Datasheet > LM4850MDC

LM4850MDC

更新时间： 2024-11-09 21:19:19

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器商用集成电路
页数	文件大小	规格书
20页	1100K
描述
IC,AUDIO AMPLIFIER,SINGLE,DIE

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技术参数
数据手册

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LM4850MDC 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	, DIE OR CHIP	Reach Compliance Code：	compliant
风险等级：	5.84	商用集成电路类型：	AUDIO AMPLIFIER
湿度敏感等级：	1	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装等效代码：	DIE OR CHIP
电源：	2.7/5 V	认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers	最大压摆率：	7 mA
温度等级：	INDUSTRIAL	Base Number Matches：	1

LM4850MDC 数据手册

July 2002

LM4850

Mono 1.5 W / Stereo 300 mW Power Amplifier

General Description

Key Specifications

n Output Power at 1% THD+N, 1kHz:

The LM4850 is an audio power amplifier capable of deliver-

ing 1.5W (typ) of continuous average power into a mono 4Ω

bridged-tied load (BTL) with 1% THD+N or 95mW per chan-

nel of continuous average power into stereo 32Ω

single-ended (SE) loads with 1% THD+N, using a 5V power

supply.

LM4850LD 3Ω BTL

LM4850LD 4Ω BTL

LM4850MM, MT 4Ω BTL

LM4850LD, MM, MT 8Ω BTL

LM4850LD, MM, MT 8Ω SE

LM4850LD, MM, MT 32Ω SE

1.9W (typ)

1.7W (typ)

1.5W (typ)

1.1W (typ)

300mW (typ)

95mW (typ)

1% (typ)

The LM4850 can automatically switch between mono BTL

and stereo SE modes utilizing a headphone sense pin. It is

ideal for any system that provides both a monaural speaker

output and a stereo line or headphone output

n THD+N at 1kHz, 95mW into 32Ω SE

n Single Supply Operation

n Shutdown Current

2.4 to 5.5V

44µA (typ)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. Since the LM4850 does not require

bootstrap capacitors or snubber networks, it is optimally

suited for low-power portable systems.

Features

n Mono 1.5W BTL or stereo 300mW output

n Headphone sense

The LM4850 features an externally controlled, micropower

consumption shutdown mode and thermal shutdown protec-

tion. The unity-gain stable LM4850’s gain is set by external

gain-setting resistors

Note 1: An LM4850LD that has been properly mounted to a circuit board will

deliver 1.9W into 3Ω (at 1% THD+N). The other package options for the

LM4850 will deliver 1.1W into 8Ω (at 1% THD+N). See Application Infor-

mation sections for further information concerning the LM4850LD,

LM4850MM, and LM4850MT.

n “Click and pop” suppression circuitry

n No bootstrap capacitors required

n Thermal shutdown protection

n Unity-gain stable

n LLP, TSSOP, and MSOP packaging

Applications

n Portable computers

n Desktop computers

n PDA’s

n Handheld games

Typical Application

20001031

FIGURE 1. Typical Audio Amplifier Application Circuit

Boomer^®is a registered trademark of National Semiconductor Corporation.

DS200010

www.national.com

12 3 4 5 6 7...20

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与LM4850MDC相关器件

型号	品牌	获取价格	描述	数据表
LM4850MM	NSC	获取价格	Mono 1.5 W / Stereo 300 mW Power Amplifier
LM4850MM/NOPB	TI	获取价格	0.3W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10, 0.118 INCH, 0.50 MM PITCH, MSOP-10
LM4850MT	NSC	获取价格	Mono 1.5 W / Stereo 300 mW Power Amplifier
LM4850MT/NOPB	TI	获取价格	0.3W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14, 4.40 MM, PLASTIC, TSSOP-14
LM4850MWC	TI	获取价格	IC,AUDIO AMPLIFIER,SINGLE,DIE
LM4851	NSC	获取价格	Integrated Audio Amplifier System
LM48510	NSC	获取价格	Boosted Class D Audio Power Amplifier
LM48510_0710	NSC	获取价格	Boosted Class D Audio Power Amplifier
LM48510SD	NSC	获取价格	Boosted Class D Audio Power Amplifier
LM48510SDX	NSC	获取价格	IC 1.7 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO16, LLP-16, Audio/Video Amplifier

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