LM4872

更新时间： 2024-02-23 15:38:32

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器功率放大器
页数	文件大小	规格书
14页	428K
描述
1 Watt Audio Power Amplifier in micro SMD package

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技术参数
数据手册

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LM4872 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	FBGA, BGA8,3X3,20	Reach Compliance Code：	compliant
风险等级：	5.84	商用集成电路类型：	AUDIO AMPLIFIER
JESD-30 代码：	S-PBGA-B8	JESD-609代码：	e1
湿度敏感等级：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	FBGA	封装等效代码：	BGA8,3X3,20
封装形状：	SQUARE	封装形式：	GRID ARRAY, FINE PITCH
电源：	2.6/5 V	认证状态：	Not Qualified
子类别：	Audio/Video Amplifiers	最大压摆率：	7 mA
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin/Silver/Copper (Sn/Ag/Cu)	端子形式：	BALL
端子节距：	0.5 mm	端子位置：	BOTTOM
Base Number Matches：	1

LM4872 数据手册

February 2000

LM4872

1 Watt Audio Power Amplifier in micro SMD package

General Description

Key Specifications

The LM4872 is a bridge-connected audio power amplifier ca-

pable of delivering 1 W of continuous average power to an

8Ω load with less than .2% (THD) from a 5V power supply.

n Power Output at 0.2% THD

n Shutdown Current

1 W (typ)

0.01 µA (typ)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. Since the LM4872 does not require

output coupling capacitors or bootstrap capacitors. It is opti-

mally suited for low-power portable applications.

Features

n micro SMD package (see App. note AN-1112)

n 5V - 2V operation

n No output coupling capacitors or bootstrap capacitors.

n Unity-gain stable

n External gain configuration capability

The LM4872 features an externally controlled, low-power

consumption shutdown mode, as well as an internal thermal

shutdown protection mechanism.

The unity-gain stable LM4872 can be configured by external

gain-setting resistors.

Applications

n Cellular Phones

n Portable Computers

n Low Voltage Audio Systems

Typical Application

Connection Diagram

8 Bump micro SMD

DS101230-23

Top View

Order Number LM4872IBP, LM4872IBPX

See NS Package Number BPA08B6B

DS101230-1

FIGURE 1. Typical Audio Amplifier Application Circuit

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

DS101230

www.national.com

12 3 4 5 6 7...14

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