LM4960

更新时间： 2024-09-20 23:16:47

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
12页	346K
描述
Piezoelectric Speaker Driver

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数据手册

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LM4960 数据手册

October 2004

LM4960

Piezoelectric Speaker Driver

General Description

The LM4960 utilizes a switching regulator to drive a dual

audio power amplifier. It delivers 24V_P-Pmono-BTL to a

ceramic speaker with less than 1.0% THD+N while operating

on a 3.0V power supply.

Key Specifications

n V_OUTV_DD= 3.0 THD+N ≤ 1%

24V_P-P(typ)

3.0 to 7V

1.6MHz (typ)

n Power supply range

n Switching Frequency

The LM4960’s switching regulator is a current-mode boost

converter operating at a fixed frequency of 1.6MHz.

Features

n Stereo BTL amplifier

Boomer audio power amplifiers were designed specifically to

provide high quality output power with a minimal amount of

external components. The LM4960 does not require output

coupling capacitors or bootstrap capacitors, and therefore is

ideally suited for mobile phone and other low voltage appli-

cations where minimal power consumption is a primary re-

quirement.

n Low current shutdown mode

n "Click and pop" suppression circuitry

n Low Quiescent current

n Unity-gain stable audio amplifiers

n External gain configuration capability

n Thermal shutdown protection circuitry

n Wide input voltage range (3.0V - 7V)

n 1.6MHz switching frequency

The LM4960 features a low-power consumption externally

controlled micropower shutdown mode. Additionally, the

LM4960 features and internal thermal shutdown protection

mechanism along with a short circuit protection.

Applications

n Mobile phone

n PDA’s

The LM4960 is unity-gain stable and can be configured by

external gain-setting resistors.

Connection Diagram

LM4960SQ

20076582

Top View

Order Number LM4960SQ

See NS Package Number

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

DS200765

www.national.com

12 3 4 5 6 7...12

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与LM4960相关器件

型号	品牌	获取价格	描述	数据表
LM4960SQ	NSC	获取价格	Piezoelectric Speaker Driver
LM4960SQ/NOPB	TI	获取价格	Piezoelectric Speaker Driver 28-WQFN
LM4960SQX	NSC	获取价格	IC 1 CHANNEL, AUDIO AMPLIFIER, PQCC28, PLASTIC, LLP-28, Audio/Video Amplifier
LM4960SQX	TI	获取价格	1 CHANNEL, AUDIO AMPLIFIER, PQCC28, PLASTIC, LLP-28
LM4961	NSC	获取价格	Ceramic Speaker Driver
LM4961LQ	NSC	获取价格	Ceramic Speaker Driver
LM4961LQX	TI	获取价格	IC,AUDIO AMPLIFIER,SINGLE,LLCC,28PIN,PLASTIC
LM4962	NSC	获取价格	Ceramic Speaker Driver
LM4962TL	NSC	获取价格	Ceramic Speaker Driver
LM4962TLX	NSC	获取价格	IC 1 CHANNEL, AUDIO AMPLIFIER, BGA20, 2 X 2.50 MM, BGA-20, Audio/Video Amplifier