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参数资料
| 型号： | LM4871N/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP8 |
| 封装： | DIP-8 |
| 文件页数： | 1/16页 |
| 文件大小： | 472K |
| 代理商： | LM4871N/NOPB |
LM4871
3W Audio Power Amplifier with Shutdown Mode
General Description
The LM4871 is a mono bridged audio power amplifier ca-
pable of delivering 3W of continuous average power into a
3
load with less than 10% THD when powered by a 5V
power supply (Note 1). To conserve power in portable appli-
cations, the LM4871’s micropower shutdown mode (I
Q =
0.6A, typ) is activated when V
DD is applied to the SHUT-
DOWN pin.
Boomer audio power amplifiers are designed specifically to
provide high power, high fidelity audio output. They require
few external components and operate on low supply volt-
ages from 2.0V to 5.5V. Since the LM4871 does not require
output coupling capacitors, bootstrap capacitors, or snubber
networks, it is ideally suited for low-power portable systems
that require minimum volume and weight.
Additional LM4871 features include thermal shutdown pro-
tection, unity-gain stability, and external gain set.
Note 1: An LM4871LD that has been properly mounted to a circuit board will
deliver 3W into 3
(at 10% THD). The other package options for the LM4871
will deliver 1.5W into 8
(at 10% THD). See the Application Information
sections for further information concerning the LM4871LD, LM4871MM,
LM4871M, and the LM4871N.
Key Specifications
n
PO at 10% THD+N, 1kHz
n
LM4871LD: 3
,4 loads
3W (typ), 2.5W (typ)
n
All other LM4871 packages: 8
load
1.5W (typ)
n
Shutdown current
0.6A (typ)
n
Supply voltage range
2.0V to 5.5V
n
THD at 1kHz at 1W continuous average output power
into 8
0.5% (max)
Features
n
No output coupling capacitors, bootstrap capacitors, or
snubber circuits required
n
Unity-gain stable
n
LLP, MSOP, SO, or DIP packaging
n
External gain configuration capability
n
Pin compatible with the LM4861
Applications
n
Portable computers
n
Desktop computers
n
Low voltage audio systems
Connection Diagrams
MSOP, Small Outline, and DIP Package
LLP Package
10000802
Top View
Order Number LM4871MM, LM4871M, or LM4871N
See NS Package Number MUA08A, M08A, or N08E
10000839
Top View
Order Number LM4871LD
See NS Package Number LDC08A
Boomer is a registered trademark of National Semiconductor Corporation.
January 2003
LM4871
3W
Audio
Power
Amplifier
with
Shutdown
Mode
2004 National Semiconductor Corporation
DS100008
www.national.com
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| LM4872IBPX/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| LM4872IBP/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA8 |
| LM4873MDC | 1.1 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
| LM4873MWC | 1.1 W, 2 CHANNEL, AUDIO AMPLIFIER, UUC |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4872 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:1 Watt Audio Power Amplifier in micro SMD package |
| LM4872IBP | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:否 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4872IBPX | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4872ITP | 制造商:Texas Instruments 功能描述:AMP AUDIO 1W BOOMER SMD 4872 |
| LM4872ITP/NOPB | 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
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