參數(shù)資料
型號(hào)： LM4871MWA
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 音頻／視頻放大
英文描述： 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC
封裝： WAFER
文件頁(yè)數(shù)： 1/15頁(yè)
文件大小： 454K
代理商： LM4871MWA
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
Typical Application
Connection Diagram
Boomer is a registered trademark of National Semiconductor Corporation.
DS100008-1
FIGURE 1. Typical Audio Amplifier Application Circuit
MSOP, Small Outline, and DIP Package
DS100008-2
Top View
Order Number LM4871MM, LM4871M, or LM4871N
See NS Package Number MUA08A, M08A, or N08E
LLP Package
DS100008-39
Top View
Order Number LM4871LD
See NS Package Number LDC08A
October 2000
LM4871
3W
Audio
Power
Amplifier
with
Shutdown
Mode
2000 National Semiconductor Corporation
DS100008
www.national.com
相關(guān)PDF資料
PDF描述
LM4871N/NOPB 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP8
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4871MX 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4871MX/NOPB 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
LM4871N 功能描述:IC AMP AUDIO PWR 3W MONO AB 8DIP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
LM4872 制造商:NSC 制造商全稱: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 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR)
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