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Datasheet
Middle Power Class-D Speaker Amplifier series
15W+15W
Class D Speaker Amplifier for Digital Input
BD5452AMUV
●Applications
Flat Panel TVs (LCD, Plasma), Home Audio, Desktop
PC, Amusement equipments, Electronic Music
equipments, etc.
●Package(s)
VQFN032V5050
W(Typ.) x D(Typ.) x H(Max.)
5.00mm x 5.00mm x 1.00mm
VQFN032V5050
●Typical Application Circuit
MCLK
OUT2N
BCLK
LRCLK
OUT2P
SDATA
ERROR
PLMIT1
OUT1P
PLMIT0
SP ch2
(Rch)
OUT1N
SP ch1
(Lch)
MUTEＸ
●Features
This IC has one system of digital audio interface.(I2S
format, SDATA: 16 / 20 / 24bit, LRCLK: 32kHz /
44.1kHz / 48kHz, BCLK: 64fs(fixed), MCLK: 256fs /
512fs)
Low supply current at RESET mode.
The decrease in sound quality because of the change
of the power supply voltage is prevented with the
feedback circuitry of the output. In addition, a low
noise and low distortion are achieved.
Eliminate large electrolytic-capacitors for high
performance of Power Supply Rejection.
Power Limit Function. (at RL =8Ω, 10W /5W /OFF)
Available for Monaural mode.
Within the wide range of the power supply voltage, it
is possible to operate in a single power supply. (10 to
18V)
It contributes to miniaturizing, making to the thin type,
and the power saving of the system by high efficiency
and low heat.
Eliminates pop noise generated when the power
supply goes on/off, or when the power supply is
suddenly shut off. High quality muting performance is
realized by using the soft-muting technology.
This IC is a highly reliable design to which it has
various protection functions. (High temperature
protection, under voltage protection, Output short
protection, Output DC voltage protection and Clock
stop protection, (MCLK, BCLK, LRCLK)
Small package (VQFN032V5050 package)
contributes to reduction of PCB area.
●Key Specifications
Supply voltage:
10V to 18V
Speaker output power:
15W+15W
(VCC=16V, RL=8Ω, Power Limit=Off)
Total harmonic distortion:
0.08％(Po=4.5W)
Crosstalk:
80dB(Typ.)
PSRR:
65dB(Typ.)
Output noise voltage:
100μVrms(Typ.)
Standby current:
100µA (Typ.)
Operating temperature range:
-25℃ to +85℃
RSTX
●General Description
BD5452AMUV is a Class D Speaker Amplifier designed
for Flat-panel TVs in particular for space-saving and
low-power consumption, delivers an output power of
15W+15W. This IC employs state-of-the-art Bipolar,
CMOS, and DMOS (BCD) process technology. With this
technology, the IC can achieve high efficiency. 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 30W. This product satisfies both needs for drastic
downsizing, low-profile structures and many function,
high quality playback of sound system.
μ-con
Digital Audio Source
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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Datasheet
BD5452AMUV
●Pin Configuration
(TOP VIEW)
Figure 2. Pin Configuration
●Pin Description
Pin No.
Symbol
I/O
Pin No.
Symbol
I/O
Pin No.
1
SDATA
I
9
FILA
O
17
GNDA
2
BCLK
I
10
3
LRCLK
I
11
4
RSTX
I
12
5
MUTEX
I
13
6
REG_G
O
14
7
REG3
O
15
8
FILP
O
16
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TSZ22111・15・001
OUT1N
GNDP1
OUT1P
GNDP1
Symbol
VCCP1
I/O
Pin No.
Symbol
I/O
I
25
GNDP2
-
-
18
I
26
O
19
PLIMT0
I
27
O
20
PLIMT1
I
28
-
21
CLK_MOD
I
29
O
22
ERROR
O
30
O
23
-
24
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VCCP2
OUT2P
GNDP2
OUT2N
O
O
O
O
I
31
VCCA
I
I
32
MCLK
I
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Datasheet
BD5452AMUV
17
VCCP1
Output Short Protection
Output DC Voltage Protection
High Temperature Protection
27
28
Under Voltage Protection
Over Voltage Protection
Clock Stop Protection
29
PWM
Modulator
30
VCCA
VCCA
31
MCLK
Driver
FET
1P
Driver
FET
2N
Driver
FET
1N
32
×8 Over
Sampling Digital Filter
16
18
GNDP1
15
19
20
OUT1P
14
21
22
OUT1P
13
VCCP1
GNDP1
12
VCCP1
OUT1N
11
PLIMT0
OUT1N
10
ERROR CLK_MOD PLIMT1
I/F
Driver
FET
2P
GNDP2
OUT2N
23
VCCP2
OUT2P
OUT2N
24
26
OUT2P
VCCP2
25
GNDP2
VCCP2
GNDA
9
●Block Diagram
FILA
FILA
I2S
I/F
I/F
REG_G
REG3
1
2
3
4
5
6
7
SDATA
BCLK
LRCLK
RSTX
MUTEX
REG_G
REG3
FILP
8
FILP
Figure 3. Block Diagram
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Datasheet
BD5452AMUV
●Absolute Maximum Ratings
Item
Supply voltage
Power dissipation
Input voltage
Terminal voltage 1
Terminal voltage 2
Terminal voltage 3 ※5
Open-drain terminal voltage
Operating temperature range
Storage temperature range
Maximum junction temperature
Symbol
VCCmax
Pd
VIN
VPIN1
VPIN2
VPIN3
VERR
Topr
Tstg
Tjmax
Limit
-0.3 to 22
3.26
4.56
-0.3 to 4.5
-0.3 to 7.0
-0.3 to 4.5
-0.3 to 22
-0.3 to 22
-25 to +85
-55 to +150
+150
Unit
V
W
W
V
V
V
V
V
℃
℃
℃
Conditions
Pin 17,18,23,24,31 ※1 ※2
※3
※4
Pin 1 to 5, 19 to 21, 32
Pin 6,8,9
Pin 7
Pin 11,12,14,15,26,27,29,30
Pin 22
※1 The voltage that can be applied reference to GND (Pin 10, 13, 16, 25, 28).
※2 Do not, however exceed Pd and Tjmax=150℃.
※3 74.2mm×74.2mm×1.6mm, FR4, 4-layer glass epoxy board
2
2
(Top and bottom layer back copper foil size: 20.2mm , 2nd and 3rd layer back copper foil size: 5505mm )
Derating in done at 26.1mW/℃ for operating above Ta＝25℃. There are thermal via on the board.
※5 (Reference info.) It is confirmed to this terminal to be able to tolerate undershoot within the range of the following Figure 4
with ROHM evaluation board.
