LM4902LD/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Low voltage audio power amplifier - High output power capability - Wide supply voltage range - Thermal shutdown protection - Short-circuit protection

Package: DIP-8 (Dual In-Line Package)

Essence: The LM4902LD/NOPB is a low voltage audio power amplifier IC designed for use in portable devices such as mobile phones, tablets, and portable media players.

Packaging/Quantity: The LM4902LD/NOPB is typically sold in reels or tubes containing 2500 units per package.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.1W
• Total Harmonic Distortion (THD): 0.2% (typical)
• Quiescent Current: 3.6mA (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4902LD/NOPB has the following pin configuration:

___________ | | NC |1 8| VCC IN- |2 7| SHUTDOWN IN+ |3 6| OUT GND |4 5| BYPASS |___________|

Functional Features

• Low voltage operation allows for direct battery connection.
• High output power capability enables driving small speakers or headphones.
• Wide supply voltage range provides flexibility in various applications.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short-circuit protection safeguards the IC from damage during output shorting.

Advantages and Disadvantages

Advantages: - Suitable for low voltage portable applications. - Provides high-quality audio amplification. - Offers protection features for reliable operation.

Disadvantages: - Limited output power compared to higher voltage amplifiers. - May require additional components for specific applications.

Working Principles

The LM4902LD/NOPB operates as a class AB audio amplifier. It amplifies the input audio signal and drives the connected speaker or headphone. The IC utilizes a low voltage supply, making it suitable for portable devices. It incorporates thermal shutdown and short-circuit protection to ensure safe operation.

Detailed Application Field Plans

The LM4902LD/NOPB is commonly used in various portable audio applications, including: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Gaming devices

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the LM4902LD/NOPB are: - LM4861LD/NOPB - TPA2005D1PWPR - MAX9814ETD+

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

In conclusion, the LM4902LD/NOPB is a low voltage audio power amplifier IC designed for portable audio applications. It offers high-quality audio amplification, protection features, and flexibility in various applications. With its compact DIP-8 package, it is widely used in mobile phones, tablets, and portable media players. Alternative models such as the LM4861LD/NOPB, TPA2005D1PWPR, and MAX9814ETD+ can also be considered for similar applications.