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LM4873MTX

更新时间： 2024-11-04 15:46:23
品牌 Logo 应用领域
德州仪器 - TI 放大器光电二极管商用集成电路
页数 文件大小 规格书
30页 1697K
描述
1.9W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, 4.40 MM, PLASTIC, TSSOP-20

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LM4873MTX 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP, TSSOP20,.25针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.06
标称带宽：20 kHz商用集成电路类型：AUDIO AMPLIFIER
谐波失真：1%JESD-30 代码：R-PDSO-G20
JESD-609代码：e0长度：6.5 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：1.9 W封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP20,.25
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：5 V
认证状态：Not Qualified座面最大高度：1.1 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：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：40宽度：4.4 mm
Base Number Matches：1

LM4873MTX 数据手册

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LM4873  
www.ti.com  
SNAS033E –AUGUST 2000–REVISED MAY 2013  
LM4873  
Dual 2.1W Audio Amplifier Plus Stereo  
Headphone Function  
Check for Samples: LM4873  
1
FEATURES  
DESCRIPTION  
The LM4873 is a dual bridge-connected audio power  
amplifier which, when connected to a 5V supply, will  
deliver 2.1W to a 4Ω load or 2.4W to a 3Ω load with  
less than 1.0% THD+N (see Notes below). In  
addition, the headphone input pin allows the  
amplifiers to operate in single-ended mode when  
driving stereo headphones. A MUX control pin allows  
selection between the two stereo sets of amplifier  
inputs. The MUX control can also be used to select  
two different closed-loop responses.  
2
•
Input Mux Control and Two Separate Inputs  
Per Channel  
•
•
•
•
Stereo Headphone Amplifier Mode  
“Click and Pop” Suppression Circuitry  
Thermal Shutdown Protection Circuitry  
PCB Area-Saving DSBGA and Thin DSBGA  
Packages  
•
TSSOP and HTSSOP and WQFN Packages  
Boomer audio power amplifiers were designed  
specifically to provide high quality output power from  
a surface mount package while requiring few external  
components. To simplify audio system design, the  
LM4873 combines dual bridge speaker amplifiers and  
stereo headphone amplifiers on one chip.  
APPLICATIONS  
•
•
•
Multimedia Monitors  
Portable and Desktop Computers  
Portable Audio Systems  
The LM4873 features an externally controlled, low-  
KEY SPECIFICATIONS  
power consumption shutdown mode,  
a
stereo  
•
PO at 1% THD+N  
headphone amplifier mode, and thermal shutdown  
protection. It also utilizes circuitry to reduce “clicks  
and pops” during device turn-on.  
–
LM4873LQ, 3Ω, 4Ω Loads 2.4W (typ), 2.1 W  
(typ)  
–
LM4873MTE-1, 3Ω, 4Ω loads 2.4W (typ), 2.1  
Note:  
An  
LM4873MTE-1,  
LM4873MTE,  
or  
LM4873LQ that has been properly mounted to a  
circuit board will deliver 2.1W into 4Ω. The other  
package options for the LM4873 will deliver 1.1W into  
8Ω. See the APPLICATION INFORMATION sections  
for further information concerning the LM4873MTE-1,  
LM4873MTE, and the LM4873LQ.  
W (typ)  
–
–
–
LM4873IBL, 8Ω Load 1.1 W (typ)  
LM4873MTE, 4Ω 1.9 W (typ)  
LM4873, 8Ω 1.1 W (typ)  
•
Single-Ended Mode THD+N at 75 mW Into  
32Ω 0.5 % (max)  
Note:  
An  
LM4873MTE-1,  
LM4873MTE,  
or  
LM4873LQ that has been properly mounted to a  
circuit board and forced-air cooled will deliver 2.4W  
into 3Ω.  
•
•
Shutdown Current 0.7 µA (typ)  
Supply Voltage Range 2 to 5.5 V  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  
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