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LM4892MMX/NOPB

更新时间： 2024-02-26 08:51:47
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
22页 1106K
描述
1W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, MSOP-8

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LM4892MMX/NOPB 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：MSOP
包装说明：TSSOP, TSSOP8,.19针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.71
Is Samacsys：N标称带宽：80 kHz
商用集成电路类型：AUDIO AMPLIFIER谐波失真：2%
JESD-30 代码：S-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 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：SQUARE
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：1.1 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：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：40
宽度：3 mmBase Number Matches：1

LM4892MMX/NOPB 数据手册

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OBSOLETE  
LM4892  
www.ti.com  
SNAS130E –MAY 2001–REVISED APRIL 2013  
LM4892 Boomer® Audio Power Amplifier Series 1 Watt Audio Power Amplifier with  
Headphone Sense  
Check for Samples: LM4892  
1
FEATURES  
DESCRIPTION  
The LM4892 is an audio power amplifier primarily  
designed for demanding applications in mobile  
phones and other portable communication device  
applications. It is capable of delivering 1 watt of  
continuous average power to an 8Ω BTL load with  
less than 1% distortion (THD+N) from a 5VDC power  
supply. Switching between bridged speaker mode  
and headphone (single-ended) mode is accomplished  
using the headphone sense pin.  
2
•
Available in Space-Saving Packages: WSON,  
DSBGA, VSSOP, and SOIC  
•
•
Ultra Low Current Shutdown Mode  
BTL Output Can Drive Capacitive Loads up to  
500pF  
•
Improved Pop & Click Circuitry Eliminates  
Noise During Turn-On and Turn-Off  
Transitions  
Boomer audio power amplifiers are designed  
specifically to provide high quality output power with a  
minimal amount of external components. The  
LM4892 does not require output coupling capacitors  
or bootstrap capacitors, and therefore is ideally suited  
for mobile phone and other low voltage applications  
where minimal power consumption is a primary  
requirement.  
•
•
2.2 - 5.5V Operation  
No Output Coupling Capacitors, Snubber  
Networks or Bootstrap Capacitors Required  
•
•
•
•
Thermal Shutdown Protection  
Unity-Gain Stable  
External Gain Configuration Capability  
Headphone Amplifier Mode  
The LM4892 features a low-power consumption  
shutdown mode, which is achieved by driving the  
shutdown pin with logic low. Additionally, the LM4892  
features an internal thermal shutdown protection  
mechanism.  
KEY SPECIFICATIONS  
•
•
•
•
PSRR at 217Hz, VDD = 5V, 8Ω Load: 62dB (typ)  
Power Output at 5.0V & 1% THD: 1.0W (typ)  
Power Output at 3.3V & 1% THD: 400mW (typ)  
Shutdown Current: 0.1µA (typ)  
The LM4892 contains advanced pop & click circuitry  
which eliminates noise which would otherwise occur  
during turn-on and turn-off transitions.  
The LM4892 is unity-gain stable and can be  
configured by external gain-setting resistors.  
APPLICATIONS  
•
•
•
Mobile Phones  
PDAs  
Portable Electronic Devices  
TYPICAL APPLICATION  
Figure 1. Typical Audio Amplifier Application Circuit (Pin #'s apply to M & MM packages)  
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 © 2001–2013, Texas Instruments Incorporated  
 
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