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LM4889 PDF预览

LM4889

更新时间: 2024-01-19 03:56:10
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
19页 760K
描述
1 Watt Audio Power Amplifier

LM4889 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:TSSOP, TSSOP8,.19
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:0.85
商用集成电路类型:AUDIO AMPLIFIER增益:36 dB
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:3 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:1.2 W
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.19封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:2.6/5 V认证状态:Not Qualified
座面最大高度:1.07 mm子类别:Audio/Video Amplifiers
最大压摆率:8 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:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LM4889 数据手册

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June 2003  
LM4889  
1 Watt Audio Power Amplifier  
General Description  
Key Specifications  
The LM4889 is an audio power amplifier primarily designed  
for demanding applications in mobile phones and other por-  
table communication device applications. It is capable of  
delivering 1 watt of continuous average power to an 8BTL  
load with less than 2% distortion (THD+N) from a 5VDC  
power supply.  
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Improved PSRR at 217Hz, 5 - 3.3V  
Power Output at 5.0V & 2% THD  
Power Output at 3.3V & 1% THD  
Shutdown Current at 3.3 & 2.6V  
75dB  
1.0W(typ.)  
400mW(typ.)  
0.01µA(typ.)  
Boomer audio power amplifiers were designed specifically to  
provide high quality output power with a minimal amount of  
external components. The LM4889 does not require output  
coupling capacitors or bootstrap capacitors, and therefore is  
ideally suited for mobile phone and other low voltage appli-  
cations where minimal power consumption is a primary re-  
quirement.  
Features  
n Available in space-saving MSOP, SOIC, LLP, and micro  
SMD packages  
n Ultra low current shutdown mode (3.3 to 2.6V - 0.01µA)  
n Can drive capacitive loads up to 500 pF  
n Improved pop & click circuitry eliminates noises during  
turn-on and turn-off transitions  
n 2.2 - 5.5V operation  
n No output coupling capacitors, snubber networks or  
bootstrap capacitors required  
The LM4889 features a low-power consumption shutdown  
mode, which is achieved by driving the shutdown pin with a  
logic low. Additionally, the LM4889 features an internal ther-  
mal shutdown protection mechanism.  
The LM4889 contains advanced pop & click circuitry to  
eliminate noise which would otherwise occur during turn-on  
and turn-off transitions.  
n Unity-gain stable  
n External gain configuration capability  
The LM4889 is unity-gain stable and can be configured by  
external gain-setting resistors.  
Applications  
n Mobile Phones  
n PDAs  
n Portable electronic devices  
Typical Application  
20035801  
FIGURE 1. Typical Audio Amplifier Application Circuit  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2003 National Semiconductor Corporation  
DS200358  
www.national.com  

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