LM4668MH

更新时间： 2024-11-25 22:19:59

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	470K
描述
10W High-Efficiency Mono BTL Audio Power Amplifier

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LM4668MH 数据手册

October 2004

LM4668

10W High-Efficiency Mono BTL Audio Power Amplifier

General Description

Key Specifications

The LM4668 is a high efficiency switching audio power

amplifier primarily designed for demanding applications in

flat panel monitors and TV’s. It is capable of delivering 6W to

an 8Ω mono BTL load with less than 1% distortion (THD+N)

from a 12V_DCpower supply.

Power Output BTL (V_DD= 14V,

f_IN= 1kHz, THD+N = 10%, R_L= 8Ω)

Quiescent Power Supply Current

Efficiency (V_DD= 12V, f_IN= 1kHz,

R_L= 8Ω, P_OUT= 6W)

10W (typ)

30mA (typ)

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4668 features a micro-power,

active-low shutdown mode, an internal thermal shutdown

protection mechanism, and short circuit protection.

79% (typ)

0.15mA (typ)

30dB (typ)

Shutdown Current

Fixed Gain

The LM4668 contains advanced transient (“pop and click”)

suppression circuitry that eliminates noises that would oth-

erwise occur during turn-on and turn-off transitions.

Features

n Soft-start circuitry eliminates noise during turn-on

transition

n Low current shutdown mode

n Low quiescent current

n 6W BTL output, R_L= 8Ω

n Short circuit protection

n Fixed, internally set gain of 30dB

Applications

n Flat Panel Monitors

n Flat Panel TVs

n Computer Sound Cards

Connection Diagrams

LD Package

MH Package

20089102

Top View

Order Number LM4668LD

See NS Package Number LDC14A

200891G3

Top View

Order Number LM4668MH

See NS Package Number MXA20A

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

DS200891

www.national.com

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