BD5469GUL-E2

Overview

The BD5469GUL-E2 is a monaural Class-D speaker amplifier manufactured by ROHM Semiconductor. It operates on a single power supply ranging from 2.5 V to 5.5 V and delivers up to 900 mW of output power. The device features an integrated Automatic Level Control (ALC) function with a release time of 262 ms/dB to reduce clipping noise. It utilizes analog differential input and provides a fixed gain of 13 dB. The unit consumes 3 mA during operation and supports shutdown modes with minimal standby current. It is housed in a compact VCSP50L1-9 package suitable for surface mount applications.

Feature Summary

• Integrated Automatic Level Control (ALC) function reduces waveform distortion and protects speakers from excessive output levels.
• Class-D architecture enables high efficiency and low power consumption, making it suitable for battery-driven mobile devices.
• Supports rapid startup with reduced pop-noise, facilitating repeated transitions between shutdown and active states.
• Requires only three external components to form the amplifier circuit without needing LC filters at the speaker output.

Applications

• Mobile phones
• Portable electronic devices
• Mobile audio products

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm compliance with current environmental standards and pinout configurations. Ensure that the selected package variant matches the intended PCB footprint requirements. Cross-reference the part number with official ROHM databases to validate availability status and any potential design-in restrictions or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring automatic level control to prevent audio clipping and protect connected speakers. It is appropriate for applications where space is limited due to its wafer-level CSP packaging. Consider the 13 dB fixed gain and 2.5 V to 5.5 V operating range to ensure compatibility with the system's power supply and signal input levels. Verify thermal management needs based on the expected output power and ambient temperature conditions.

Part Context

This component belongs to the BD546xGUL series of low-voltage monaural Class-D speaker amplifiers developed by ROHM Semiconductor. Unlike the BD5460/61GUL variants which lack ALC functionality, the BD5469GUL integrates digital automatic level control. It shares pin compatibility with other members of the family, allowing for flexible design choices regarding gain settings and control features within mobile audio applications.

Replacement Considerations

The BD5460GUL-E2 serves as a pin-compatible alternative within the same series but lacks the integrated Automatic Level Control function. Designers should verify if the absence of ALC impacts the specific application requirements regarding output limiting and speaker protection before substituting.