Datasheet
Middle Power Class-D Speaker Amplifier
25W+25W
Full Digital Speaker Amplifier with built-in DSP
BM5449MWV
●General
Description
BM5449MWV is a Full Digital 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
25W+25W. 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 90% (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
■
With wide range of power supply voltage. (V
CC
=10 to 26V)
■
This IC includes the DSP (digital sound processor) for
Audio signal processing for Flat TVs.
Synchronous SRC, Surround, 8 Band EQ, 1 Band EQ (for
Sub), Volume, 2 Band DRC, Delay RAM for phase revised
Close Over Filter, 512 Taps FIR Filter, P
2
Volume, P
2
Base+,
Higher Sound Complement (High Generator), Soft Clipper,
Hard Clipper
■
This IC has two inputs systems of digital audio interface.
2
I S / LJ / RJ format, LRCLK: 8 to 192 kHz, BCLK: 32fs /
48fs / 64fs, SDATA: 16 / 20 / 24bits
BCLK: 32fs / 48fs / 64fs, SDATA: 16 / 20 / 24bits
■
Two Digital Audio Output for Audio DAC and headphone.
■
One PWM Output for Subwoofer.
■
The sound quality decrease by the power supply variation
is prevented with the output feedback circuit. In addition,
a low noise and a low distortion are achieved. Mass
electrolytic capacitor is unnecessary because it is strong
in the power supply variation.
■
It contributes to miniaturizing, making to the thin type, and
the power saving of the system by highly effective
(10W+10W output and 8Ω on-load) 90% and low
generation of heat.
■
Low current at the Power down Mode.
■
The pop noise at power supply on/off is prevented, and
a more high-quality soft mute function is built into.
Highly reliable design with built-in various protection
functions.
■
The component side product can be decreased because
of small package (UQFN056V7070).
■
The maximum output in the stereo is
25W+25W (VCC=20.5V, 8Ω load).
■
The maximum output in the monaural(PBTL) is
50W(VCC=20.5V, 4Ω load)
●Key
Specifications
Supply voltage (VCC):
Speaker output power
(VCC=18V, RL=8Ω)
THD+N
●Package
UQFN056V7070
ec
N
ew om
m
D
es en
ig de
ns d
f
●Applications
■
Flat Panel TVs(LCD, Plasma)
■
Home Audio
■
Amusement equipments
■
Electronic Music equipments etc.
●Typical
Application Circuit
○This
product is not designed protection against radiation.
N
ot
R
Figure 1. Typical application circuit
○Product
structure : Silicon monolithic integrated circuit
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10V to 26V
20W+20W(Typ.)
0.05 %( Typ.)
W (Typ.) x D (Typ.) x H(Max.)
7.00mm x 7.00mm x 1.00mm
BM5449MWV
●
Pin Configuration
SDATAO1
SDATAO2
MUTEＸ
VCCP1
VCCP1
OUT1P
Datasheet
GAIN2
ADDR
SDA
RSTX
PDX
SCL
GAIN1
56
55
54
53
52
51
50
49
48
47
46
45
44
N.C.
LRCKO
BCLKO
MCLKO
SDATA1
SDATA2
LRCK
1
2
I
2
S
OUT
ec
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m
D
es en
ig de
ns d
f
3
40
5
6
I
2
S
LJ
RJ
I/F
SRC
Audio
DSP
×8 Over
Sampling
Digital Filter
Driver
FET 1P
GNDP1
4
PWM
Modulator
BCLK
7
Driver
FET 1N
XI
8
XO
VSS
PLL
9
Driver
FET 2N
PLL
10
DVDD
12
GNDP2
11
Driver
FET 2P
TEST1
REG15
13
×8 Over Sampling
Digital Filter
14
PWM
Modulator
15
16
17
18
19
20
21
22
23
24
25
26
27
GNDA
TEST2
IN_ERR
SW2N
SW1N
REG5
FILP
SW2P
SW1P
REGG
VCCP2
VCCP2
●
Pin Description
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R
Figure 2. Pin configuration (Top View)
Name
I/O
No.
15
16
Name
I/O
I
O
No.
29
30
Name
N.C.
I/O
O
-
-
-
-
O
O
O
O
-
-
-
-
O
OUT2P
VCCA
28
No.
43
44
ot
LRCKO
BCLKO
I/O
TEST2
SW2N
SW2P
SW1N
SW1P
GNDA
OUT2P
I/O
I
I
I
I
I
O
-
O
-
I
O
MCLKO
I/O
17
18
19
20
21
22
23
24
25
26
27
28
O
O
O
-
I
O
O
O
-
-
-
O
31
32
33
34
35
36
37
38
39
40
41
42
GNDP2
GNDP2
N.C.
OUT2N
OUT2N
OUT1N
OUT1N
N.C.
GNDP1
GNDP1
N.C.
