The BD5426EFS is a single-channel, high-efficiency, class-D audio amplifier manufactured by Rohm Semiconductor. It is designed for portable audio devices and other applications where high power efficiency and low distortion are critical. This amplifier features a built-in filterless modulation scheme, which reduces external component count and simplifies design.

Applications

• Audio amplification in portable devices
• Speaker drivers in consumer electronics
• Headphone amplifiers
• Audio output stages in industrial equipment
• Sound reinforcement systems

Features

• High efficiency: Minimizes power consumption and extends battery life.
• Filterless modulation: Reduces external component count and simplifies design.
• Low distortion: Ensures high-quality audio reproduction.
• Overcurrent protection: Protects the amplifier and the speaker from damage.
• Thermal shutdown: Prevents overheating and ensures safe operation.

Benefits

• Extended battery life: Minimizes power consumption in portable devices.
• Simplified design: Reduces external component count and development time.
• High-quality audio: Delivers clear and accurate sound reproduction.
• Robust protection features: Prevents damage from overcurrent and overheating.
• Compact size: Enables smaller and more efficient designs.

Additional Details

The BD5426EFS operates on a supply voltage of 2.5V to 5.5V. It delivers up to 2.5W of output power into a 4Ω load. It is available in a small HTSOP-J8 package. The amplifier utilizes a spread-spectrum clocking scheme to minimize EMI emissions.