参数资料
| 型号： | BM5446EFV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC AMP SPEAKER W/DSP HTSSOP-B54 |
| 标准包装： | 1,500 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 10W x 2 @ 8 欧姆 |
| 电源电压： | 10 V ~ 26 V |
| 特点： | 消除爆音，短路和热保护 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | * |
| 封装/外壳： | 54-VSSOP（0.295"，7.50mm 宽） |
| 包装： | * |
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www.rohm.com
2010.05 - Rev.B
2010 ROHM Co., Ltd. All rights reserved.
Middle Power Class-D Speaker Amplifiers
Class-D Speaker Amplifier
for Digital Input with Built-in DSP
BM5446EFV
●Description
BM5446EFV is a Class D Speaker Amplifier with built-in DSP (Digital Sound Processor) designed for Flat-panel TVs in
particular for space-saving and low-power consumption, delivers an output power of 20W+20W. This 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 can achieve high
efficiency of 86% (10W+10W output with 8
load). In addition, the IC is packaged in a compact reverse heat radiation type
power package to achieve low power consumption and low heat generation and eliminates necessity of external heat-sink
up to a total output power of 40W. This product satisfies both needs for drastic downsizing, low-profile structures and many
function, high quality playback of sound system.
●Features
1) This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs.
2) This IC has two input systems of digital audio interface.
(I
2S/LJ/RJ format, LRCLK: 32 kHz/ 44.1kHz / 48kHz, SYS_CLK: 256fs / 512fs,
BCLK: 48fs / 64fs, SDATA: 16 / 20 / 24bit)
3) With wide range of power supply voltage, it is possible to operate with single power supply. (Vcc = 10~26V)
4) With high efficiency and low heat dissipation contributing to miniaturization, slim design, and also power saving of the
system.
5) S/N of the system can be optimized by adjusting the gain selection in 16 steps. (20~35dB,1dB/step)
6) With built-in feedback circuitry at the output, prevents the decrease in sound quality due to change in power supply
voltage. In addition, low noise and low distortion are achieved.
7) With a built-in DAC provides best stereo-output for headphone function. As a result, the selection of output of the
digital input in two systems is possible.
8) It has additional S/PDIF output for the LINE output usage.
9) Eliminates pop-noise generated during the power supply on/off. High quality muting performance is realized by using
the soft-muting technology.
10) This IC is built-in with various protection functions for highly reliability design.
(High temperature protection, Under voltage protection, Output short protection, Output DC-Voltage protection and
Clock stop protection).
●Applications
Flat Panel TVs (LCD, Plasma), Home Audio, Desktop PC, Amusement equipments, Electronic Music equipments, etc.
No.10075EBT13
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