Product Overview: Texas Instruments LM4917SDX

The LM4917SDX from Texas Instruments is a compact and efficient audio power amplifier that is ideal for portable applications where space and power consumption are critical considerations. This high-performance component is designed to deliver quality sound amplification with minimal distortion and noise.

Key Features

• Output Power: The LM4917SDX provides an output power of 1.1W (typical) when driving a 8Ω load with a 5V power supply, making it suitable for a range of audio applications.
• Boomer Audio Power Amplifier: As part of the Boomer series, this device is designed to enhance the sound quality of portable devices such as mobile phones, tablets, and laptops.
• Efficiency: The amplifier features a high-efficiency Class AB output stage, which ensures extended battery life in portable applications.
• Shutdown Mode: It includes a shutdown mode that reduces power consumption when the amplifier is not in use, further conserving energy and extending battery life.
• Surface-Mount Package: The LM4917SDX is available in a space-saving, surface-mount, LLP package, which is ideal for compact circuit board layouts.

Applications

The LM4917SDX is versatile and can be used in a wide range of audio amplification scenarios. It is particularly well-suited for portable electronic devices, such as:

• Mobile Phones
• Tablets
• Laptops and Notebooks
• Portable Media Players
• Handheld Gaming Devices

Technical Specifications

With a low THD+N (Total Harmonic Distortion plus Noise) of 0.4% (typical) at 1kHz and a PSRR (Power Supply Rejection Ratio) of 70dB at 217Hz, the LM4917SDX ensures a clear audio output free from power supply fluctuations. The device operates over a wide supply voltage range from 2.7V to 5.5V, accommodating different power requirements.

Quality and Reliability

Texas Instruments is known for its commitment to quality and the LM4917SDX is no exception. This product is manufactured to meet high standards of performance and reliability, ensuring customer satisfaction and trust in its use in consumer electronics.