Figure 4. Undershoot Tolerance Range
●Recommended Operating Rating
Item
Supply voltage
Minimum load impedance
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TSZ22111・15・001
Symbol
VCC
RL
Limit
10 to 18
3.6
3.2
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Unit
V
Ω
Ω
Conditions
VCC≦18V
VCC≦16V
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Datasheet
BD5452AMUV
●Electrical Characteristics
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
Item
Symbol
Limit
Min
Typ
Max
Unit
Pin Condition
Total circuit
Circuit current (Reset mode)
ICC1
-
0.1
0.2
mA
No load, RSTX=0V, MUTEX=0V
Circuit current (Mute mode)
ICC2
-
15
25
mA
No load, RSTX=3.3V, MUTEX=0V
Circuit current (Sampling mode)
ICC3
-
50
80
mA
No load, RSTX=3.3V, MUTEX=3.3V
Open-drain terminal Low level voltage
VERR
-
-
0.8
V
Pin22, IO=0.5mA
Regulator output voltage 1
VREGG
4.7
5.0
5.3
V
Pin6
Regulator output voltage 2
VREG3
3
3.3
3.6
V
Pin7
High level input voltage
VIH
2
-
3.3
V
Pin 1 to 5, 1921, 32
Low level input voltage
VIL
0
-
0.9
V
Pin 1 to 5, 19 to 21, 32
IIH
50
66
95
µA
Pin 1 to 5, 19 to 21, 32, VIN = 3.3V
Maximum output power 1
PO1
-
15
-
W
Maximum output power 2
PO2
10
-
-
W
Maximum output power 3
PO3
5
-
-
W
Voltage gain1
GV26
25
26
27
dB
Po=1W, PLIMT0=L, PLIMT1=L
※6
Voltage gain2
GV20
19
20
21
dB
Po=1W, PLIMT0=H, PLIMT1=L
※6
Voltage gain3
GV17
16
17
18
dB
Po=1W, PLIMT0=H, PLIMT1=H
※6
Input current
(Input pull-down terminal)
Speaker Output
Vcc=16V, THD+n=10%,
PLIMT0=L, PLIMT1=L
※6
Vcc=16V, THD+n=10%,
PLIMT0=H, PLIMT1=L
※6
Vcc=16V, THD+n=10%,
PLIMT0=H, PLIMT1=H
※6
Total harmonic distortion1
THD1
-
0.16
-
%
PO=1W, BW=20 to 20kHz (AES17)
PLIMT0=H, PLIMT1=L ※6
Total harmonic distortion2
THD2
-
0.08
-
%
PO=4.5W, BW=20 to 20kHz (AES17)
PLIMT0=H, PLIMT1=L ※6
Total harmonic distortion3
THD3
-
0.24
0.3
%
PO=1W, BW=20 to 20kHz (AES17)
VCC=15.7V, PLIMT0=H, PLIMT1=L ※6
CT
60
80
-
dB
Crosstalk
PSRR
(Sampling mode)
Output noise voltage
(Sampling mode)
PWM sampling frequency
PO=1W, BW=IHF-A
PLIMT0=H, PLIMT1=L
※6
Vripple=1Vrms, f=1kHz
※6
PLIMT0=H, PLIMT1=L
※6
PSRR
-
65
-
dB
VNO
-
100
200
µVrms
fPWM1
-
256
-
kHz
-∞dBFS, BW=IHF-A ※6
PLIMT0=H, PLIMT1=L
fs=32kHz ※6
fPWM2
-
352.8
-
kHz
fs=44.1kHz ※6
fPWM3
-
384
-
kHz
fs=48kHz
※6
※6 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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BD5452AMUV
●Typical Performance Curves (Reference) (1/8)
0.16
80
0.14
70
0.12
60
0.10
50
ICC [mA]
ICC [mA]
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
0.08
0.06
RSTX=H
RL=8Ω
No signal
MUTEX=H
40
30
0.04
0.02
MUTEX=L
20
RSTX=MUTEX=L
RL=8Ω
No signal
10
0.00
0
8
10
12
14
16
VCC [V]
18
20
8
10
Figure 5. VCC vs. ICC
12
14
VCC [V]
16
18
20
Figure 6. VCC vs. ICC
2.5
100
RL=8Ω
90
80
RL=6Ω
2.0
RL=6Ω
RL=8Ω
RL=4Ω
RL=4Ω
60
1.5
ICC [A]
Efficiency [%]
70
50
40
1.0
30
20
0.5
10
0
0.0
0
5
10
15
Output Power [W/CH]
5
10
15
Output Power [W/CH]
Figure 7. Output Power vs. Efficiency
PLIMT0=L, PLIMT1=L
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0
Figure 8. Output Power vs. ICC
PLIMT0=L, PLIMT1=L
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Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (2/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
VCC=12V
RL=8Ω
Po=1W
fin=500Hz
VCC=12V
RL=8Ω
Po=1W
fin=500Hz
5ms/div
5ms/div
2V/div
2V/div
Speaker Output
Speaker Output
MUTEX(5pin)
MUTEX(5pin)
5V/div
Figure 9. Waveform of Soft Start
Figure 10. Waveform of Soft Mute
20
3
RL=8Ω
RL=8Ω
VCC=16V
2.5
VCC=12V
15
THD+N=10%
THD+N=1%
10
VCC=18V
2
ICC [A]
Output Power [W/CH]
5V/div
VCC=10V
1.5
1
5
0.5
0
0
8
10
12
14
16
18
20
0
VCC [V]
5
10
15
20
Output Power [W/CH]
Figure 11. VCC vs. Output Power ※
PLIMT0=L, PLIMT1=L
Figure 12. Output Power vs. ICC ※
PLIMT0=L, PLIMT1=L
※ Dotted line means internal dissipation is over package power.
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Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (3/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
20
3
RL=6Ω
VCC=12V
RL=6Ω
2.5
VCC=16V
2
THD+N=1%
ICC [A]
Output Power [W/CH]
VCC=10V
THD+N=10%
15
10
1.5
VCC=18V
1
5
0.5
0
0
8
10
12
14
16
18
20
0
5
VCC [V]
10
15
Output Power [W/CH]
Figure 14. Output Power vs. ICC ※
PLIMT0=L, PLIMT1=L
Figure 13. VCC vs. Output Power ※
PLIMT0=L, PLIMT1=L
※ Dotted line means internal dissipation is over package power.
3
20
RL=4Ω
RL=4Ω
VCC=10V
2.5
2
VCC=12V
ICC [A]
Output Power [W/CH]
15
THD+N=10%
10
THD+N=1%
1.5
VCC=16V
1
VCC=18V
5
0.5
0
0
8
10
12
14
16
18
20
0
VCC [V]
2
4
6
8
10
Output Power [W/CH]
Figure 15. VCC vs. Output Power ※
PLIMT0=L, PLIMT1=L
Figure 16. Output Power vs. ICC ※
PLIMT0=L, PLIMT1=L
※ Dotted line means internal dissipation is over package power.
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Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (4/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
0
30
OUT1
OUT2
-20
No Signal
B.W. none
RL=8Ω
OUT1
OUT2
25
Voltage Gain [dB]
Noise FFT [dBV]
-40
-60
-80
-100
Po=1W
B.W. none
RL=8Ω
20
15
-120
-140
10
10
100
1k
10k
100k
10
100
Freq [Hz]
Figure 17. FFT of output noise voltage
1k
Freq [Hz]
10k
100k
Figure 18. Freq vs. Voltage Gain
100
10
f=1kHz
f=100Hz
f=10kHz
OUT1
OUT2
B.W. 20 to 20kHz
AES17
RL=8Ω
B.W. 20 to 20kHz
AES17
RL=8Ω
10
THD+N [%]
THD+N [%]
1
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
Po [W]
100
1k
10k
Freq [Hz]
Figure 19. Po vs. THD+N
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Figure 20. Freq vs. THD+N
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100k
Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (5/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
0
0
-10
OUT2 to OUT1
OUT1 to OUT2
-20
-10
RL=8Ω
Crosstalk [dB]
-30
-40
-50
-60
-40
-50
-60
-70
-70
-80
-80
-90
-90
-100
0.01
-100
0.1
1
10
10
100
Po [W]
1k
10k
100k
Freq [Hz]
Figure 21. Po vs. Crosstalk
Figure 22. Freq vs. Crosstalk
0
30
OUT1
OUT2
-20
Po=1W
B.W. none
RL=6Ω
OUT1
OUT2
No Signal
B.W. none
RL=6Ω
25
Voltage Gain [dB]
-40
Noise FFT [dBV]
RL=8Ω
-20
-30
Crosstalk [dB]
OUT2 to OUT1
OUT1 to OUT2
-60
-80
-100
20
15
-120
-140
10
10
100
1k
10k
100k
Freq [Hz]
100
1k
10k
Freq [Hz]
Figure 23. FFT of output noise voltage
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Figure 24. Freq vs. Voltage Gain
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100k
Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (6/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
100
f=1kHz
f=100Hz
f=10kHz
10
B.W. 20 to 20kHz
AES17
RL=6Ω
OUT1
OUT2
B.W. 20 to 20kHz
AES17
RL=6Ω
10
THD+N [%]
THD+N [%]
1
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
100
10
100
Po [W]
Figure 25. Po vs. THD+N
-20
OUT2 to OUT1
OUT1 to OUT2
-10
RL=6Ω
OUT2 to OUT1
OUT1 to OUT2
RL=6Ω
-20
-30
Crosstalk [dB]
Crosstalk [dB]
100k
0
-30
-40
-50
-60
-40
-50
-60
-70
-70
-80
-80
-90
-90
-100
0.01
10k
Figure 26. Freq vs. THD+N
0
-10
1k
Freq [Hz]
-100
0.1
1
10
100
Po [W]
100
1k
10k
Freq [Hz]
Figure 27. Po vs. Crosstalk
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Figure 28. Freq vs. Crosstalk
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Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (7/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
0
30
OUT1
OUT2
-20
No Signal
B.W. none
RL=4Ω
25
Voltage Gain [dB]
Noise FFT [dBV]
-40
Po=1W
B.W. none
RL=4Ω
OUT1
OUT2
-60
-80
-100
20
15
-120
10
-140
10
100
1k
10k
100k
10
100
Freq [Hz]
Figure 29. FFT of output noise voltage
1k
Freq [Hz]
10k
100k
Figure 30. Freq vs. Voltage Gain
100
10
f=1kHz
f=100Hz
f=10kHz
OUT1
OUT2
B.W. 20 to 20kHz
AES17
RL=4Ω
B.W. 20 to 20kHz
AES17
RL=4Ω
10
THD+N [%]
THD+N [%]
1
1
0.1
0.1
0.01
0.01
0.01
0.1
1
10
100
100
1k
10k
Freq [Hz]
Po [W]
Figure 31. Po vs. THD+N
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Figure 32. Freq vs. THD+N
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Datasheet
BD5452AMUV
●Typical Performance Curves (Reference) (8/8)
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）
0
0
-10
OUT2 to OUT1
OUT1 to OUT2
-20
-10
RL=4Ω
RL=4Ω
-20
-30
Crosstalk [dB]
-30
Crosstalk [dB]
OUT2 to OUT1
OUT1 to OUT2
-40
-50
-60
-40
-50
-60
-70
-70
-80
-80
-90
-90
-100
-100
0.01
0.1
1
10
100
10
Po [W]
100
1k
10k
100k
Freq [Hz]
Figure 33. Po vs. Crosstalk
Figure 34. Freq vs. Crosstalk
Maximum Output Power [W/CH]
20
B.W. 20 to 20kHz
AES17
RL=8Ω
f=1kHz
THD+N=1%
15
26dB
20dB
10
17dB
5
0
8
10
12
14
16
18
20
VCC [V]
Figure 35. VCC vs. Maximum Output Power
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BD5452AMUV
●About digital audio input
1)
Input digital audio signal sampling frequency (fs) explanation
PWM sampling frequency, Soft-start, Soft-mute time, and the detection time of the DC voltage protection in
the speaker depends on sampling frequency (fs) of the digital audio input.
