Features | Specifications｜Basic Characteristics

ROHM has developed the BD5421EFS, a stereo power Class D amplifier LSI utilizing leading edge BiCMOS processes that minimizes output transistor ON-resistance and line resistance. Efficiency is 90% - the highest in the industry, and the package features a backside heat sink with high heat dissipation characteristics, enabling 34W (17W + 17W) output without an external heat sink, contributing to end-product miniaturization in high fidelity audio sets.

1. Top class efficiency (90% at V_CC=12V, 8Ω, 10W output)with low heat generation
2. 34W output without the need for external heat sink
3. Reduced popping noise during power ON/OFF, mute ON/OFF, and power interruption
4. Built-in high temperature, output high/low, and reduced voltage protection circuits
5. Onboard master/slave function enables synchronized operations when multiple units are used simultaneously
6. Gain and internal sampling frequency can be adjusted via external resistance
7. Industry's lowest EMI
8. Compact power package with backside heat sink for high thermal dissipation

The terminals of all ROHM's LSIs/discrete semiconductors/passive components are lead-free. ROHM's current lead-free products comply with RoHS Directive, ensuring worry-free use all over the world.
Applicable directive: WEEE*1/RoHS*2

WEEE*1 (Waste Electrical and Electronic Equipment)/RoHS*2 (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment)