LM4864

更新时间： 2024-11-19 11:06:47

品牌	Logo	应用领域
德州仪器 - TI		放大器消费电路音频放大器视频放大器
页数	文件大小	规格书
24页	1695K
描述
725mW 单声道、模拟输入 AB 类音频放大器

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LM4864 数据手册

LM4864

www.ti.com

SNAS109F –SEPTEMBER 1999–REVISED MAY 2013

LM4864

725mW Audio Power Amplifier with Shutdown

Mode

Check for Samples: LM4864

FEATURES

DESCRIPTION

(1)

The LM4864 is a bridged audio power amplifier

capable of delivering 725mW of continuous average

power into an 8Ω load with 1% THD+N from a 5V

power supply.

•

VSSOP, SOIC, PDIP , and WSON Packaging

•

No Output Coupling Capacitors, Bootstrap

Capacitors, or Snubber Circuits are Necessary

•

Thermal Shutdown Protection Circuitry

Unity-Gain Stable

Boomer^®audio power amplifiers were designed

specifically to provide high quality output power from

a low supply voltage while requiring a minimal

amount of external components. Since the LM4864

does not require output coupling capacitors, bootstrap

capacitors or snubber networks, it is optimally suited

for low-power portable applications.

External Gain Configuration Capability

APPLICATIONS

•

Cellular phones

Personal computers

General purpose audio

The LM4864 features an externally controlled, low

power consumption shutdown mode, and thermal

shutdown protection.

KEY SPECIFICATIONS

The closed loop response of the unity-gain stable

LM4864 can be configured by external gain-setting

resistors. The device is available in multiple package

types to suit various applications.

•

P_Oat 1% THD+N with V_DD= 5V, 1kHz

–

LM4864LD, 4Ω load 625 mW (typ)

LM4864LD, 8Ω load 725 mW (typ)

LM4864M & LM4864N⁽¹⁾, 8Ω load 675 mW

(typ)

–

LM4864MM, 8Ω load ⁽²⁾300 mW (typ)

LM4864, 16Ω load 550 mW (typ)

Shutdown current 0.7 µA (typ)

(1) Not recommended for new designs. Contact TI Audio

Marketing.

(2) The DGK0008BA package is thermally limited to 595 mW of

power dissipation at room temperature. Referring to Figure 21

in Typical Performance Characteristics, the power dissipation

limitation for the package occurs at 300 mW of output power.

This package limitation is based on 25°C ambient

temperature and θ_JA= 210°C. For higher output power

possibilities refer to POWER DISSIPATION.

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 registered 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.

12 3 4 5 6 7...24

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与LM4864相关器件

型号	品牌	获取价格	描述	数据表
LM4864LD	ROCHESTER	获取价格	0.725W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10, LLP-10
LM4864M	NSC	获取价格	300 mW Audio Power Amplifier with Shutdown Mode
LM4864M/NOPB	TI	获取价格	725mW Audio Power Amplifier with Shutdown Mode
LM4864MDC	TI	获取价格	IC 0.55 W, 1 CHANNEL, AUDIO AMPLIFIER, UUC13, DIE, Audio/Video Amplifier
LM4864MM	TI	获取价格	725mW Audio Power Amplifier with Shutdown Mode
LM4864MM	NSC	获取价格	300 mW Audio Power Amplifier with Shutdown Mode
LM4864MM	ROCHESTER	获取价格	0.55W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8, 0.118 INCH, MSOP-8
LM4864MM/NOPB	TI	获取价格	725mW Audio Power Amplifier with Shutdown Mode
LM4864MMX/NOPB	TI	获取价格	725mW Audio Power Amplifier with Shutdown Mode
LM4864MX	TI	获取价格	725mW Audio Power Amplifier with Shutdown Mode

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