Sampling frequency of the digital
audio input (fs)
PWM sampling frequency
(fpwm)
Soft-start / Soft-mute time
DC voltage protection in the
speaker detection time
32kHz
256kHz
32msec.
1.02sec
44.1kHz
352.8kHz
23msec.
0.74sec
48kHz
384kHz
21.5msec.
0.68sec
2)
Format of digital audio input
MCLK: It is System Clock input signal.
It will input LRCLK, BCLK, SDATA that synchronizes with this clock that are 256 times of sampling
frequency (256fs) or 512 times of sampling frequency (512fs).
LRCLK: It is L/R clock input signal.
It corresponds to 32kHz/44.1kHz/48kHz with that clock(fs) which are same to the sampling
frequency (fs). The data of a left channel and a right channel for one sample is input to
this section
BCLK: It is Bit Clock input signal.
It is used for the latch of data in every one bit by sampling frequency’s 64 times
sampling frequency (64fs).
SDATA: It is Data input signal.
It is amplitude data. The data length is different according to the resolution of the input
digital audio data. It corresponds to 16/ 20/ 24 bit.
3)
I2S data format
Figure 37. I2S Data Format 64fs, 24bit Data
Figure 38. I2S Data Format 64fs, 20bit Data
Figure 39. I2S Data Format 64fs, 16bit Data
The Low section of LRCLK becomes Lch, the High section of LRCLK becomes Rch.
After changing LRCLK, second bit becomes MSB.
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4)
Audio Interface format and timing
Recommended timing and operating conditions(MCLK, BCLK, LRCLK and SDATA)
1/ｆ
/ MCLK
MCLK
1/fLRCLK
LRCLK
1/fBCLK
BCLK
Figure 40. Clock timing
LRCLK
tHD;LR
tSU;LR
BCLK
tHD ; SD
tSU ; SD
SDATA
Figure 41. Audio Interface timing
Limit
No.
Parameter
Symbol
MCLK=256fs
Min.
Max.
8.192
12.288
MCLK=512fs
Min.
Max.
16.384
24.576
Unit
1
MCLK frequency
fMCLK
MHz
2
LRCLK frequency
fLRCLK
32
48
32
48
kHz
3
BCLK frequency
fBCLK
2.048
3.072
2.048
3.072
MHz
4
Setup time, LRCLK※7
tSU;LR
20
－
20
－
ns
5
Hold time, LRCLK※7
tHD;LR
20
－
20
－
ns
6
Setup time, SDATA
tSU;SD
20
－
20
－
ns
7
8
9
10
Hold time, SDATA
MCLK, DYTY
LRCLK, DYTY
BCLK, DUTY
tHD;SD
dMCLK
dLRCLK
dBCLK
20
40
40
40
－
60
60
60
20
40
40
40
－
60
60
60
ns
%
%
%
※7 This regulation is to keep rising edge of LRCK and rising edge of BCLK from overlapping.
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●Timing Chart
1)
Power supply start-up sequence
VCCA (31pin)
VCCP1 (17, 18pin)
①Power up VCCA, VCCP1, VCCP2 simultaneously.
VCCP2 (23, 24pin)
t
REG_G
REG3
FILA
FILP
REG_G
(6pin)
(7pin)
(9pin)
(8pin)
REG_3
FILA
FILP
t
With Vcc>10V, waiting time unnecessary.
RSTX (4pin)
② Set RSTX to High
after power up.
t
MCLK (32pin)
SDATA(1pin)
BCLK(2pin)
LRCLK(3pin)
③ Digital audio data communication.
t
With Vcc>10V, there are no problem sending digital
audio data at RSTX=L.
MUTEX (5pin)
More than 20msec
④ After RSTX=L→H wait more than
20msec to MUTEX=L→H
t
Soft-start
21.5msec(fs=48kHz)
Speaker output
t
Figure 42. Power supply start-up sequence
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2)
Power supply shut-down sequence
④ Power down VCCA, VCCP1,
VCCP2, simultaneously.
VCCA (31pin)
VCCP1 (17, 18pin)
VCCP2 (23, 24pin)
t
REG_G
REG_G
REG3
FILA
FILP
(6pin)
(7pin)
(9pin)
(8pin)
REG_3
FILA
FILP
t
RSTX (4pin)
③Set RSTX to Low
t
②After stopping speaker output,
turn off the transmission of digital audio signal.
MCLK (32pin)
SDATA(1pin)
BCLK(2pin)
LRCLK(3pin)
t
With Vcc＞10V, there are no problem
sending digital audio data even by RSTX=L
MUTEX (5pin)
①Set MUTEX to Low.
t
Soft-mute
21.5msec(fs=48kHz)
Speaker output
t
Figure 43. Power supply shut-down sequence
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3) About changing audio signal
The output PWM frequency of BD5452AMUV becomes the frequency of eight times of the sampling frequency fs.
Therefore output PWM frequency becomes unstable when MCLK seems to become unstable at the time of channel
switching at input switching and so on, too. It is possible that the LC resonance is occurred and a short protections
function worked.
Figure 44. Action at MCLK unstable1
If you can expect MCLK unstable period, we suggest following process.
1. Mute AUDIODATA from scalar IC.(A)
2. After muting AUDIODATA from scalar IC (B), set MUTEX=L(C).
3. After MCLK go to stable state, set MUTEX=H(D).
4. Release mute AUDIODARA from scalar IC(E).
MCLK unstable period
MCLK
AUDIODATA
MUTEX
OUTX
PWM stop
A
D
B C
E
No matter of order D and E
Figure 45. Action at MCLK unstable2
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BD5452AMUV
●About the protection function
Protection function
Detecting & Releasing condition
PWM
ERROR
Output
Output
HiZ_Low
L
(Latch)
(Latch)
L
(Latch)
Output short
protection
Detecting
condition
Detecting current = 10A (TYP.)
