BD78306UEFJ-ME2

Overview

The BD78306UEFJ-ME2 is a Class-AB monaural speaker amplifier designed for automotive applications. It features a fixed voltage gain of 6 dB and delivers a maximum output power of 1.6 W into an 8 Ω load. The device operates within a supply voltage range of 4 V to 5.5 V and supports differential input signals. Key electrical parameters include a standby current of 0.1 µA typ, a shutdown current of 0.1 µA typ, and a total harmonic distortion plus noise (THD+N) of 0.05%. It functions reliably across an operating temperature range from -40 °C to +105 °C.

Feature Summary

• Class-AB topology eliminates requirements for EMI noise management
• Integrated pop noise reduction function minimizes switching artifacts
• Low quiescent and shutdown currents reduce battery consumption
• HTSOP-J8 power package with thermal pad enables high output power

Applications

• Automotive audio systems
• Monaural speaker amplification
• Applications requiring frequent shutdown and active state transitions

Procurement Notes

Verify the specific suffix ME2 against official ROHM documentation to confirm manufacturing line designation and packaging details. Ensure compatibility with AEC-Q100 Grade 2 requirements for your target automotive environment. Cross-reference datasheet specifications with design models to confirm functional equivalence if substituting from related series members like the BD78306EFJ-M.

Selection Notes

Select this component for designs prioritizing low electromagnetic interference without complex filtering. The HTSOP-J8 package offers a compact solution for high-power output in constrained spaces. Consider the 6 dB fixed gain and differential input configuration when designing the preceding signal stage. Verify that the minimum 4 Ω load requirement aligns with the speaker impedance in the final application.

Part Context

This device belongs to the BD783xxEFJ-M series of automotive Class-AB amplifiers. It shares identical electrical characteristics with the BD78306EFJ-M but utilizes a different production line to improve efficiency. Both variants are FS supportive and qualified under AEC-Q100 Grade 2 standards. The series includes other models with varying voltage gains ranging from 6 dB to 26 dB.

Replacement Considerations

The BD78306EFJ-M is electrically equivalent and serves as a direct substitute. Other members of the BD783xxEFJ-M series may be used if different voltage gains are acceptable.