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參數(shù)資料
| 型號(hào)： | LM4817MH/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| 封裝： | 4.40 MM, TSSOP-28 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大小： | 1119K |
| 代理商： | LM4817MH/NOPB |
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 (90A,
typ) and LDO voltage (120mV, typ). The regulator is stable
with small ceramic capacitive load (2.2F, 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): VDD = 5V, THD+N
≤ 1%, R
L =8
1.0W(typ)
n
Power supply range (amplifier)
3.0V to 5.5V
n
Power supply range (LDO)
2.5V to 6.0V
n
Shutdown current
0.07A (typ)
n
LDO output current
300mA (min)
n
LDO dropout voltage (I
OUT = 300mA)
120mV (typ)
n
LDO quiescent supply current
90A (typ)
n
LDO shutdown supply current
1nA (typ)
n
LDO PSRR
60dB
n
LDO turn-on time
120ms (typ)
n
LDO ouput noise-voltage
37V
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.
February 2006
LM4817
1W
Stereo
Audio
Amplifier
Plus
Adjustable
Output
Limiter
Plus
Adjustable
LDO
2006 National Semiconductor Corporation
DS200781
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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| LM4818 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:350mW Audio Power Amplifier with Shutdown Mode |
| LM4818M | 制造商:NSC 制造商全稱: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) |
| LM4818MABD | 功能描述:BOARD EVALUATION LM4818MA RoHS:否 類別:編程器，開發(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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