Datasheet > LM4960

LM4960

更新时间： 2024-11-26 02:58:47

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描述
Piezoelectric Speaker Driver

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LM4960 数据手册

LM4960

www.ti.com

SNAS221C –OCTOBER 2004–REVISED MAY 2013

LM4960

Piezoelectric Speaker Driver

Check for Samples: LM4960

FEATURES

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.

•

Low Current Shutdown Mode

•

"Click and Pop" Suppression Circuitry

Low Quiescent Current

Unity-Gain Stable Audio Amplifiers

External Gain Configuration Capability

Thermal Shutdown Protection Circuitry

Wide Input Voltage Range (3.0V - 7V)

1.6MHz Switching Frequency

The LM4960's switching regulator is a current-mode

boost converter operating at a fixed frequency of

1.6MHz.

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 applications

where minimal power consumption is a primary

requirement.

APPLICATIONS

•

Mobile Phone

PDA's

KEY SPECIFICATIONS

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.

•

V_OUT@ V_DD= 3.0 THD+N ≤ 1%: 24 V_P-P(typ)

Power Supply Range: 3.0 to 7 V

Switching Frequency: 1.6 MHz (typ)

The LM4960 is unity-gain stable and can be

configured by external gain-setting resistors.

Connection Diagram

Figure 1. 28-Pin WQFN (Top View)

See RSG0028A Package

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Boomer is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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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