LM48411

更新时间： 2024-02-29 06:42:18

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
18页	406K
描述
Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio Power Amplifier with E2S

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LM48411 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	VFBGA, BGA16,4X4,20
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	Factory Lead Time：	1 week
风险等级：	5.5	商用集成电路类型：	AUDIO AMPLIFIER
增益：	24 dB	谐波失真：	10%
JESD-30 代码：	R-PBGA-B16	JESD-609代码：	e1
长度：	2.033 mm	湿度敏感等级：	1
信道数量：	2	功能数量：	1
端子数量：	16	最高工作温度：	85 °C
最低工作温度：	-40 °C	标称输出功率：	2.5 W
封装主体材料：	PLASTIC/EPOXY	封装代码：	VFBGA
封装等效代码：	BGA16,4X4,20	封装形状：	RECTANGULAR
封装形式：	GRID ARRAY, VERY THIN PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	260
电源：	3.6 V	认证状态：	Not Qualified
座面最大高度：	0.675 mm	子类别：	Audio/Video Amplifiers
最大压摆率：	7.5 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.4 V	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	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	1.9835 mm	Base Number Matches：	1

LM48411 数据手册

October 2007

LM48411ꢀ

Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio

Power Amplifier with E²S

General Description

Key Specifications

The LM48411 is a single supply, high efficiency, 2.5W/chan-

nel Class D audio amplifier. The LM48411 features National's

Enhanced Emissions Suppression (E²S) system, that fea-

tures a unique patent-pending ultra low EMI, spread spec-

trum, PWM architecture, that significantly reduces RF emis-

sions while preserving audio quality and efficiency. The E²S

system improves battery life, reduces external component

count, board area consumption, system cost, and simplifying

design.

■ꢀEfficiency at 3.6V, 500mW into 8Ω

speaker

87% (typ)

80% (typ)

■ꢀEfficiency at 3.6V, 100mW into 8Ω

speaker

■ꢀEfficiency at 5V, 1W into 8Ω

speaker

88% (typ)

■ꢀQuiescent current, 3.6V supply

4.2mA (typ)

The LM48411 is designed to meet the demands of mobile

phones and other portable communication devices. Operat-

ing on a single 5V supply, it is capable of delivering 2.5W/

channel of continuous output power to a 4Ω load with less

than 10% THD+N. Its flexible power supply requirements al-

low operation from 2.4V to 5.5V. The wide band spread

spectrum architecture of the LM48411 reduces EMI-radiated

emissions due to the modulator frequency.

■ꢀPower Output at V_DD= 5V

R_L= 4Ω, THD ≤ 10%

2.5W (typ)

■ꢀPower Output at V_DD= 5V

R_L= 8Ω, THD ≤ 10%

1.5W (typ)

0.01µA (typ)

2.4V to 5.5V

■ꢀTotal shutdown power supply

current

The LM48411 features high efficiency compared to a con-

ventional Class AB amplifier. The E²S system includes an

advanced, patent-pending edge rate control (ERC) architec-

ture that further reduce emissions by minimizing the high

frequency component of the device output, while maintaining

high quality audio reproduction and high efficiency (η = 87%

at V_DD= 3.6V, P_O= 500mW). Four gain options are pin se-

lectable through GAIN0 and GAIN1 pins.

■ꢀSingle supply range

Features

E²S system reduces EMI preserving Audio Quality and

Efficiency

■

Output short circuit protection

Stereo Class D Operation

■

The LM48411 features a low-power consumption shutdown

mode. Shutdown may be enabled by driving the Shutdown

pin to a logic low (GND).

No output filter required for inductive loads

Logic selectable gain

Independent shutdown control

Minimum external components

"Click and pop" suppression circuitry

Micro-power shutdown mode

Output short circuit protection prevents the device from being

damaged during fault conditions. Superior click and pop sup-

pression eliminates audible transients on power up/down and

during shutdown. Independent left/right shutdown control

maximizes power savings in mixed mono/stereo applications.

Available in space-saving 0.5mm pitch micro SMD

package

Applications

Mobile phones

■

PDAs

Portable electronic devices

Boomer® is a registered trademark of National Semiconductor Corporation.

300095

www.national.com

12 3 4 5 6 7...18

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LM48411_08	NSC	Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio Power Amplifier with E2S	获取价格
LM48411TL	NSC	Ultra-Low EMI, Filterless, 2.5W, Stereo, Class D Audio Power Amplifier with E2S	获取价格
LM48411TLX	TI	IC,AUDIO AMPLIFIER,DUAL,BGA,16PIN,PLASTIC	获取价格
LM48413	NSC	Ultra Low EMI, Filterless, 1.2W Stereo Class D Audio Power Amplifier with E2S and National	获取价格
LM48413TL	NSC	Ultra Low EMI, Filterless, 1.2W Stereo Class D Audio Power Amplifier with E2S and National	获取价格
LM48413TLX	NSC	Ultra Low EMI, Filterless, 1.2W Stereo Class D Audio Power Amplifier with E2S and National	获取价格

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