LM4951A

更新时间： 2024-11-21 11:36:35

品牌	Logo	应用领域
美国国家半导体 - NSC		音频放大器
页数	文件大小	规格书
20页	1824K
描述
Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection

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LM4951A 数据手册

September 5, 2008

LM4951A

Wide Voltage Range 1.8 Watt Audio Amplifier With Short

Circuit Protection

General Description

Features

The LM4951A is an audio power amplifier designed for ap-

plications with supply voltages ranging from 2.7V up to 9V.

The LM4951A is capable of delivering 1.8W continuous av-

erage power with less than 1% THD+N into a bridge connect-

ed 8Ω load when operating from a 7.5VDC power supply.

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4951A does not require boot-

strap capacitors, or snubber circuits.

Pop & click circuitry eliminates noise during turn-on and

turn-off transitions

Wide supply voltage range: 2.7V to 9V

■

Low current, active-low shutdown mode

Low quiescent current

Thermal shutdown protection

Short circuit protection

Unity-gain stable

The LM4951A features a low-power consumption active-low

shutdown mode. Additionally, the LM4951A features an in-

ternal thermal shutdown protection mechanism and short

circuit protection.

External gain configuration capability

Applications

Portable devices

■

The LM4951A contains advanced pop & click circuitry that

eliminates noises which would otherwise occur during turn-on

and turn-off transitions.

Cell phones

Laptop computers

The LM4951A is unity-gain stable and can be configured by

external gain-setting resistors.

Computer speaker systems

MP3 player speakers

■

Key Specifications

■ꢀWide Voltage Range

2.7V to 9V

■ꢀQuiescent Power Supply Current

(V_DD= 7.5V)

2.5mA (typ)

1.8W (typ)

■ꢀPower Output BTL at 7.5V,

1% THD

0.01µA (typ)

25ms (typ)

■ꢀShutdown Current

■ꢀFast Turn on Time

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

300578

www.national.com

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LM4951ASD	NSC	获取价格	Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection
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LM4951ASDX	NSC	获取价格	Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection
LM4951ASDX/NOPB	TI	获取价格	具有短路保护的 1.8W 单声道 2.7V 至 9V 模拟输入 AB 类音频放大器 \| D
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LM4951SD/NOPB	TI	获取价格	Wide Voltage Range 1.8 Watt Audio Amplifier
LM4951SDX	NSC	获取价格	IC 1.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10, LLP-10, Audio/Video Amplifier
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