ROHM BD5423MUV Data Sheet
Summary
This highly efficient Class-D stereo power amplifier IC is engineered for low-profile, space-saving audio applications, such as modern televisions and digital display systems. The manual provides comprehensive electrical specifications, performance ratings, and protection details needed by electronics designers and engineers. It enables the reliable creation of powerful, high-quality sound systems with minimal heat generation and maximum efficiency.
Page 1 Text Content
Middle Power Class-D Speaker Amplifiers
Analog Input / BTL Output Class-D Speaker Amplifier
BD5423MUV No.10075EBT03
●Description BD5423MUV is a 17W + 17W stereo class-D power amplifier IC, developed 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 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.
●Features 1) A high efficiency of 90% (10W + 10W output with 8Ω load), which is the highest grade in the industry and low heat-generation. 2) An output of 17W + 17W (12V, with 4Ω load) is allowed without an external heat radiator. 3) Driving a lowest rating load of 4Ω is allowed. 4) Pop noise upon turning power on/off and power interruption has been reduced. 5) High-quality audio muting is implemented by soft-switching technology. 6) An output power limiter function limits excessive output to speakers. 7) High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and GND shorting, against reduced-voltage, and against applying DC voltage to speaker. 8) A master/slave function allowing synchronization of multiple devices reduces beat noises. 9) Adjustment of internal PWM sampling clock frequencies (250k Hz to 400k Hz) allows easy protective measures against unwanted radio emission to AM radio band. 10) A compact back-surface heat radiation type power package is employed. VQFN048V7070 7.0mm × 7.0mm × 1.0mm, pitch 0.5mm
●Absolute maximum ratings A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability. The following values assume Ta =25℃. For latest values, refer to delivery specifications.
Parameter Symbol Ratings Unit Conditions
Pin 2, 14, 15, 22, 23, 38, 39, 46, 47
Supply voltage VCC +20 V
(Note 1, 2) (Note 3)
Power dissipation Pd 3.28
4.8 W (Note 4)
Input voltage for signal pin VIN -0.2 ～ +7.2 V Pin 6, 7 (Note 1)
Input voltage for control pin VCONT -0.2 ～ Vcc+0.2 V Pin 28, 32 (Note 1)
Input voltage for clock pin VOSC -0.2 ～ +7.2 V Pin 31 (Note 1)
Operating temperature range Topr -40 ～ +85 ℃
Storage temperature range Tstg -55 ～ +150 ℃
Maximum junction temperature Tjmax +150 ℃ (Note 1) A voltage that can be applied with reference to GND (pins 5, 18, 19, 42, and 43) (Note 2) Pd and Tjmax=150℃ must not be exceeded. (Note 3) 114.3mm × 76.2mm × 1.6mm FR4 2-layer glass epoxy board (Copper Area 5505mm2) installed. If used under Ta=25℃ or higher, reduce 26.2m W for increase of every 1℃. The board is provided with thermal via. (Note 4) 114.3mm × 76.2mm × 1.6mm FR4 4-layer glass epoxy board (Copper Area 5505mm2) installed. If used under Ta=25℃ or higher, reduce 38.4m W for increase of every 1℃. The board is provided with thermal via.
www.rohm.com 2010.05 - Rev.B
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Page Summary Contents For ROHM BD5423MUV Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 17 |
| File Size | 584.49 KB |
| Published | June 19, 2026 |
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Frequently Asked Questions
What load resistance can this amplifier drive?
It supports driving lowest ratings as low as 4Ω.
Does the amplifier have built-in protection features?
Yes, it includes circuits against high temperatures, VCC/GND shorting, reduced voltage, and DC voltage on speakers.
How is power-on pop noise addressed?
Soft-switching technology substantially reduces pop noise during power switching or interruption.
Can this amplifier synchronize multiple devices?
Yes, a master/slave function allows synchronization of multiple units to reduce beat noises.