Texas Instruments

LM4868MT/NOPB

LM4868MT/NOPB Description

The LM4868MT/NOPB is a high-performance, Class AB audio amplifier from Texas Instruments, part of the renowned Boomer® series. This integrated circuit (IC) is designed to deliver robust audio performance in a compact 20-TSSOP package, making it ideal for a variety of consumer and professional audio applications. The LM4868MT/NOPB features a maximum output power of 3W per channel at a 3Ω load, and 208mW per channel at a 16Ω load, providing ample power for driving various types of speakers and audio systems.

With a supply voltage range of 2V to 5.5V, the LM4868MT/NOPB offers flexibility in power supply options, ensuring compatibility with a wide range of devices. This amplifier is designed for surface-mount applications, making it suitable for modern, space-constrained electronics designs. Despite its small form factor, the LM4868MT/NOPB is equipped with advanced features such as depopulation protection, an input multiplexer, shutdown functionality, and thermal protection, ensuring reliable operation and protection against common failure modes.

LM4868MT/NOPB Features

• High Output Power: Delivers up to 3W per channel at a 3Ω load and 208mW per channel at a 16Ω load, providing strong audio output.
• Flexible Supply Voltage: Operates within a wide voltage range of 2V to 5.5V, accommodating various power supply configurations.
• Advanced Protection Features: Includes depopulation protection to prevent unwanted sounds during power-up and shutdown, an input multiplexer for versatile signal routing, and thermal protection to safeguard the device from overheating.
• Surface-Mount Design: Optimized for surface-mount technology (SMT), ensuring ease of integration into modern electronics assemblies.
• Compliance and Safety: Complies with REACH and ROHS3 standards, ensuring environmental safety and regulatory compliance.
• Moisture Sensitivity Level: MSL 1 (Unlimited), indicating high resistance to moisture, which is crucial for reliable performance in various environmental conditions.

LM4868MT/NOPB Applications

The LM4868MT/NOPB is well-suited for a range of applications where high-quality audio amplification is required. Its compact size and robust performance make it ideal for portable audio devices, such as smartphones, tablets, and portable speakers. Additionally, the LM4868MT/NOPB can be used in home audio systems, automotive audio applications, and professional audio equipment where space is limited but audio quality is paramount.

The input multiplexer and shutdown features make this IC particularly useful in applications where multiple audio sources need to be managed efficiently, and power consumption needs to be minimized during periods of inactivity. The thermal protection ensures that the device can operate reliably even under high load conditions, making it suitable for demanding audio applications.

Conclusion of LM4868MT/NOPB

The LM4868MT/NOPB from Texas Instruments is a versatile and high-performance Class AB audio amplifier that offers a balance of power, flexibility, and protection features. While it is currently marked as obsolete, its technical specifications and advanced features make it a reliable choice for applications requiring robust audio amplification in a compact form factor. For engineers and designers looking for a reliable and feature-rich audio amplifier, the LM4868MT/NOPB remains a compelling option, especially in legacy systems or applications where its unique features and performance benefits are highly valued.