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LM4868LQX PDF预览

LM4868LQX

更新时间： 2024-01-03 05:17:04
品牌 Logo 应用领域
德州仪器 - TI 放大器商用集成电路
页数 文件大小 规格书
28页 792K
描述
3 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24

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LM4868LQX 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：VQCCN, LCC24,.16X.2,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.92标称带宽：20 kHz
商用集成电路类型：AUDIO AMPLIFIERJESD-30 代码：R-PQCC-N24
JESD-609代码：e0长度：5 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：24
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：PLASTIC/EPOXY
封装代码：VQCCN封装等效代码：LCC24,.16X.2,20
封装形状：RECTANGULAR封装形式：CHIP CARRIER, VERY THIN PROFILE
峰值回流温度（摄氏度）：235电源：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：15 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：4 mm
Base Number Matches：1

LM4868LQX 数据手册

 浏览型号LM4868LQX的Datasheet PDF文件第2页浏览型号LM4868LQX的Datasheet PDF文件第3页浏览型号LM4868LQX的Datasheet PDF文件第4页浏览型号LM4868LQX的Datasheet PDF文件第5页浏览型号LM4868LQX的Datasheet PDF文件第6页浏览型号LM4868LQX的Datasheet PDF文件第7页 
August 2002  
LM4868  
Output-Transient-Free Dual 2.1W Audio Amplifier Plus  
No Coupling Capacitor Stereo Headphone Function  
General Description  
Key Specifications  
n PO at 1% THD+N  
The LM4868 is a dual bridge-connected audio power ampli-  
fier which, when connected to a 5V supply, will deliver 2.1W  
to a 4Ω load (Note 1) or 2.4W to a 3Ω load (Note 2) with less  
than 1.0% THD+N. The LM4868 uses advanced, latest gen-  
eration circuitry to eliminate all traces of clicks and pops  
when the supply voltage is first applied. The amplifier has a  
headphone-amplifier-select input pin. It is used to switch the  
amplifiers from bridge to single-ended mode for driving  
headphones. A new circuit topology eliminates headphone  
output coupling capacitors (patent pending). A MUX control  
pin allows selection between the two sets of stereo input  
signals. The MUX control can also be used to select be-  
tween two different customer-specified closed-loop re-  
sponses.  
n
n
n
n
LM4868LQ, 3Ω load  
LM4868LQ, 4Ω load  
LM4868MTE, 4Ω  
LM4868MT, 8Ω  
2.4W (typ)  
2.1W (typ)  
1.9W (typ)  
1.1W (typ)  
n Single-ended mode - THD+N at 75mW into 32Ω  
(max)  
n Shutdown current  
0.5%  
0.7µA (typ)  
Features  
n Advanced “click and pop” suppression circuitry  
n Eliminates headphone amplifier output coupling  
capacitors (patent pending)  
Boomer audio power amplifiers are designed specifically to  
provide high quality output power from a surface mount  
package and require few external components. To simplify  
audio system design, the LM4868 combines dual bridge  
speaker amplifiers and stereo headphone amplifiers in one  
package.  
n Stereo headphone amplifier mode  
n Input mux control and two separate inputs per channel  
n Thermal shutdown protection circuitry  
n LLP, TSSOP, and exposed-DAP TSSOP packaging  
available  
The LM4868 features an externally controlled power-saving  
micropower shutdown mode, a stereo headphone amplifier  
mode, and thermal shutdown protection.  
Note 1: An LM4868LQ or LM4868MTE that has been properly mounted to  
a circuit board will deliver 2.1W into 4Ω. The Mux control can also be used to  
select two different closed-loop responses. LM4868MT will deliver 1.1W into  
8Ω. See the Application Information sections for further information concern-  
ing the LM4868LQ and the LM4868MT.  
Applications  
n Multimedia monitors  
n Portable and desktop computers  
n Portable audio systems  
Note 2: An LM4868LQ or LM4868MTE that has been properly mounted to a  
circuit board and forced-air cooled will deliver 2.4W into 3Ω.  
Connection Diagrams  
20026758  
Top View  
Order Number LM4868MT, LM4868MTE  
See NS Package Number MTC20 for TSSOP  
See NS Package Number MXA20A for Exposed-DAP TSSOP  
Boomer® is a registered trademark of National Semiconductor Corporation.  
© 2002 National Semiconductor Corporation  
DS200267  
www.national.com  
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