BD5445EFV-E2

Overview

The BD5445EFV-E2 is an analog input, single-ended output Class-D speaker amplifier designed for flat-panel TVs and home audio. It delivers 17W per channel stereo output or 34W mono bridge-tied-load (BTL) output. The device operates on a supply voltage ranging from 10V to 27V with a minimum load impedance of 3.6Ω. It features four selectable voltage gains: 14dB, 20dB, 26dB, and 32dB. The IC achieves high efficiency up to 91% at 10W+10W output into an 8Ω load. It utilizes a compact reverse heat radiation HTSSOP-B28 package.

Feature Summary

• Employs Bipolar, CMOS, and DMOS (BCD) process technology to eliminate turn-on resistance in the output power stage and internal line resistances.
• Features master/slave synchronization capability for multi-channel configurations using external clock inputs.
• Includes soft-start and soft-mute functions to minimize pop noise during power-up and mute transitions.
• Integrates comprehensive protection circuits including high temperature, output short circuit, and under-voltage detection.

Applications

• Flat-panel televisions (LCD, Plasma)
• Home audio systems
• Desktop personal computers
• Amusement equipment
• Electronic music equipment

Procurement Notes

Verify component authenticity through authorized ROHM Semiconductor distributors. Confirm the specific E2 suffix matches project requirements as it denotes environmental compliance. Check current lifecycle status, as this model may be designated as Not Recommended for New Designs (NRND). Ensure proper handling procedures are followed due to moisture sensitivity classification.

Selection Notes

Select this amplifier when space-saving and low-power consumption are critical design constraints. It is suitable for applications requiring high-quality sound playback without external heatsinks up to 34W total output. Verify that the system supply voltage remains within the 10V to 27V operating range. Ensure the load impedance does not fall below the specified 3.6Ω minimum to maintain safe operation.

Part Context

This component belongs to the BD54 series of middle power Class-D speaker amplifiers manufactured by ROHM Semiconductor. It is specifically engineered for space-constrained consumer electronics where thermal management and efficiency are paramount. The HTSSOP-B28 package facilitates surface-mount assembly while providing adequate thermal dissipation characteristics for continuous operation.

Replacement Considerations

BD5444EFV