The LM4665LD/NOPB is a high-quality audio amplifier integrated circuit (IC) designed and manufactured by Texas Instruments (TI). This compact, power-efficient device is well-suited for portable electronics where space and power consumption are at a premium. Its primary application is to provide a high-fidelity audio amplification solution for mobile phones, tablets, laptops, and other portable multimedia devices.

Key Features

• Output Power: The LM4665LD/NOPB delivers 1.4 Watts of continuous average power to an 8 Ohm load with 0.1% THD+N from a 5V power supply, making it powerful enough for most portable audio applications without compromising sound quality.
• Power Efficiency: The device features a high-efficiency Class D operation, which not only conserves power but also reduces the need for bulky heat sinks, thus saving space and weight in portable designs.
• Micro-Power Shutdown Mode: To further extend battery life, the LM4665LD/NOPB includes a micro-power shutdown mode feature with an ultra-low quiescent current which is ideal for battery-powered applications.
• Thermal Protection: The IC is also equipped with an advanced thermal protection scheme that prevents it from being damaged by overheating.

Specifications

• Supply Voltage Range: 2.4V - 5.5V
• External Gain Configuration Flexibility
• Surface-Mount, Leadless LLP Package
• RoHS Compliant
• Pop & Click Circuitry

Applications

The LM4665LD/NOPB is specifically designed for portable audio applications. It is commonly used in:

• Mobile Phones
• Portable Media Players
• Tablet Computers
• Laptop Computers
• Portable Gaming Devices

Quality and Reliability

As with all Texas Instruments products, the LM4665LD/NOPB is designed to meet the highest industry standards for quality and reliability. It is available in a leadless LLP package which ensures a compact footprint while offering a robust and reliable connection to the printed circuit board.