BD5424EFS is a 20W + 20W stereo class-D power amplifier IC developed by ROHM for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 91% (10W + 10W output with 8Ω load), which is the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 40W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system.
The BD5424EFS is a 20 W + 20 W stereo Class‑D power‑amplifier IC designed for low‑profile TV sets and other space‑saving applications. It offers high efficiency (91 %) and low heat generation without the need for an external radiator.
The document provides detailed specifications, absolute maximum ratings, operating conditions, pin assignments, package dimensions and ordering information, along with characteristic curves for output power, efficiency and noise.
| Minimum Load Resistance | 3.6 Ω |
|---|---|
| Supply Voltage (operating) | +10 V to +18 V |
| Total Harmonic Distortion (THD+N) | 0.1 % (1 W output) |
The minimum load resistance is 3.6 Ω.
The recommended supply voltage range is +10 V to +18 V.