Texas Instruments

LM4651N/NOPB  

Audio Amplifiers

LM4651N/NOPB Description

The LM4651N/NOPB is a high-performance, Class D mono audio amplifier designed by Texas Instruments. It is part of the Overture™ series, known for delivering exceptional audio quality and efficiency. This amplifier is capable of delivering a maximum output power of 170W into a 4-ohm load, making it ideal for applications requiring high power output. The LM4651N/NOPB operates from a supply voltage range of ±22V to ±44V, offering flexibility in power supply requirements.

The LM4651N/NOPB is housed in a through-hole package, specifically a 28DIP tube, which ensures robust mechanical stability and ease of integration into various electronic systems. Despite its high power capabilities, this amplifier maintains a low power consumption profile, contributing to its efficiency and suitability for applications where energy efficiency is paramount.

LM4651N/NOPB Features

The LM4651N/NOPB features several unique attributes that set it apart from other audio amplifiers in its class. Key features include:

• Depop, Shutdown, and Standby Modes: These features allow for efficient power management and reduced noise during power cycling, ensuring a smooth and quiet transition between operational states.
• Wide Supply Voltage Range: The ±22V to ±44V supply voltage range provides flexibility in power supply design, accommodating a variety of power sources.
• High Output Power: Delivering up to 170W into a 4-ohm load, the LM4651N/NOPB is well-suited for high-fidelity audio applications.
• Class D Topology: This design ensures high efficiency and low heat dissipation, making it ideal for compact and high-performance audio systems.
• Compliance and Safety: The LM4651N/NOPB is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards.
• Low Moisture Sensitivity Level: With an MSL of 1 (unlimited), the amplifier is highly resistant to moisture, enhancing its reliability in various environmental conditions.

LM4651N/NOPB Applications

The LM4651N/NOPB is particularly well-suited for applications that demand high power output and efficiency. Specific use cases include:

• Professional Audio Systems: Ideal for high-fidelity audio applications such as professional sound systems, studio monitors, and live sound reinforcement.
• Automotive Audio: Its high power output and efficiency make it suitable for car audio systems, where space and power consumption are critical factors.
• Home Theater Systems: The LM4651N/NOPB can be used in home theater setups to deliver powerful and clear audio, enhancing the overall viewing experience.
• Industrial Audio Applications: Its robust design and compliance with environmental standards make it suitable for industrial applications where reliability and durability are essential.

Conclusion of LM4651N/NOPB

The LM4651N/NOPB is a versatile and high-performance Class D mono audio amplifier that offers significant benefits over similar models. Its wide supply voltage range, high output power, and advanced features such as depop, shutdown, and standby modes make it an excellent choice for a variety of applications. The amplifier's compliance with environmental and safety standards further enhances its appeal. Despite its obsolete status, the LM4651N/NOPB remains a reliable and efficient solution for high-power audio applications.

LM4651N/NOPB Documents

Download datasheets and manufacturer documentation for LM4651N/NOPB

Datasheets :

LM4651, LM4652