LM4992SD/NOPB

Product Overview

Category

The LM4992SD/NOPB belongs to the category of audio power amplifiers.

Use

It is used for amplifying audio signals in various electronic devices such as smartphones, tablets, and portable media players.

Characteristics

• High efficiency
• Low distortion
• Small package size
• Thermal shutdown protection

Package

The LM4992SD/NOPB comes in a small outline package (SOP) with exposed thermal pad for enhanced thermal performance.

Essence

The essence of LM4992SD/NOPB lies in its ability to deliver high-quality audio amplification in a compact and efficient package.

Packaging/Quantity

The LM4992SD/NOPB is typically available in reels containing 2500 units.

Specifications

• Output Power: 1.4W at 3Ω and 10% THD+N
• Efficiency: Up to 90%
• Operating Voltage Range: 2.5V to 5.5V
• Total Harmonic Distortion + Noise (THD+N): 0.1%
• Shutdown Current: 0.01μA (typical)

Detailed Pin Configuration

The LM4992SD/NOPB has a standard pin configuration with pins for power supply, input signal, output, and control functions. The detailed pin configuration can be found in the product datasheet.

Functional Features

• Short-Circuit and Thermal Protection
• Low Quiescent Current
• Differential Inputs for Noise Rejection
• Integrated Gain Select

Advantages and Disadvantages

Advantages

• High efficiency leading to longer battery life in portable devices
• Compact package size for space-constrained designs
• Low distortion for high-quality audio output

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Requires careful PCB layout for optimal performance

Working Principles

The LM4992SD/NOPB operates by amplifying the input audio signal using a class D amplifier architecture, which provides high efficiency and low distortion. It also incorporates protection features to ensure reliable operation under various conditions.

Detailed Application Field Plans

The LM4992SD/NOPB is well-suited for use in portable electronic devices where space and power efficiency are critical. It can be integrated into smartphones, tablets, portable media players, and other handheld devices to provide high-quality audio amplification.

Detailed and Complete Alternative Models

• TPA2012D2 from Texas Instruments
• MAX98306 from Maxim Integrated
• PAM8403 from Diodes Incorporated

These alternative models offer similar audio amplification capabilities and can be considered based on specific design requirements.

In conclusion, the LM4992SD/NOPB is a versatile audio power amplifier that offers high efficiency and compact size, making it ideal for a wide range of portable electronic devices. Its key features, specifications, and application field plans make it a valuable component in modern audio systems.

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