OUT1P
45
46
47
48
49
50
51
52
53
54
55
56
N
SDATA1
SDATA2
LRCK
BCLK
XI
XO
VSS
PLL
DVDD
TEST1
REG15
IN_ERR
FILP
REG5
REGG
VCCA
VCCP2
VCCP2
OUT2P
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42
I
2
C
I/F
Control
I/F
Gain
Protection
43
OUT1P
N.C.
41
GNDP1
GNDP1
N.C.
OUT1N
OUT1N
OUT2N
OUT2N
N.C.
GNDP2
GNDP2
N.C.
OUT2P
39
38
37
36
35
34
33
32
31
30
29
Name
N.C.
I/O
O
-
-
-
I/O
I/O
I
I
I
I
I/O
I
I/O
I/O
OUT1P
VCCP1
VCCP1
GAIN1
GAIN2
MUTEX
PDX
RSTX
SCL
SDA
ADDR
SDATAO2
SDATAO1
BM5449MWV
●
Absolute Maximum Ratings(Ta=25℃)
Item
Supply voltage
Power dissipation
Input voltage
Terminal voltage1
Terminal voltage 2
Terminal voltage 3
Operating temperature range
Storage temperature range
Maximum junction temperature
Symbol
V
CC
V
DD
Pd
V
IN
V
PIN1
V
PIN2
V
PIN3
T
opr
T
stg
T
jmax
Limit
-0.3 to 30
-0.3 to 4.5
4.29
4.83
-0.3 to 4.5
-0.3 to 4.5
-0.3 to 7.0
-0.3 to 30
-25 to +85
-55 to +150
+150
Unit
V
W
V
V
V
V
℃
℃
℃
Pin 4 to 8, 13, 15, 49to54
Pin 1 to 3, 9, 16to19, 47, 48, 55, 56
Pin 22 to 24
Conditions
Pin 25, 26, 27, 45, 46
Pin 12
Datasheet
*1 *2
*1 *2
*3
*4
*1
*1
*1
Pin 28, 29, 34 to 37, 42, 43
*1 The voltage that can be applied reference to GND(Pin 10, 20, 31, 32, 39, 40)
*2 Do not, however exceed Pd and Tjmax=150℃.
*3 74.2mm×74.2mm×1.6mm FR4, 4-layer glass epoxy board (Top and bottom layer back copper foil size : 34.09mm
2
,
2nd, 3rd layer back copper foil size:5505mm
2
)
Derating in done at 34.3 mW/℃ for operating above Ta＝25℃. There are thermal via on the board.
*4 74.2mm×74.2mm×1.6mm F FR4, 4-layer glass epoxy board (Copper area 5505mm2)
Derating in done at 38.6 mW/℃ for operating above Ta＝25℃. There are thermal via on the board.
*5 It should use it below this ratings limit including the AC peak waveform (overshoot) for all conditions.
At only undershoot, it is admitted using at
≦10nse
and
≦30V
by the VCC reference. (Please refer following figure.)
●
RecommendedOperating Ratings (Ta=25℃)
Item
Supply voltage
Symbol
V
CC
V
DD
R
L
ec
N
ew om
m
D
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ig de
ns d
f
VCC
Overshoot to GND
30V (Max.)
Undershoot to VCC
30V(Max.)
GND
≦10nsec
Limit
10 to 26
3.0 to 3.6
3.6
5.4
Unit
V
Ω
Ω
Conditions
Pin 25, 26, 27, 45, 46
Pin 12
Vcc≦18V, Stereo BTL mode
Monaural Parallel BTL mode
Vcc≦26V, Stereo BTL mode
R
N
ot
Minimum load impedance
*6 Do not, however exceed Pd.
