The BU21010MUV-E is a high-performance audio amplifier designed by Rohm Semiconductor. It is optimized for use in portable audio devices, such as smartphones, tablets, and portable music players, where space and power consumption are critical concerns. The amplifier delivers high-quality audio with low distortion and efficient power utilization.

Applications:

• Smartphones
• Tablets
• Portable music players
• Bluetooth speakers
• Gaming devices

Features:

• Output Power: 2.5W (typical) into 4Ω at 5V
• Operating Voltage: 2.5V to 5.5V
• Low THD+N: 0.02% (typical)
• High PSRR: 80dB (typical)
• Integrated pop & click suppression
• Short-circuit protection
• Overtemperature protection
• Shutdown mode with low current consumption
• Small VSON package

Benefits:

• High-Quality Audio: Delivers clear and crisp audio reproduction with minimal distortion, enhancing the listening experience.
• Efficient Power Consumption: Optimized for low power consumption, extending battery life in portable devices.
• Integrated Protection: Built-in short-circuit and overtemperature protection safeguards the amplifier and connected speakers from damage.
• Pop & Click Suppression: Minimizes unwanted noise during power-up and shutdown, ensuring a smooth and pleasant audio experience.
• Compact Size: The small VSON package allows for easy integration into space-constrained portable devices.

Additional Details:

The BU21010MUV-E is a Class-AB audio amplifier that provides a good balance between audio quality and power efficiency. It operates from a single power supply ranging from 2.5V to 5.5V. The high PSRR (Power Supply Rejection Ratio) ensures that noise from the power supply is effectively filtered out, resulting in a cleaner audio signal. The integrated pop & click suppression circuitry eliminates unwanted noise during power-up and shutdown, providing a more professional and user-friendly experience. Proper decoupling capacitors should be used to minimize noise and ensure stable operation. The amplifier is available in a small VSON package, making it suitable for compact portable devices.