BD5426EFS-E2

Overview

The BD5426EFS-E2 is a Class-D audio amplifier manufactured by ROHM Semiconductor, designed for stereo speaker applications. It delivers 10 W of output power per channel into an 8-ohm load with a single power supply voltage ranging from 10 V to 16.5 V. The device features a bridge output configuration and operates within a temperature range of -40°C to +85°C. Key electrical specifications include a fixed gain of 28 dB, a total harmonic distortion plus noise (THD+N) of 0.1%, and a quiescent current of 25 mA. It is housed in a 44-pin HTSSOP package with exposed pad.

Feature Summary

• Class-D topology providing high efficiency for stereo audio amplification
• Integrated protection mechanisms including thermal shutdown and short-circuit protection
• Supports analog input signals with a fixed internal gain structure
• Includes pop-and-click suppression circuitry to minimize audible transients during power-up and power-down

Applications

• Stereo speaker amplification in automotive infotainment systems
• Multi-channel audio processing units requiring efficient power delivery
• Portable audio devices operating on single-supply battery voltages

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest documentation to confirm compliance with RoHS directives and material declarations. Ensure the ordering part number matches the required HTSSOP-44 package variant. Cross-reference the datasheet revision date to validate all electrical parameters and pin configurations before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel Class-D solution is required for 8-ohm loads at 10W per channel. The 10V to 16.5V supply range suits standard automotive and industrial single-rail systems. Consider the 44-pin HTSSOP footprint for PCB layout constraints. Verify that the 28dB fixed gain aligns with the upstream signal source levels without requiring additional external amplification stages.

Part Context

This device belongs to the BD54 series of audio amplifiers from ROHM Semiconductor. The series focuses on high-efficiency Class-D architectures suitable for demanding audio environments. The BD5426EFS-E2 specifically utilizes the HTSSOP-44 package, distinguishing it from other series members that may use QFN or smaller surface-mount packages while maintaining similar core performance characteristics.

Replacement Considerations

The BD5426MUV-E2 serves as a functional alternative within the same product family. Note that the MUV variant utilizes a QFN-48 package and differential output configuration, which differs from the EFS-E2's HTSSOP-44 and bridge output. Verify pinout compatibility and thermal management requirements before substituting.