DC voltage protection
in the speaker
Detecting
condition
At speaker output, impressed DC voltage over 0.68sec
(fs=48kHz) over 3.5Vbetween (power limit off),
1.75V(power limit 10W) or 1.225V(power limit 5W)
HiZ_Low
(Latch)
Chip temperature to be above 150℃ (TYP.)
HiZ_Low
Chip temperature to be below 120℃ (TYP.)
Normal
operation
Power supply voltage to be below 8V (TYP.)
HiZ_Low
Power supply voltage to be above 9V (TYP.)
Normal
operation
Power supply voltage to be above 20V(TYP.)
HiZ_Low
Power supply voltage to be below 19.5V(TYP.)
Normal
operation
High temperature
protection
Under voltage
protection
Over voltage
Protection
Detecting
condition
Releasing
condition
Detecting
condition
Releasing
condition
Detecting
condition
Releasing
condition
L
H
H
No change to MCLK more than 1usec (TYP.) or
Clock stop protection
Detecting
condition
HiZ_Low
H
no change to LRCLK more than 21usec (at fs=48kHz.).
Releasing
condition
*
*
no change to BCLK more than 1usec (TYP.) or
Normal input to MCLK, BCLK and LRCLK.
Normal
operation
The ERROR pin is Nch open-drain output.
Once an IC is latched, the circuit is not released automatically even after an abnormal status is removed. The following procedures ① or ② is available for
recovery.
①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.)) turn back to High again.
②Restore power supply after dropping to power supply voltage Vcc＜3V(10msec (Min.) holding) which internal power on reset circuit activates.
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1) Output short protection（Short to the power supply）
This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is
short-circuited to the power supply due to abnormality.
Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the PWM output
pin becomes 10A(TYP.) or more. The PWM output instantaneously enters the state of
HiZ-Low if detected, and IC does the latch.
Releasing method - ①After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.)) turn back to
High again.
② Restore power supply after dropping to power supply voltage Vcc ＜ 3V(10msec (Min.)
holding) which internal power on reset circuit activates.
Short to Vcc
Release from short to Vcc
OUT1P(14,15pin)
OUT1N(11,12pin)
OUT2P(26,27pin)
OUT2N(29,30pin)
t
PWM out : IC latches with HiZ-Low.
Released from latch state.
Over current
10A(TYP.)
t
ERROR (22pin)
t
１μsec(TYP.)
MUTEX(5pin)
Latch release
t
10msec(Min.)
Figure 46. Sequence of the Output short protection
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2) Output short protection（Short to GND）
This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is
short-circuited to GND due to abnormality.
Detecting condition - It will detect when MUTEX pin is set High and the current that flows in the
PWM output terminal becomes 10A(TYP.) or more. The PWM output
instantaneously enters the state of HiZ-Low if detected, and IC does the latch.
Releasing method - ① After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))
turn back to High again.
②Restore power supply after dropping to power supply voltage Vcc＜3V
(10msec (Min.) holding) which internal power on reset circuit activates.
Short to GND
Release from short to GND
OUT1P(14,15pin)
OUT1N(11,12pin)
OUT2P(26,27pin)
OUT2N(29,30pin)
t
Released from latch state.
PWM out : IC latches with HiZ-Low.
Over current
10A(TYP.)
t
ERROR (22pin)
t
１μsec(TYP.)
MUTEX(5pin)
Latch release
t
10msec(Min.)
Figure 47. Sequence of the Output short protection
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3) DC voltage protection in the speaker1
When the DC voltage in the speaker is impressed due to abnormality, this IC has the protection circuit where the
speaker is defended from destruction.
Detecting condition - It will detect when MUTEX pin is set High and speaker output is more than
3.5V(TYP, Power Limit OFF setting), 1.75V(TYP, Power Limit 10W setting),
1.225V(TYP, Power Limit 5W setting), 0.68sec(fs=48kHz) or above.
Once detected, The PWM output instantaneously enters the state of HiZ-Low,
and IC does the latch.
Releasing method - ① After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))
turn back to High again.
②Restore power supply after dropping to power supply voltage Vcc＜3V
(10msec (Min.) holding) which internal power on reset circuit activates.
（Power Limit OFF settings）
Figure 48. Sequence of DC voltage protection in the speaker1
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4) DC voltage protection in the speaker2
About DC voltage protection at PWM output Duty=0% or 100%
When the DC voltage in the speaker is impressed due to abnormality, this IC has the protection circuit where
the speaker is defended from destruction.
Detecting condition - It will detect when MUTEX pin is set High or Low and PWM output Duty=0% or
100% , 43msec(fs=48kHz) or above. Once detected, The PWM output
instantaneously enters the state of HiZ-Low, and IC does the latch.
Releasing method - ① After turning MUTEX terminal to Low(holding time to Low = 10msec(Min.))
turn back to High again.
②Restore power supply after dropping to power supply voltage Vcc＜3V
(10msec (Min.) holding) which internal power on reset circuit activates.
Figure 49. Sequence of DC voltage protection in the speaker2
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5) High temperature protection
This IC has the high temperature protection circuit that prevents thermal reckless driving under an abnormal state for
the temperature of the chip to exceed Tjmax=150℃.
Detecting condition - It will detect when MUTEX pin is set High and the temperature of the chip becomes
150℃(TYP.) or more. Speaker output turns MUTE immediately, when High
temperature protection is detected.
Releasing condition - It will release when MUTEX pin is set High and the temperature of the chip becomes
120℃(TYP.) or less. The speaker output is outputted through a soft-start when
released. (Auto recovery)
Temperature of
IC chip junction(℃)
150℃
120℃
t
OUT1P(14,15pin)
OUT1N(11,12pin)
OUT2P(26,27pin)
OUT2N(29,30pin)
Hi-Z Low
t
Soft-start
21.5msec(fs=48KHz)
Speaker output
t
ERROR (22pin)
3.3V
t
Figure 50. Sequence of High temperature protection
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6) Under voltage protection
This IC has the under voltage protection circuit that make speaker output mute once detecting extreme drop of the
power supply voltage.
Detecting condition - It will detect when MUTEX pin is set High and the power supply voltage becomes
lower than 8V(TYP.).Speaker output turn MUTE immediately, when Under voltage
protection is detected.
Releasing condition - It will release when MUTEX pin is set High and the power supply voltage
becomes more than 9V(TYP.). The speaker output is outputted through a
soft-start when released. (Auto recovery)
Figure 51. Sequence of Under voltage protection
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7) Over voltage protection
This IC has the under voltage protection circuit that make speaker output mute once detecting extreme drop of the
power supply voltage.
Detecting condition - It will detect when MUTEX pin is set High and the power supply voltage becomes
more than 20V(TYP.).Speaker output turn MUTE immediately, when over voltage
protection is detected.
Releasing condition - It will release when MUTEX pin is set High and the power supply voltage becomes
lower than 19.5V(TYP.). The speaker output is outputted through a soft-start when
released. (Auto recovery)
VCCA (31pin)
VCCP1 (17, 18pin)
VCCP2 (23, 24pin)
20V
19.5V
t
OUT1P(14,15pin)
OUT1N(11,12pin)
OUT2P(26,27pin)
OUT2N(29,30pin)
HiZ-Low
t
Soft-start (Auto recovery)
21.5msec(fs=48kHz)
Speaker
Output
t
ERROR (22pin)
3.3V
t
Figure 52. Sequence of Over voltage protection
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8) Clock stop protection(MCLK)
This IC has the clock stop protection circuit that make the speaker output mute when the MCLK signal of the digital
audio input stops.
Detecting condition - It will detect when MUTEX pin is set High and the MCLK signal stops for about
1usec or more. Speaker output turn MUTE immediately, clock stop protection is
detected.
Releasing condition - It will release when MUTEX pin is set High and the MCLK signal returns to the
normal clock operation. The speaker output is outputted through a soft-start when
released. (Auto recovery)
Figure 53. Sequence of Clock stop protection(MCLK)
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9) Clock stop protection(BCLK)
This IC has the clock stop protection circuit that make the speaker output mute when the BCLK signal of the digital
audio input stops.
Detecting condition - It will detect when MUTEX pin is set High and the BCLK signal stops for about
1usec or more. Speaker output turns MUTE immediately, when clock stop
protection is detected.
