LM4991MAX/NOPB Audio Amplifiers 3.0-W, mono, analog input Class-AB audio amplifier 8-SOIC -40 to 85

Short Description:

Manufacturers: Texas Instruments 
Product Category: Audio Amplifiers
Data Sheet: LM4991MAX/NOPB
Description:IC AMP CLASS AB MONO 1.5W 8SOIC
RoHS status: RoHS Compliant


Product Detail

Features

APPLICATIONS

Product Tags

♠ Product Description

Product Attribute

Attribute Value

Manufacturer:

Texas Instruments

Product Category:

Audio Amplifiers

RoHS:

 Details

Series:

LM4991

Product:

Audio Amplifiers

Class:

Class-AB

Output Power:

3 W

Mounting Style:

SMD/SMT

Type:

1-Channel Mono

Package/Case:

SOIC-8

Audio - Load Impedance:

3 Ohms

THD plus Noise:

0.2 %

Supply Voltage - Max:

5.5 V

Supply Voltage - Min:

2.2 V

Minimum Operating Temperature:

- 40 C

Maximum Operating Temperature:

+ 85 C

Packaging:

Reel

Packaging:

Cut Tape

Packaging:

MouseReel

Brand:

Texas Instruments

Number of Channels:

1 Channel

Operating Supply Voltage:

2.2 V to 5.5 V

Product Type:

Audio Amplifiers

PSRR - Power Supply Rejection Ratio:

64 dB

Factory Pack Quantity:

2500

Subcategory:

Audio ICs

Unit Weight:

220 mg

♠ LM4991 3W Audio Power Amplifier with Shutdown Mode

The LM4991 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V power supply (see Note below). To conserve power in portable applications, the LM4991's micropower shutdown mode (ISD = 0.1µA,typ) is activated when VDD is applied to the SHUTDOWN pin.

Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external components and operate on low supply voltages from 2.2V to 5.5V.Since the LM4991 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low-power portable systems that require minimum volume and weight.

Additional LM4991 features include thermal shutdown protection, unity-gain stability, and external gain set.

 


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  • • Available in Space-Saving WSON and SOIC  Packages

    • Ultra Low Current Shutdown Mode

    • Can Drive Capacitive Loads up to 500pF

    • Improved Click and Pop Circuitry Reduces Noises During Turn-On and Turn-Off  Transitions

    • 2.2 – 5.5V Operation

    • No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors or Gain-Setting Resistors Required

    • Unity-Gain Stable

    • Wireless and Cellular Handsets

    • PDAs

    • Portable Computers

    • Desktop Computers

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