參數(shù)資料
型號： LM4871N/NOPB
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, PDIP8
封裝： DIP-8
文件頁數(shù)： 1/16頁
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
相關(guān)PDF資料
PDF描述
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
LM4874MH/NOPB 2.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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: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)
LM4872IBPX 功能描述:IC AMP AUDIO PWR 1W MONO 8USMD 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: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)
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 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: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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