Datasheet
Middle Power Class-D Speaker Amplifier series
17W+17W
Full Digital Speaker Amplifier
with built-in DSP
BM28723AMUV
General Description
Features
BM28723AMUV is a 17W+17W Class D stereo Speaker
Amplifier with built-in DSP designed for TVs specifically
for space-saving and low-power consumption.
BM28723AMUV features BCD (Bipolar, CMOS, DMOS)
process technology to achieve high efficiency. In addition,
BM28723AMUV is packaged in a compact back surface
heatsink type power package to attain low power
consumption, low heat generation without external
heatsink. The package Max output power is only
17W+17W (When RL=8Ω) as compared to 20W+20W
(When RL=8Ω) Max output power of package with
external heat-sink.
Built-in DSP (Digital Sound Processor) for Audio
Signal Processing for TVs
12-Band/ch BQ, 3-Band DRC, Pre-Scaler, Channel
Mixer, Fine Master Volume, Hard Clipper, Level
Meter, etc.
Single Input System for Digital Audio Interface (No
Master Clock Required)
- I2S/LJ/RJ Format
- LRCLK: 32kHz/44.1kHz/48kHz
- BCLK: 32fs/48fs/64fs
- SDATA: 16bit/20bit/24bit
Single Output System for Digital Audio Interface
The product satisfies all needs for drastic downsizing,
low-profile structures and powerful high quality playback
of sound systems.
- I2S Format
- SDATA: 16bit/20bit/24bit
No Snubber Circuit Required (VCCP1, VCCP2≤22V)
because of Slew Rate Control
Output Feedback Circuit which prevents decrease of
sound quality caused by change of power supply
voltage, achieves low noise and low distortion, so no
large electrolytic-capacitors for VCC bypass is
required.
Key Specifications
Supply voltage range
(VCCP1, VCCP2
10V to 24V
17W+17W (Typ)
0.08[%] (Typ)
)
Speaker output power
(VCCP1, VCCP2=18V, RL=8Ω)
THD+N
Wide Range of Power Supply Input Voltage
The monaural output reduces the number of
external parts needed.
Applications
High Efficiency and Low Heat Dissipation allowing
Miniaturization, Slim Design, and also Power Saving
of the System
Eliminates pop-noise generated during the power
supply ON/OFF. High quality muting performance is
achieved using the soft-muting technology.
Built-in with Various Protection Functions for Highly
Reliability Design
TVs (LCD, OLED)
Home Audio
Desktop PC
Amusement Equipment
Electronic Music Equipment, etc.
Typical Application Circuit
- High Temperature Protection
- Under Voltage Protection
SP ch1
(Lch)
SP ch2
(Rch)
- Output Short Protection
- DC Voltage Protection for speaker
- Clock Stop Protection
Small Package, it reduces surface mount area
Package
VQFN032V5050
W(Typ) x D(Typ) x H(Max)
5.00mm x 5.00mm x 1.00mm
Digital
Audio
Source
μ -con
Figure 1. Typical Application Circuit
VQFN032V5050
〇Product structure: Silicon integrated circuit 〇This product has no designed protection against radioactive rays
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