Texas Instruments

LM4991LDX/NOPB

LM4991LDX/NOPB Description

The LM4991LDX/NOPB is a high-performance, mono Class AB audio amplifier from Texas Instruments, part of the renowned Boomer® series. This amplifier is designed to deliver a maximum output power of 3W into a 3Ω load, making it ideal for applications requiring high audio fidelity and power efficiency. The LM4991LDX/NOPB operates within a wide supply voltage range of 2.2V to 5.5V, ensuring compatibility with various power supply configurations.

This amplifier is housed in an 8-pin WSON package, which is both compact and thermally efficient, suitable for surface mount applications. The device is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It is available in tape and reel (TR) packaging, facilitating efficient manufacturing processes.

LM4991LDX/NOPB Features

• High Output Power: Delivers up to 3W into a 3Ω load, ensuring robust audio performance.
• Wide Supply Voltage Range: Operates from 2.2V to 5.5V, providing flexibility in power supply options.
• Thermal Protection: Integrated thermal protection ensures reliable operation under varying load conditions.
• Depop and Shutdown Features: These features help reduce power consumption and prevent unwanted noise during startup and shutdown.
• Surface Mount Compatibility: The 8-pin WSON package is designed for surface mount technology, making it suitable for modern PCB designs.
• Environmental Compliance: REACH unaffected and RoHS3 compliant, ensuring the product meets global environmental standards.
• Moisture Sensitivity Level: MSL 3 (168 Hours) ensures the device remains stable in various environmental conditions.

LM4991LDX/NOPB Applications

The LM4991LDX/NOPB is well-suited for a variety of applications where high-quality audio output and power efficiency are critical. Its compact size and high performance make it ideal for portable audio devices, such as smartphones, tablets, and portable speakers. The amplifier's wide supply voltage range and thermal protection features also make it suitable for automotive audio systems and other applications where power supply conditions may vary.

Conclusion of LM4991LDX/NOPB

The LM4991LDX/NOPB stands out as a versatile and high-performance audio amplifier, offering significant advantages over similar models. Its ability to deliver 3W of power into a 3Ω load, combined with a wide supply voltage range and integrated thermal protection, ensures reliable and efficient operation. The device's compact 8-pin WSON package and surface mount compatibility make it easy to integrate into modern electronic designs. With features such as depop and shutdown, the LM4991LDX/NOPB not only meets but exceeds industry standards for audio amplifiers, making it an ideal choice for a wide range of applications.