參數(shù)資料
型號(hào)： LM4817
廠商： National Semiconductor Corporation
元件分類(lèi)： 圓形連接器
英文描述： Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:85; Connector Shell Size:40; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight
中文描述： 1W的立體聲音頻放大器以及可調(diào)節(jié)輸出限加可調(diào)穩(wěn)壓器
文件頁(yè)數(shù)： 1/21頁(yè)
文件大?。?/td> 738K
代理商： LM4817
LM4817
1W Stereo Audio Amplifier Plus Adjustable Output
Limiter Plus Adjustable LDO
General Description
The LM4817 combines a bridge-connected (BTL) stereo
audio power amplifier with a low dropout voltage regulator
(LDO). The audio amplifier delivers 1.0W to a 8
load with a
less than 1.0% THD+N while operating on a 5V power
supply. With V
LIM
set to 1.0V, the amplifier outputs are
clamped to 6V
p-p
,
±
800mV.
With the LM4817’s adjustable low-dropout (LDO) CMOS
linear regulator delivers an output current of up to 300mA,
has shutdown mode (1nA, typ) low quiescent current (90μA,
typ) and LDO voltage (120mV, typ). The regulator is stable
with small ceramic capacitive load (2.2μF, typ). The regulator
includes regulation fault detection, a bandgap voltage refer-
ence, and constant current limiting. It is designed for low
power, low current applications that can take advantage of
its 300mA output current capability.
The LM4817 features an externally controlled micropower
shutdown mode and thermal shutdown protection. It also
utilizes circuitry that reduces "clicks and pops" during device
turn-on and return from shutdown.
Boomer audio power amplifiers are designed specifically to
use few external components and provide high quality output
power in a surface mount package.
Key Specifications
n
P
O
(BTL): V
DD
= 5V, THD+N
≤
1%, R
L
= 8
n
Power supply range (amplifier)
n
Power supply range (LDO)
n
Shutdown current
n
LDO output current
n
LDO dropout voltage (I
OUT
= 300mA)
n
LDO quiescent supply current
n
LDO shutdown supply current
n
LDO PSRR
n
LDO turn-on time
n
LDO ouput noise-voltage
1.0W(typ)
3.0V to 5.5V
2.5V to 6.0V
0.07μA (typ)
300mA (min)
120mV (typ)
90μA (typ)
1nA (typ)
60dB
120ms (typ)
37μV
RMS
(typ)
Features
n
Stereo BTL amplifier
n
Adjustable output voltage magnitude limiter
n
Adjustable LDO regulator
n
“Click and pop” suppression circuitry
n
LDO is stable with small-value ceramic output capacitors
n
Unity-gain stable audio amplifiers
n
LDO has over-current protection
n
Thermal shutdown protection circuitry
n
TSSOP (MH) package
Applications
n
Multimedia monitors
n
Portable and desktop computers
n
Portable televisions
Connection Diagram
20078129
Top View
Order Number LM4817MH
See NS Package Number MXA28A for TSSOP
Boomer
is a registered trademark of National Semiconductor Corporation.
March 2004
L
2004 National Semiconductor Corporation
DS200781
www.national.com
相關(guān)PDF資料
PDF描述
LM4849 Stereo 2W Audio Power Amplifiers with DC Volume Control and Input Mux
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4817MHX/NOPB 功能描述:IC AMP AUDIO PWR 1.5W AB 28TSSOP RoHS:是 類(lèi)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(lèi)型:D 類(lèi) 輸出類(lèi)型:1-通道（單聲道），帶立體聲耳機(jī) 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點(diǎn):消除爆音，差分輸入，I²C，靜音，關(guān)閉，音量控制 安裝類(lèi)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) 其它名稱(chēng):MAX97000EWA+T-ND
LM4818 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:350mW Audio Power Amplifier with Shutdown Mode
LM4818M 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:350mW Audio Power Amplifier with Shutdown Mode
LM4818M/NOPB 功能描述:IC AMP AUDIO PWR .35W MONO 8SOIC RoHS:是 類(lèi)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(lèi)型:H 類(lèi) 輸出類(lèi)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(lèi)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)
LM4818MABD 功能描述:BOARD EVALUATION LM4818MA RoHS:否 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 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:1 系列:-
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