Releasing condition - It will release when MUTEX pin is set High and the BCLK signal returns to the
normal clock operation. The speaker output is outputted through a soft-start when
released. (Auto recovery)
Figure 54. Sequence of Clock stop protection(BCLK)
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10) Clock stop protection(LRCLK)
This IC has the clock stop protection circuit that make the speaker output mute when the LRCLK signal of the
digital audio input stops.
Detecting condition - It will detect when MUTEX pin is set High and the LRCLK signal stops for about
21usec(at fs=48kHz) or more. Speaker output turn MUTE immediately, when clock
stop protection is detected.
Releasing condition - It will release when MUTEX pin is set High and the LRCLK signal returns to the
normal clock operation. The speaker output is outputted through a soft-start when
released. (Auto recovery)
Clock stop
Clock recover
LRCLK (3pin)
t
Protection start about
21μsec(fs=48kHz) clock stop
OUT1P(14,15pin)
OUT1N(11,12pin)
OUT2P(26,27pin)
OUT2N(29,30pin)
HiZ-Low
t
Soft-start (Auto recovery)
21.5msec(fs=48kHz)
Speaker output
t
ERROR (22pin)
3.3V
t
Figure 55. Sequence of Clock stop protection(LRCLK)
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●Application Circuit Example1
Stereo BTL Output, RL=8Ω, Vcc=10V to 16V
31
10
30
11
29
12
28
13
27
14
26
15
16
25
9
32
Figure 56. Application circuit1
●BOM List1
Stereo BTL Output, RL=8Ω, Vcc=10V to 16V
Parts
Parts No.
Value
Company
Product No.
Rated
Voltage
Tolerance
Size
IC
U1
－
ROHM
BD5452AMUV
－
－
5.0mmx5.0mm
Inductor
L11, L14, L26, L30
10µH
TOKO
B1047AS-100M
-
(±20%)
7.6mm×7.6mm
Resistor
R22
100kΩ
ROHM
MCR03EZPJ104
1/10W
J(±5%)
1.6mm×0.8mm
C17, C23, C31
10uF
GRM31CB11E106KA75L
25V
B(±10%）
3.2mm×1.6mm
C6, C7 C8, C9
0.1uF
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
C11, C14, C26, C30
0.1uF
GRM188B11E104KA01D
25V
B(±10%）
1.6mm×0.8mm
Capacitor
MURATA
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
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●Application Circuit Example 2
Monaural BTL Output, RL=8Ω, Vcc=10V to 16V
Figure 57. Application Circuit 2
●BOM List2
Monaural BTL Output, RL=8Ω, Vcc=10V to 16V
Parts
Parts No.
Value
Company
Product No.
Rated
Voltage
Tolerance
Size
IC
U1
－
ROHM
BD5452AMUV
－
－
5.0mmx5.0mm
Inductor
L11, L14
10µH
TOKO
B1047AS-100M
-
(±20%)
7.6mm×7.6mm
Resistor
R22
100kΩ
ROHM
MCR03EZPJ104
1/10W
J(±5%)
1.6mm×0.8mm
C17, C31
10uF
GRM31CB11E106KA75L
25V
B(±10%）
3.2mm×1.6mm
C6, C7 C8, C9
0.1uF
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
C11, C14
0.1uF
GRM188B11E104KA01D
25V
B(±10%）
1.6mm×0.8mm
Capacitor
MURATA
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
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Datasheet
BD5452AMUV
28
13
27
14
26
15
25
16
●Application Circuit Example 3
Stereo BTL Output, RL=8Ω, Vcc=16V to 18V
※To prevent going over absolute maximum rating by the leap out of power supply and the linking of PWM output wave form,
please provide countermeasure shown below diagram (dot-line) when using at Vcc＞16V.
12
29
31
10
11
30
9
32
Figure 58. Application Circuit Example 3
●BOM List 3
Stereo BTL Output, RL=8Ω, Vcc=16V to 18V
Parts
IC
Parts No.
U1
Value
－
Company
ROHM
Product No.
BD5452AMUV
Rated
－
Tolerance
－
Size
5.0mmx5.0mm
Inductor
L11, L14, L26, L30
R22
10µH
100kΩ
TOKO
B1047AS-100M
MCR03EZPJ104
1/10W
(±20%)
J(±5%)
7.6mm×7.6mm
1.6mm×0.8mm
R11, R14, R26, R30
C17, C23, C31
6.8Ω
10uF
MCR03EZPFL6R80
GRM31CB11E106KA75L
1/10W
25V
F(±5%)
B(±10%）
1.6mm×0.8mm
3.2mm×1.6mm
C6, C7 C8, C9
0.1uF
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
Resistor
Capacitor
Electrolytic
Capacitor
ROHM
MURATA
C11, C14, C26, C30
0.1uF
GRM188B11A104KA01D
25V
B(±10%）
1.6mm×0.8mm
C11B, C14B, C26B,
C30B
680pF
GRM188B11E681KA01
25V
B(±10%）
1.6mm×0.8mm
C17B
220µF
ECA1EMH221
25V
±20%
φ8mm×11.5mm
Panasonic
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
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Datasheet
BD5452AMUV
●Application Circuit Example 4
Monaural BTL Output, RL=8Ω, Vcc=16V to 18V
※To prevent going over absolute maximum rating by the leap out of power supply and the linking of PWM output wave form,
please provide countermeasure shown below diagram (Red dot-line) when using at Vcc＞16V.
VCC: 16V～18V
C17B
220μF
ERROR 3.3V
REG3
3.3V
3.3V
R22
100kΩ
24
23
VSS
22
VSS
21
C17
10μF
VSS
20
18
19
17
I/F
VCCP1
Output Short Protection
Output DC Voltage Protection
High Temperature Protection
Driver
FET
1P
16
26
Driver
FET
2P
15
25
CLK_MOD PLIMT1 PLIMT0
VCCP2
14
28
GNDP2
GNDP1
Driver
FET
2N
31
MCLK
32
C31
10μF
I2S I/F
2
1
12
Driver
FET
1N
×8 Over
Sampling Digital Filter
3
SDATA BCLK
4
LRCLK RSTX
OUT1N
C14
0.1μF
I/F
REG_G
REG3
5
6
7
GNDP1
R11
6.8Ω
C11B
880pF
C11
0.1μF
SP 1ch
(8Ω)
10μH
L11
GNDA
GNDA
10
30
VCCA
GNDP1
11
29
PWM
Modulator
FILA
9
GNDP2
L14
C14B
880pF
R14
6.8Ω
13
27
Under Voltage Protection
Over Voltage Protection
Clock Stop Protection
10μH
OUT1P
C9
0.1μF
FILP
8
MUTEX
C6
C7
C8
0.1μF 0.1μF 0.1μF
Figure 59. Application Circuit Example 4
●BOM List 4
Monaural BTL Output, RL=8Ω, Vcc=16V to 18V
Parts
Parts No.
Value
Company
Product No.
Rated
Tolerance
Size
IC
Inductor
U1
L11, L14
－
10µH
ROHM
TOKO
BD5452AMUV
B1047AS-100M
－
-
－
(±20%)
5.0mmx5.0mm
7.6mm×7.6mm
Resistor
R22
R11, R14
100kΩ
6.8Ω
ROHM
MCR03EZPJ104
MCR03EZPFL6R80
1/10W
1/10W
J(±5%)
F(±5%)
1.6mm×0.8mm
1.6mm×0.8mm
C17, C31
10uF
GRM31CB11E106KA75L
25V
B(±10%）
3.2mm×1.6mm
C6, C7 C8, C9
0.1uF
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
C11, C14
0.1uF
GRM188B11A104KA01D
25V
B(±10%）
1.6mm×0.8mm
C11B, C14B
680pF
GRM188B11E681KA01
25V
B(±10%）
1.6mm×0.8mm
C17B
220µF
ECA1EMH221
25V
±20%
φ8mm×11.5mm
Capacitor
Electrolytic
Capacitor
MURATA
Panasonic
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage
on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute
maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp
diode between the power supply and GND pins.
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Datasheet
BD5452AMUV
●About circuit board layout
Be careful of the following order of priority, and design a circuit board layout.
①C13・C27・C31(10uF) put shortest compared with VCC and GND.
②C6・C7・C8・C9(0.1uF) put shortest compared with VCC and GND.
