The LM4946SQ is a Boomer® series high performance audio power amplifier capable of delivering 2.1W into a 4Ω load with less than 1% THD+N when powered by a 5V supply. This amplifier is designed specifically for portable applications where size and power consumption are critical. It features a low-power shutdown mode and an integrated volume control.

Applications

• Cellular phones
• PDAs
• MP3 players
• Portable gaming devices
• Laptop computers

Features

• 2.1W output power into 4Ω with 5V supply
• Low THD+N (1% typical)
• Integrated volume control
• Low power shutdown mode
• Short-circuit protection
• Thermal shutdown protection
• Available in a space-saving LLP package

Benefits

• High output power for loud and clear audio reproduction.
• Low distortion ensures high fidelity audio.
• Integrated volume control simplifies system design and reduces component count.
• Low power shutdown mode extends battery life in portable applications.
• Robust protection features prevent damage from short circuits and overheating.
• Small package size allows for use in space-constrained applications.

Additional Details

The LM4946SQ utilizes a filterless Class D architecture, which eliminates the need for bulky output filters, reducing board space and component cost. The integrated volume control provides precise adjustment of the audio output level. The low-power shutdown mode reduces current consumption to a minimum when the amplifier is not in use. The short-circuit and thermal shutdown protection features ensure reliable operation under fault conditions. The LLP (Leadless Leadframe Package) provides excellent thermal performance and allows for efficient heat dissipation. It's designed to deliver high-quality audio performance in portable devices.