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*1 *5
*1 *2
*1 *2
*6
*6
*6
BM5449MWV
Datasheet
●Electrical
characteristics
(Unless otherwise specified Ta=25℃, Vcc=18V, V
DD
=3.3V, fin=1kHz, R
L
=8Ω, RSTX=3.3V, PDX=3.3V, MUTEX=3.3V
fs= 48kHz, GAIN=20dB, DSP : Through, Output LC filter : L=22μH, C=0.33μF, Cg=0.068μF)
Limit
Item
Symbol
Unit
Conditions
Min
Typ
Max
Total circuit
Circuit current
(Power down mode)
Circuit current
(mute mode)
Circuit current
(Normal mode)
I
CC1
I
DD1
I
CC2
I
DD2
I
CC3
I
DD3
-
-
-
-
-
-
0.1
3.7
7.0
25
50
0.2
mA
7.5
25
mA
70
80
mA
Pin 25, 26, 27, 45, 46 No load
RSTX=3.3V, PDX=0V, MUTEX=0V
Pin 12, Noload
RSTX=3.3V, PDX=0V, MUTEX=0V
Pin 25, 26, 27, 45, 46 No load
RSTX=3.3V, PDX=3.3V, MUTEX=0V
Pin 12 Noload
RSTX=3.3V, PDX=3.3V, MUTEX=0V
Pin 25, 26, 27, 45, 46 No load
RSTX=3.3V, PDX=3.3V, MUTEX=3.3V
Pin 12 Noload
RSTX=3.3V, PDX=3.3V, MUTEX=3.3V
Pin 14
Regulator output voltage
ERROR WARNING terminal
L level voltage
H level input voltage
L level input voltage
Input current (Input pull-up terminal)
Input current(SCL, SDA terminal)
Digital Audio Signal
Output H level voltage 1
PWM for Subwoofer
Output H level voltage 2
Digital Audio Signal
Output L level voltage 1
PWM for Subwoofer
Output L level voltage 2
Speaker output
Input current(Input pull-down terminal)
Input current (SCL, SDA terminal)
Maximum output
ot
Total harmonic distortion
Crosstalk
PSRR
ec
N
ew om
m
D
es en
ig de
ns d
f
30
70
V
REG15
V
REG5
V
REGG
V
ERR
V
IH
V
IL
I
IL
I
I
I
IH
I
O
1.3
4.7
4.7
-
1.5
1.7
5.0
5.3
V
Pin 23
5.0
5.3
Pin 24
0.4
-
0.8
-
V
Pin 47, 48, I
O
=0.1mA
V
DD
x0.8
-
V
-
50
-
100
70
0
0
-
-
V
DD
x0.2
150
105
1
-
V
μA
Pin 4 to 7, VIN = 0V
30
-1
μA
μA
Pin 52, 53, VIN = 3.3V
μA
V
V
Pin 52, 53, VIN = 0V
V
OH1
V
OH2
V
OL1
V
OL2
V
DD
-0.5
V
DD
-0.5
0
0
V
DD
V
DD
0.5
Pin 16 to 19, Io=1mA
-
V
-
0.5
V
Pin 16 to 19, Io=1mA
P
O1
P
O2
P
O3
THD
CT
PSRR
V
NO
f
PWM1
f
PWM2
f
PWM3
-
-
-
-
10
20
25
0.05
80
70
80
384
352.8
384
-
-
-
-
-
140
-
-
-
KHz
W
W
W
%
60
-
-
-
-
-
-
dB
dB
μVrms
P
O
=1W, BW=IHF-A
Vripple=1Vrms, f=1KHz
-∞dBFS, BW=IHF-A
Pin 4 to 7, 13, 15, 21, 49 to 54
Pin 4 to 7, 13, 15, 21, 49 to 54
Pin 49 to 51, 54, VIN = 3.3V
Pin 1 to 3,55,56, Io=1mA
Pin 1 to 3,55,56, Io=1mA
R
Vcc=13V, THD+n=10%, Gain=20dB *7
Vcc=18V, THD+n=10%, Gain=22dB *7
Vcc=20.5V、THD+n=10%、Gain=23dB*7
P
O
=1W, BW=20 to 20kHz
*7
*7
*7
*7
*7
*7
*7
N
Output noise voltage
PWM sampling frequency
fs=8kHz, 16kHz, 32kHz
fs=11.025kHz, 22.05kHz, 44.1kHz,
88.2kHz
fs=12kHz, 24kHz, 48kHz, 96kHz
*7 These items show the typical performance of device and depend on board layout, parts, and power supply.
The standard value is in mounting device and parts on surface of ROHM’s board directly.
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BM5449MWV
●
Typical Performance Curves
Datasheet
(Ta=25℃,Vcc=18V,V
DD
=3.3V,fin=1kHz,R
L
=8Ω,RSTX=3.3V,PDX=3.3V,MUTEX=3.3V,fs= 48kHz,GAIN=23dB,DSP through)
Measured by ROHM designed 4-layer board.
0.10
0.09
0.08
0.07
0.06
ICC [mA]
100
90
80
70
60
ICC [mA]
50
40
30
20
10
PDX=H
RL=8Ω
No signal
0.05
0.04
0.03
0.02
0.01
0.00
8
10
ec
N
ew om
m
D
es en
ig de
ns d
f
PDX=MUTEX=L
RL=8Ω
No signal
MUTEX=L
0
16 18 20 22 24 26
VCC [V]
Figure 3.
. Power supply – Current consumption
12
14
28
8
10
12
14
16 18 20
VCC [V]
or
MUTEX=H
22
24
26
28
Figure 4.
. Power supply – Current consumption
100
90
80
70
Efficiency [%]
60
50
40
30
20
10
0
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
R
L
=8Ω
R
L
=8Ω
R
L
=6Ω
R
L
=4Ω
R
L
=6Ω
R
L
=4Ω
R
N
ot
VCC=12V
Gain=20dB
Fin=1kHz
2
4
6
8
Output Power [W]
Figure 5.
. Output power – Efficiency
10
ICC [A]
0
4
8
12
16
20
Output power [W/ch]
24
28
Figure 6.
. Output power – Current consumption
Continued on next page.
※Dotted
line means internal dissipation is over package power.
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