③The thermal pattern on the back connected with the GND.
④Each GND line connected by one point without common impedance.
⑤Each power supply and each GND are divided
⑥GND pattern of both side connected with the a lot of VIA electric contacts to lower the impedance of GND.
⑦GND area of the heat radiation area widen to improve the heat radiation ability.
Reference：ROHM designed 4 layer board
Figure 60. ROHM designed 4layer board
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Datasheet
BD5452AMUV
Reference：ROHM designed 4 layer board SilkScreen
Figure 62. Bottom Layer Silk Screen (Top View)
Figure 61. Top Layer Silk Screen (Top View)
ROHM designed 4 layer board Copper Layer
Figure 63. Top Copper Layer (Top View)
Figure 64. Mid Copper Layer1 (Top View)
Figure 65. Mid Copper Layer2 (Top View)
Figure 66. Bottom Copper Layer (Top View)
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Datasheet
BD5452AMUV
●About the two pieces use of BD5452AMUV
Be careful of the following point, when you have two BD5452AMUVs used at the same time.
It is charged with electricity to GND of LC-Filter for the SW element removal. When you have two BD5452AMUVs used at
the same time and PWM output synchronized , there is common impedance in GND of Filter, the GND electric potential is
raised, and it becomes the aggravation cause of the noise. The GND of Filter is to short in one point when you use two
BD5452AMUVs at the same time. There is no mechanism of the phase control in BD5452AMUV.
Figure 67. Output LC filter
Figure 68. circuit at the time of the two use
●How to select an application parts
1) Output LC Filter Circuit
An output filter is required to eliminate radio-frequency components exceeding the audio-frequency region supplied
to a load (speaker). Because this IC uses sampling clock frequencies from 256kHz(fs=32kHz) to 384kHz(fs=48kHz)
in the output PWM signals, the high-frequency components must be appropriately removed. This section takes an
example of an LC type LPF shown below, in which coil L and capacitor C compose a differential filter with an
attenuation property of -12dB/oct. A large part of switching currents flow to capacitor C, and only a small part of the
currents flow to speaker RL. This filter reduces unwanted emission this way. In addition, coil L and capacitor Cg
compose a filter against in-phase components, reducing unwanted emission further.
14,15
or
26,27
L
C
C
11,12
or
29,30
RL
L
Figure 69. Output LC filter
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Datasheet
BD5452AMUV
Following presents output LC filter constants with typical load impedances.
RL
L
C
4Ω
10µH
0.47µF
6Ω
10µH
0.15µF
8Ω
10µH
0.1µF
Use coils with a low direct-current resistance and with a sufficient margin of allowable currents. A high
direct-current resistance causes power losses. In addition, select a closed magnetic circuit type product in normal
cases to prevent unwanted emission.
Use capacitors with a low equivalent series resistance, and good impedance characteristics at high frequency ranges
(100kHz or higher). Also, select an item with sufficient withstand voltage because flowing massive amount of
high-frequency currents is expected.
2) The value of the LC filter circuit computed equation
The output LC filter circuit of BD5452AMUV is as it is shown in Figure 70. The LC filter circuit of Figure 70 is thought
to substitute it like Figure 71 on the occasion of the computation of the value of the LC filter circuit.
Figure 70. Output LC filter 1
Figure 71. Output LC filter 2
The transfer function H(s) of the LC filter circuit of Figure 71 becomes the following.
1
ω2
LC
H (s) =
=
1
1
ω
s2 +
s+
s2 + s + ω2
CR
LC
Q
The ω and Q become the followings here.
ω2 =
1
LC
ω = 2πfCL
fCL =
1
2π LC
C 1
C
= R
L 2 L L
Q =R
Therefore, L and C become the followings.
L=
1
2
ω C
=
RL
4πfCL Q
C=
Q
Q
=
ωR πfCLRL
The RL and L should be made known, and fCL is set up, and C is decided.
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Datasheet
BD5452AMUV
3) The settlement of the L value of the coil
A standard for selection of the L value of a coil to use is to take the following back anti-matter into
consideration except for the factor such as a low castigation, miniaturization, pale pattern. It is being made
L=10uH with BD5452AMUV in consideration of a balance of the total.
①When L value was made small.
(1) Circuit electric currents increase without a signal. And, efficiency in the low output gets bad.
(2) Direct current resistance value is restrained small when the coil of other L value and size are made the same.
Therefore, maximum output is easy to take out. And, it can be used in the low power supply voltage because DC
electric current (allowable electric current) value can be taken greatly.
②When L value was made large.
(1) Circuit electric current is restrained low without a signal. Efficiency in the low output improves.
(2) Direct current resistance value grows big when the coil of other L value and size are made the same. Therefore,
maximum output is hard to take out. And, because it becomes small, use becomes difficult 【 the DC electric
current (allowable electric current) value 】 in the low power supply voltage, too.
4) The settlement of the fCL
As for the settlement of the fixed number of the LC filter circuit, it is taken into consideration about two points of the
following, and set up.
①The PWM sampling frequency fPWM (=8fS) of BD5452AMUV is set up in 384kHz (@fs=48kHz).
It is set up with fc < fPWM to restrain career frequency omission after the LC filter circuit.
②When fc is lowered too much, the voltage profit of the voice obi stage (especially, the neighborhood of 20kHz)
declines in the speaker output frequency character of the difference movement mode.
And, the speaker output frequency character of the difference movement mode becomes the following.
L[uH]
10
15
22
RL=8Ω
C[uF]
fc[kHz]
0.1
75.32
0.15
80.85
0.22
86.79
0.33
89.92
0.47
86.79
0.1
46.99
0.15
49.66
0.22
53.46
0.33
57.54
0.47
59.7
0.1
30.76
0.15
31.92
0.22
33.73
0.33
36.31
0.47
39.08
Q
0.40
0.49
0.59
0.73
0.87
0.33
0.40
0.48
0.59
0.71
0.27
0.33
0.40
0.49
0.58
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TSZ22111・15・001
L[uH]
10
15
22
RL=6Ω
C[uF]
fc[kHz]
0.1
51.01
0.15
54.76
0.22
56.73
0.33
63.1
0.47
66.68
0.1
33.11
0.15
34.36
0.22
35.65
0.33
38.37
0.47
41.3
0.1
22.49
0.15
22.91
0.22
23.77
0.33
24.66
0.47
26.06
38/51
Q
0.30
0.37
0.44
0.54
0.65
0.24
0.30
0.36
0.44
0.53
0.20
0.25
0.30
0.37
0.44
L[uH]
10
15
22
RL=4Ω
C[uF]
fc[kHz]
0.1
32.19
0.15
33.35
0.22
34.55
0.33
35.8
0.47
38.37
0.1
21.68
0.15
22.08
0.22
22.49
0.33
22.91
0.47
23.77
0.1
14.72
0.15
14.72
0.22
15
0.33
15.28
0.47
15.56
Q
0.20
0.24
0.30
0.36
0.43
0.16
0.20
0.24
0.30
0.35
0.13
0.17
0.20
0.24
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TSZ02201-0V1V0E954520-1-2
04.Oct.2012 Rev.001
Datasheet
BD5452AMUV
5) About the EMI countermeasure
It can be confirmed with Chip Common Mode Choke Coil( DLY5ATN401 ) manufactured by Murata manufacturing,
Chip inductor LCC3225T2R2MR manufactured by TAIYOYUDEN as a part EMI countermeasure except for the output
LC filter recommended with P.30/46～P.33/46.
