LM4865

更新时间： 2024-11-17 22:51:39

品牌	Logo	应用领域
美国国家半导体 - NSC		开关放大器功率放大器
页数	文件大小	规格书
9页	343K
描述
750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch

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LM4865 数据手册

December 1999

LM4865

750 mW Audio Power Amplifier with DC Volume Control

and Headphone Switch

n Hand held radio

n Other portable audio devices

General Description

The LM4865 is a mono bridged audio power amplifier with

DC volume control, capable of delivering 750 mW of continu-

ous average power into an 8Ω load with less than 1% THD

Key Specifications

n P_Oat 1.0% THD+N into 8Ω (SOP): 750 mW (typ)

n P_Oat 10% THD+N into 8Ω (SOP): 1W (typ)

n Shutdown Current: 0.7 µA (typ)

from a 5V power supply. Switching between bridged speaker

mode and headphone (single ended) mode is accomplished

via a headphone sense pin. In addition, LM4865 is set into

low current consumption shutdown mode (0.7 µA typical) by

lowering the DC Vol/SD pin to below 0.3V.

Features

n DC volume control

n Headphone amplifier mode

n “Click and pop” suppression

n Shutdown control when volume control pin is low

n Thermal shutdown protection

Boomer audio power amplifiers are designed specifically to

provide high power audio output, with quality sound, from a

low supply voltage source while requiring the minimal

amount of external components.

Applications

n GSM phones and accessories, DECT, office phones

Typical Application

Connection Diagram

MSOP, SOP Package

DS101025-2

Top View

Order Number LM4865M, LM4865MM

See NS Package Number M08A, MUA08A

DS101025-1

FIGURE 1. Typical Audio Amplifier

Application Circuit

™

BOOMER is a trademark of National Semiconductor Corporation.

DS101025

www.national.com

12 3 4 5 6 7...9

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与LM4865相关器件

型号	品牌	获取价格	描述	数据表
LM4865IBP/NOPB	TI	获取价格	1 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA8, MICRO SMD-8
LM4865IBPX/NOPB	TI	获取价格	1 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA8, MICRO SMD-8
LM4865ITP	NSC	获取价格	IC,AUDIO AMPLIFIER,SINGLE,BGA,8PIN,PLASTIC
LM4865ITPX	NSC	获取价格	IC,AUDIO AMPLIFIER,SINGLE,BGA,8PIN,PLASTIC
LM4865ITPX/NOPB	NSC	获取价格	IC,AUDIO AMPLIFIER,SINGLE,BGA,8PIN,PLASTIC
LM4865M	NSC	获取价格	750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch
LM4865M/NOPB	TI	获取价格	LM4865 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch
LM4865MDC	NSC	获取价格	IC 1 CHANNEL(S), VOLUME CONTROL CIRCUIT, UUC, DIE, Audio Control IC
LM4865MM	NSC	获取价格	750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch
LM4865MM/NOPB	TI	获取价格	LM4865 750 mW Audio Power Amplifier with DC Volume Control and Headphone Switch