BD5634NUX-TR

Overview

The BD5634NUX-TR is a monaural Class-D speaker amplifier designed for mobile audio applications. It operates with an analog input and delivers up to 2.5W output power into a 4Ω load at 5V supply, or 0.85W into 8Ω at 3.6V. The device features a fixed gain of 6dB and requires only three external components due to the elimination of LC filters. It includes built-in pop-noise reduction, standby functionality, and protection circuits such as short-circuit protection (auto-recovery), thermal shutdown, and under-voltage lockout.

Feature Summary

• Class-D operation enables high efficiency and low power consumption suitable for battery-driven devices.
• LC filter-free design simplifies circuit configuration by requiring only three external components.
• Built-in pop-noise reduction circuit minimizes audible noise during startup and shutdown transitions.
• Integrated protection mechanisms include auto-recovering short-circuit protection and thermal shutdown.

Applications

• Mobile phone audio systems
• Portable electronic devices
• Battery-powered audio equipment

Procurement Notes

Verify the specific suffix and package variant against the manufacturer's current datasheet to ensure compatibility with your design requirements. Confirm that the component status aligns with your project lifecycle needs, as availability may vary. Ensure all electrical parameters meet your system specifications before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring high-efficiency audio amplification in space-constrained portable devices. Its ability to drive speakers without output LC filters reduces bill of materials cost and board area. Consider its fixed gain and analog input interface when designing the preceding signal processing stages.

Part Context

This part belongs to Rohm's series of analog input monaural Class-D speaker amplifiers. These devices are engineered for mobile and portable audio products, offering a balance of performance and simplicity. The series typically features low standby current and rapid start-up times, making them suitable for devices that frequently switch between active and standby modes.

Replacement Considerations

Consult official substitution lists for equivalent Class-D amplifiers with similar power output and package dimensions. Verify pin compatibility and electrical characteristics before replacing existing designs. Ensure any substitute component meets the same environmental and reliability standards required for your application.