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BM5446EFV

Description
Class-D Speaker Amplifier for Digital Input with Built-in DSP
CategoryAnalog mixed-signal IC    Consumption circuit   
File Size930KB,35 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Environmental Compliance
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BM5446EFV Overview

Class-D Speaker Amplifier for Digital Input with Built-in DSP

BM5446EFV Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerROHM Semiconductor
Parts packaging codeTSSOP
package instructionHVSSOP,
Contacts54
Reach Compliance Codecompli
ECCN codeEAR99
Nominal bandwidth20 kHz
Commercial integrated circuit typesAUDIO AMPLIFIER
harmonic distortion0.07%
JESD-30 codeR-PDSO-G54
JESD-609 codee2
length18.5 mm
Number of channels2
Number of functions1
Number of terminals54
Maximum operating temperature85 °C
Minimum operating temperature-25 °C
Nominal output power20 W
Package body materialPLASTIC/EPOXY
encapsulated codeHVSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1 mm
Maximum supply voltage (Vsup)26 V
Minimum supply voltage (Vsup)10 V
surface mountYES
technologyCMOS
Temperature levelOTHER
Terminal surfaceTin/Copper (Sn/Cu)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.5 mm
Middle Power Class-D Speaker Amplifiers
Class-D Speaker Amplifier
for Digital Input with Built-in DSP
BM5446EFV
No.10075EBT13
●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 8Ω 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.
2
(I S/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.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/32
2010.05 - Rev.B

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