gain stability, and external gain set.  
Note 1: An LM4991LD that has been properly mounted to a circuit board will  
deliver 3W into 3Ω (at 10% THD). The other package options for the LM4991  
will deliver 1.5W into 8Ω (at 10% THD). See the Application Information  
sections for further information concerning the LM4991LD and LM4991M.  
n No output coupling capacitors, snubber networks,  
bootstrap capacitors or gain-setting resistors required  
n Unity-gain stable  
Applications  
n Wireless and cellular handsets  
n PDA’s  
n Portable computers  
n Desktop computers  
Connection Diagrams  
Small Outline Package  
LLP Package  
20074002  
Top View  
Order Number LM4991MA  
See NS Package Number M08A  
20074039  
Top View  
Order Number LM4991LD  
See NS Package Number LDC08A  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2003 National Semiconductor Corporation  
DS200740  
www.national.com  
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