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LM4954TLX/NOPB PDF预览

LM4954TLX/NOPB

更新时间： 2024-01-14 23:53:47
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
23页 1414K
描述
AUDIO AMPLIFIER

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LM4954TLX/NOPB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：FBGA, BGA9,3X3,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.33.00.01
风险等级：5.21商用集成电路类型：AUDIO AMPLIFIER
JESD-30 代码：S-PBGA-B9JESD-609代码：e1
湿度敏感等级：1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封装主体材料：PLASTIC/EPOXY
封装代码：FBGA封装等效代码：BGA9,3X3,20
封装形状：SQUARE封装形式：GRID ARRAY, FINE PITCH
峰值回流温度（摄氏度）：260电源：3/7 V
认证状态：Not Qualified子类别：Audio/Video Amplifiers
最大压摆率：5 mA表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LM4954TLX/NOPB 数据手册

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LM4954  
www.ti.com  
SNAS292B –JUNE 2005–REVISED APRIL 2013  
LM4954 Boomer™ Audio Power Amplifier Series High Voltage 3 Watt Audio Power  
Amplifier  
Check for Samples: LM4954  
1
FEATURES  
DESCRIPTION  
The LM4954 is an audio power amplifier primarily  
designed for demanding applications in mobile  
phones and other portable communication device  
applications. It is capable of delivering 2.4 Watts of  
continuous average power to an 8Ω BTL load with  
less than 1% THD+N from a 7VDC power supply.  
23  
•
No Output Coupling Capacitors, Snubber  
Networks or Bootstrap Capacitors Required  
•
•
•
•
Unity Gain Stable  
Externally Configurable Gain  
Ultra Low Current Active Low Shutdown Mode  
Boomer audio power amplifiers are designed  
specifically to provide high quality output power with a  
minimal number of external components. The  
LM4954 does not require output coupling capacitors  
or bootstrap capacitors, and therefore is ideally suited  
for lower-power portable applications where minimal  
space and power consumption are primary  
requirements.  
BTL Output can Drive Capacitive Loads Up to  
100pF  
•
•
•
“Click and Pop” Suppression Circuitry  
2.7V - 9.0V Operation  
Available in Space-Saving DSBGA Package  
APPLICATIONS  
The LM4954 features a low-power consumption  
global shutdown mode which is achieved by driving  
the shutdown pin with logic low. Additionally, the  
LM4954 features an internal thermal shutdown  
protection mechanism.  
•
•
Mobile Phones  
PDAs  
KEY SPECIFICATIONS  
•
Wide Power Supply Voltage Range, 2.7 ≤ VDD ≤  
9V  
The LM4954 contains advanced pop & click circuitry  
which eliminates noises that would otherwise occur  
during turn-on and turn-off transitions.  
•
Output Power: VDD = 7V, 1% THD+N, 2.4W  
(Typ)  
The LM4954 is unity-gain stable and can be  
configured by external gain-setting resistors.  
•
•
•
Quiescent Power Supply Current, 3mA (Typ)  
PSRR: VDD = 5V and 3V at 217Hz, 80dB (Typ)  
Shutdown Power Supply Current, 0.01µA (Typ)  
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
3
Boomer is a trademark of Texas Instruments.  
All other 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 © 2005–2013, Texas Instruments Incorporated  
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