●Application Circuit Example5（Stereo BTL Output, RL=8Ω, VCC=10V～16V）
Taiyo Yuden L=2.2uH (Chip inductor)
VCCP2: 10V～16V
ERROR 3.3V
REG3
3.3V
3.3V
VCCP1: 10V～16V
R22
C23
10μF
100kΩ
24
20
18
19
17
VCCP1
Driver
FET
1P
Under Voltage Protection
Over Voltage Protection
Clock Stop Protection
High Temperature Protection
16
To Control I/F
Output Short Protection
Output DC Voltage Protection
15
Driver
FET
2P
27
C26
1000pF
21
C17
10μF
VSS
L14
1000pF
C14
13
28
VCCA
32
MCLK
1
2
SDATA BCLK
Control I/F
3
4
Driver
FET
1N
LRCLK RSTX
REG_G
REG3
6
7
5
GNDP1
C11
1000pF
12
Feedback
×8 Over
Sampling Digital Filter
I2S I/F
GNDP1
OUT1N
11
Driver
FET
2N
31
VCCA: 10V～16V
C31
10μF
Feedback
30
OUT2N
L30
Feedback
PWM
Modulator
L11
GNDA
GNDA
10
29
1000pF
Feedback
FILA
9
GNDP2
GNDP2
C30
SP 2ch
(Rch)
(8Ω)
OUT1P
14
VCCP2
26
L26
22
VSS
CLK_MOD PLIMT1 PLIMT0
25
OUT2P
23
VSS
C9
0.1μF
FILP
8
μ-con
MUTEX
C7
C6
C8
0.1μF 0.1μF 0.1μF
Digital Audio Source
Figure 72. Application Circuit Example5
●BOM list 5（Stereo BTL Output, RL=8Ω, VCC=10V～16V）
Parts
Parts No.
Value
Company
Product No.
Rated
Voltage
Tolerance
Size
IC
U1
－
ROHM
BD5452AMUV
－
－
5.0mmx5.0mm
LCC3225T2R2MR
1.5A
(±20%)
3.2mm×2.5mm
MCR03EZPJ104
1/10W
J(±5%)
1.6mm×0.8mm
GRM31CB11E106KA75L
25V
B(±10%）
3.2mm×1.6mm
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
GRM188B11H102KA01D
50V
B(±10%）
1.6mm×0.8mm
Inductor
L11, L14, L26, L30
2.2µH
Taiyo
Yuden
Resistor
R22
100kΩ
ROHM
C17, C23, C31
10uF
C6, C7 C8, C9
0.1uF
C11, C14, C26, C30
1000pF
Capacitor
MURATA
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
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SP 1ch
(Lch)
(8Ω)
Datasheet
BD5452AMUV
●Application Circuit Example 6（
（Stereo BTL Output, RL=8Ω
Ω, VCC=10V～
～16V）
）
ERROR 3.3V
REG3
VCCP2: 10V～16V
3.3V
Murata common mode choke coil
3.3V
VCCP1: 10V～16V
R22
C23
10μF
100kΩ
23
24
C17
10μF
VSS
20
18
19
17
VCCP1
Driver
FET
1P
C14
MCLK
32
C31
10μF
VCCA
I2S I/F
1
Control I/F
2
3
SDATA BCLK
4
Driver
FET
1N
REG_G
REG3
6
7
5
LRCLK RSTX
GNDP1
L11
12
Feedback
×8 Over
Sampling Digital Filter
31
VCCA: 10V～16V
Driver
FET
2N
1000pF
GNDP1
SP 1ch
(Lch)
11
OUT2N
Feedback
30
C30
Feedback
PWM
Modulator
1000pF (8Ω)
C11
OUT1N
GNDA
10
29
SP 2ch
(Rch)
(8Ω) 1000pF
Feedback
GNDA
FILA
C9
0.1μF
9
GNDP2
GNDP2
L26
C11_2
13
28
1000pF
1000pF
OUT1P
14
27
Under Voltage Protection
Over Voltage Protection
Clock Stop Protection
High Temperature Protection
16
To Control I/F
Output Short Protection
Output DC Voltage Protection
15
Driver
FET
2P
26
C26_2
21
22
VCCP2
C26
1000pF
VSS
CLK_MOD PLIMT1 PLIMT0
25
OUT2P
VSS
FILP
8
μ-con
MUTEX
C6
C7
C8
0.1μF 0.1μF 0.1μF
Digital Audio Source
Figure 73. Application Circuit Example6
●BOM list 6（Stereo BTL Output, RL=8Ω, VCC=10V～16V）
Parts
Parts No.
Value
Company
Product No.
Rated
Voltage
Tolerance
Size
IC
U1
－
ROHM
BD5452AMUV
－
－
5.0mmx5.0mm
Common
Mode
Choke Coil
L11, L26
DC
0.024Ω
MURATA
DLY5ATN401SQ2
30V
(±40%)
3.6mmx5.0mm
Resistor
R22
100kΩ
ROHM
MCR03EZPJ104
1/10W
J(±5%)
1.6mm×0.8mm
C17, C23, C31
10uF
GRM31CB11E106KA75L
25V
B(±10%）
3.2mm×1.6mm
C6, C7 C8, C9
0.1uF
GRM188B11A104KA92D
10V
B(±10%）
1.6mm×0.8mm
C11, C11_2,C14,
C26, C26_2,C30
1000pF
GRM188B11H102KA01D
50V
B(±10%）
1.6mm×0.8mm
Capacitor
MURATA
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
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Datasheet
BD5452AMUV
●Measurement data
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,）
Measured by ROHM designed 4 layer board.
30
10uH-OUT1
10uH-OUT2
2.2uH-OUT1
2.2uH-OUT2
DLY401-OUT1
DLY401-OUT2
28
26
Voltage Gain [dB]
24
22
Po=1W
20
18
16
14
12
10
10
100
1k
Freq [Hz]
10k
100k
Figure 74. Frequency response
0
10uH-OUT1
10uH-OUT2
2.2uH-OUT1
2.2uH-OUT2
DLY401-OUT1
DLY401_OUT2
-20
NoiseFFT [dBV]
-40
No signal
-60
-80
-100
-120
-140
10
100
1k
Freq [Hz]
10k
100k
Figure 75. No input signal, test output noise (FFT)
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BD5452AMUV
●Measurement data
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）Measured by ROHM designed 4 layer board.
100
10uH-OUT1
10uH-OUT2
2.2uH-OUT1
2.2uH-OUT2
DLY401-OUT1
DLY401-OUT2
THD+N [%]
10
ｆ=1ｋHz
BW=20～20kHz AES17
1
0.1
THD+N =1% ：8.5W
THD+N=10%：
：11.0W
0.01
0.01
0.1
1
10
Po [W/CH]
Figure 76. THD+N – OUTPUT POWER
100
10uH-OUT1
10uH-OUT2
2.2uH-OUT1
2.2uH-OUT2
DLY401-OUT1
DLY401-OUT2
THD+N [%]
10
Po=1W
BW=20～20kHz AES17
1
0.1
0.01
10
100
1k
Freq [Hz]
10k
100k
Figure 77. THD+N – Frequency
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BD5452AMUV
●Measurement data
（Unless otherwise specified Ta=25℃, Vcc=12V, f=1kHz, RL=8Ω, RSTX=3.3V, MUTEX=3.3V, PLIMT0=L, PLIMT1=L, fs=48kHz, MCLK=256fs,
Output LC filter：L=10uH, C=0.1uF）Measured by ROHM designed 4 layer board.
0
10uH-OUT2 to OUT1
10uH-OUT1 to OUT2
2.2uH-OUT2 to OUT1
2.2uH-OUT1 to OUT2
DLY401-OUT2 to OUT1
DLY401-OUT1 to OUT2
-10
-20
Crosstalk [dB]
-30
Po=1W
BW=20～20kHz AES17
-40
-50
-60
-70
-80
-90
-100
10
100
1k
Freq [Hz]
10k
100k
Figure 78. Crosstalk – Frequency
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BD5452AMUV
6) The settlement of the snubber
① Measure the spike resonance frequency f1 of the PWM output wave shape (When it stands up.) by using
FET probe in the OUT terminal. (Figure 80) The FET probe is to monitor very near pin and shorten ground lead
at the time of that.
② Measure resonance frequency f2 of the spike as a snubber circuit fixed number R=0Ω（Only with the condenser
C, to connect GND） At this time, the value of the condenser C is adjusted until it becomes half of the frequency
(2f2=f1) of the resonance frequency f1 of ①. The value of C which it could get here is three times of the parasitic
capacity Cp that a spike is formed. (C=3Cp)
③ Parasitic inductance Lp is looked for at the next formula.
Lp =
1
(2πf 1 )2 C p
④ The character impedance Z of resonance is looked for from the parasitic capacity Cp and the parasitism
inductance Lp at the next formula.
Z=
Lp
Cp
⑤ A snubber circuit fixed number R is set up in the value which is the same as the character impedance Z.
