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参数资料
| 型号： | LM4817MH/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| 封装： | 4.40 MM, TSSOP-28 |
| 文件页数： | 1/21页 |
| 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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| LM4820MMX-6/NOPB | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4817MHX/NOPB | 功能描述:IC AMP AUDIO PWR 1.5W AB 28TSSOP 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:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，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) 其它名称:MAX97000EWA+T-ND |
| LM4818 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:350mW Audio Power Amplifier with Shutdown Mode |
| LM4818M | 制造商:NSC 制造商全称: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 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) |
| LM4818MABD | 功能描述:BOARD EVALUATION LM4818MA RoHS:否 类别:编程器，开发系统 >> 评估板 - 音频放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
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