The BD5423MUV is a 17W + 17W stereo D-class power amplifier IC developed for space-saving and low-heat 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 90% (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 34W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system.
The BD5423MUV is a 17W + 17W stereo class‑D power amplifier IC designed for low‑profile TV sets and other compact audio applications. It offers high efficiency (90 %), low heat generation, and a range of built‑in protection features such as over‑temperature, VCC/GND short, reduced‑voltage, and DC‑to‑speaker protection.
The document provides full electrical specifications, pin assignments, characteristic curves, and ordering information. It includes supply voltage limits, load resistance ranges, output power ratings, THD+N values, and thermal specifications, as well as recommended PCB layouts and packaging details.
| Output Power (stereo) | 17 W + 17 W |
|---|---|
| Efficiency | 90 % |
| Supply Voltage | +10 V to +16.5 V |
| Load Resistance | 4 Ω ~ 16 Ω |
| Maximum Output Power (RL=40 Ω) | 17 W |
| Maximum Junction Temperature | +150 °C |
| Operating Temperature Range | -40 °C to +85 °C |
The device operates with a supply voltage from +10 V to +16.5 V.
It includes built‑in protection against high temperature, VCC short, GND short, reduced voltage, and DC voltage applied to the speaker.
The amplifier achieves a high efficiency of about 90 %.