Datasheet > LM4868MTX

LM4868MTX

更新时间： 2024-01-21 05:32:21

品牌	Logo	应用领域
德州仪器 - TI		放大器光电二极管商用集成电路
页数	文件大小	规格书
28页	792K
描述
1.5W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, 4.40 MM, PLASTIC, TSSOP-20

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LM4868MTX 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TSSOP, TSSOP20,.25	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.92	标称带宽：	20 kHz
商用集成电路类型：	AUDIO AMPLIFIER	JESD-30 代码：	R-PDSO-G20
JESD-609代码：	e0	长度：	6.5 mm
湿度敏感等级：	1	信道数量：	2
功能数量：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
标称输出功率：	1.5 W	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP20,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	1.2 mm
子类别：	Audio/Video Amplifiers	最大压摆率：	15 mA
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	2 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	TIN LEAD	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	4.4 mm
Base Number Matches：	1

LM4868MTX 数据手册

August 2002

LM4868

Output-Transient-Free Dual 2.1W Audio Amplifier Plus

No Coupling Capacitor Stereo Headphone Function

General Description

Key Specifications

n P_Oat 1% THD+N

The LM4868 is a dual bridge-connected audio power ampli-

fier which, when connected to a 5V supply, will deliver 2.1W

to a 4Ω load (Note 1) or 2.4W to a 3Ω load (Note 2) with less

than 1.0% THD+N. The LM4868 uses advanced, latest gen-

eration circuitry to eliminate all traces of clicks and pops

when the supply voltage is first applied. The amplifier has a

headphone-amplifier-select input pin. It is used to switch the

amplifiers from bridge to single-ended mode for driving

headphones. A new circuit topology eliminates headphone

output coupling capacitors (patent pending). A MUX control

pin allows selection between the two sets of stereo input

signals. The MUX control can also be used to select be-

tween two different customer-specified closed-loop re-

sponses.

LM4868LQ, 3Ω load

LM4868LQ, 4Ω load

LM4868MTE, 4Ω

LM4868MT, 8Ω

2.4W (typ)

2.1W (typ)

1.9W (typ)

1.1W (typ)

n Single-ended mode - THD+N at 75mW into 32Ω

(max)

n Shutdown current

0.5%

0.7µA (typ)

Features

n Advanced “click and pop” suppression circuitry

n Eliminates headphone amplifier output coupling

capacitors (patent pending)

Boomer audio power amplifiers are designed specifically to

provide high quality output power from a surface mount

package and require few external components. To simplify

audio system design, the LM4868 combines dual bridge

speaker amplifiers and stereo headphone amplifiers in one

package.

n Stereo headphone amplifier mode

n Input mux control and two separate inputs per channel

n Thermal shutdown protection circuitry

n LLP, TSSOP, and exposed-DAP TSSOP packaging

available

The LM4868 features an externally controlled power-saving

micropower shutdown mode, a stereo headphone amplifier

mode, and thermal shutdown protection.

Note 1: An LM4868LQ or LM4868MTE that has been properly mounted to

a circuit board will deliver 2.1W into 4Ω. The Mux control can also be used to

select two different closed-loop responses. LM4868MT will deliver 1.1W into

8Ω. See the Application Information sections for further information concern-

ing the LM4868LQ and the LM4868MT.

Applications

n Multimedia monitors

n Portable and desktop computers

n Portable audio systems

Note 2: An LM4868LQ or LM4868MTE that has been properly mounted to a

circuit board and forced-air cooled will deliver 2.4W into 3Ω.

Connection Diagrams

20026758

Top View

Order Number LM4868MT, LM4868MTE

See NS Package Number MTC20 for TSSOP

See NS Package Number MXA20A for Exposed-DAP TSSOP

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

DS200267

www.national.com

12 3 4 5 6 7...28

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与LM4868MTX相关器件

型号	品牌	描述	获取价格	数据表
LM4868MTX/NOPB	TI	1.5W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, 4.40 MM, PLASTIC, TSSOP-20	获取价格
LM4869	NSC	1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdo	获取价格
LM4869MH	NSC	1.9W Differential Input, BTL Output Stereo Audio Amplifier with Selectable Gain and Shutdo	获取价格
LM4869MHX/NOPB	TI	2.6W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20, EXPOSED PAD, TSSOP-20	获取价格
LM4870	NSC	1.1W Audio Power Amplifier with Shutdown Mode	获取价格
LM4870M	NSC	1.1W Audio Power Amplifier with Shutdown Mode	获取价格

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