A snubber circuit fixed number C is set up in the value of 4-10 times of the parasitic capacity Cp. (C=4Cp～
10Cp) Decide it with trade-off with the character because switching electric currents increase when the value of C is
enlarged too much.
spike resonance frequency
5nsec/div
Figure 79. PWM Output waveform
（measure of spike resonance frequency
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Datasheet
BD5452AMUV
●Power Dissipation
5
PCB② 4.56W
VQFN032V5050
4.5
4
3.5
PCB① 3.26W
Pd [W]
3
2.5
2
1.5
1
0.5
0
0
25
50
75
100
125
150
Ta [℃]
Figure 81. Allowable Power Dissipation
Measuring instrument：TH-156（Shibukawa Kuwano Electrical Instruments Co., Ltd.）
Measuring conditions：Installation on ROHM’s board
Board size：74.2mm×74.2mm×1.6mm（with thermal via on board）
Material：FR4
・The board on exposed heat sink on the back of package are connected by soldering.
PCB①：4- layer board (Top and bottom layer back copper foil size: 20.2mm2, 2nd and 3rd layer
θja = 36.48℃/W
back copper foil size: 5505mm2) ,
PCB②：4-layer board（back copper foil size: 5505mm2）, θja = 26.08℃/W
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions.
This IC exposes its frame of the backside of package. Note that this part is assumed to use after providing heat dissipation
treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with heat dissipation pattern not only on
the board surface but also the backside.
Class D speaker amplifier is high efficiency and low heat generation by comparison with conventional Analog power
amplifier. However, In case it is operated continuously by maximum output power, Power dissipation (Pdiss) may exceed
package dissipation. Please consider about heat design that Power dissipation (Pdiss) does not exceed Package
dissipation (Pd) in average power (Poav).（Tjmax ：Maximum junction temperature=150℃, Ta ：Peripheral temperature[℃],
θja ：Thermal resistance of package[℃/W], Poav：Average power[W], η：Efficiency）
Package dissipation : Pd（W）=（Tjmax - Ta）／θja
Power dissipation
: Pdiss（W ）= Poav ×（1／η- 1）
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BD5452AMUV
●Pin function explanation (Provided pin voltages are typ. Values) (1/2)
Pin No.
4
Pin name
RSTX
Pin voltage
0V
Pin explanation
Reset pin for Digital circuit
H: Reset OFF
L: Reset ON
5
MUTEX
0V
Speaker output mute control pin
H: Mute OFF
L: Mute ON
1
2
3
32
19
20
SDATA
BCLK
LRCLK
MCLK
PLIMT0
PLIMT1
21
CLK_MOD
10
GNDA
0V
8
FILP
1.6 to 2.4V
Internal equivalence circuit
Digital audio signal input pin
Power limit setting terminal
MCLK setting terminal
GND pin for Analog signal
－
Bias pin for PWM signal
Please connect the capacitor.
7
REG3
3.3V
Internal power supply pin for Digital circuit
Please connect the capacitor.
22
ERROR
－
Error flag pin
Please connect pull-up resister.
H: While Normal
L: While Error
6
REG_G
5.0V
Internal power supply pin for Gate driver
Please connect the capacitor.
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Datasheet
BD5452AMUV
●Pin function explanation (Provided pin voltages are typ. Values) (2/2)
Pin No.
9
Pin name
FILA
Pin voltage
2.5V
Pin explanation
Bias pin for PWM signal.
Internal equivalence circuit
Please connect the capacitor.
31
VCCA
Vcc
Power supply pin for Analog signal
23,24
VCCP2
Vcc
Power supply pin for ch2 PWM signal
－
Please connect the capacitor.
26,27
OUT2P
Vcc to 0V
Output pin of ch2 positive PWM
Please connect to Output LPF.
GND pin for ch2 PWM signal
25,28
GNDP2
0V
29,30
OUT2N
Vcc to 0V
Output pin of ch2 negative PWM
Please connect to Output LPF.
11,12
OUT1N
Vcc to 0V
Output pin of ch1 negative PWM
Please connect to Output LPF.
GND pin for ch1 PWM signal
13,16
GNDP1
0V
14,15
OUT1P
Vcc to 0V
Output pin of ch1 positive PWM
Please connect to Output LPF.
17,18
Power supply pin for ch1 PWM signal
－
VCCP1
Please connect the capacitor.
●Terminal setting
1) RSTX pin, MUTEX pin function
RSTX
MUTEX
L
L/H
H
L
H
H
Normalcy
PWM output
ERROR
OUT1P, 1N, 2P, 2N
output
HiZ_L
H
(Reset_mode)
HiZ_L
H
(MUTE_ON)
Normal Operation
H
(MUTE_OFF)
Error detecting
PWM output
ERROR
OUT1P, 1N, 2P, 2N
output
HiZ_L
H
(Reset_mode)
HiZ_L
L
(MUTE_ON)
HiZ_L
L
(MUTE_ON)
※RSTX(4pin)terminal, MUTEX(5pin)terminal are internally pulled down by 50 kΩ(Typ.)
※With RSTX=L data of every register within IC (I2S / I/F part, ×8 over sampling digital filter part, latch circuit when detecting ERROR) becomes unnecessary.
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BD5452AMUV
2) CLK_MOD pin function
CLK_MOD
MCLK input
L
H
256fs
512fs
Because care for the POP sound isn't being done, Make it MUTE condition, and change CLK_MOD terminal
logic when you change the mode during the movement.
3) PLIMT pin function
PLIMT1
PLIMT0
Gain Setting(BTL)
Condition of power limit
L
L
L
H
26dB
20dB
off
Min. 10 W(at 8Ω)
H
H
L
H
－ ※
17dB
－ ※
Min. 5 W(at 8Ω)
※ Don’t use this condition.
Because care for the POP sound isn't being done, Make it MUTE condition, and change CLK_MOD terminal
logic when you change the mode during the movement.
And, PowerLimit function of BD5452AMUV is decided as follows. Set it up corresponding to the used speaker
because maximum output value varies according to the speaker load resistance value as mentioned in the
mention in the following.
VCC
VCC
ON
rDS
rDC
OFF
rDC
RL
rDS
OFF
Cg
ON
Cg
C
Figure.75 Schematic of output
equivalent
V O _ SP = V O _ DSP × 10
PO (THD=1%) =
 VIN
10 20

 G BTL 


 20 
×
2 (rDS
RL
+ rDC ) + R L
 GBTL 




RL
 × 10  20  ×


r
r
R
2
(
+
)
+

DS
DC
L

RL
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VIN ： I2S Input level [dBFS]
GBTL ： Gain Setting [dB]
RL ： Load resistance [Ω]
rDS ： Resistance of FET [Ω]
（TYP.=0.3Ω）
rDC ： DC resistance of Coil [Ω]
TSZ02201-0V1V0E954520-1-2
04.Oct.2012 Rev.001
Datasheet
BD5452AMUV
●Notes for use
1 ) Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may
result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when
such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a
special mode where the absolute maximum ratings may be exceeded is anticipated.
2 ) Power supply lines
As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between
power supply and GND as an electric pathway for the regenerated current. Be sure that there is no problem with each
property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the
connected power supply does not have sufficient current absorption capacity, regenerative current will cause the
voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the
absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a
voltage clamp diode between the power supply and GND pins.
3 ) GND potential（Pin 10, 13, 16, 25, 28）.
Any state must become the lowest voltage about GND terminal and VSS terminal.
4 ) Input terminal
The parasitic elements are formed in the IC because of the voltage relation. The parasitic element operating causes the
wrong operation and destruction. Therefore, please be careful so as not to operate the parasitic elements by
impressing to input terminals lower voltage than GND and VSS. Please do not apply the voltage to the input terminal
when the power-supply voltage is not impressed.
5 ) Actions in strong magnetic field
Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction.
6 ) Thermal shutdown circuit
This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the
output transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC
avoiding thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax = 150℃.
7 ) Shorts between pins and miss installation
When mounting the IC on a board, pay adequate attention to orientation and placement discrepancies of the IC. If it is
missing installed and the power is turned on, the IC may be damaged. It also may be damaged if it is shorted by a
foreign substance coming between pins of the IC or between a pin and a power supply or a pin and a GND.
8 ) Power supply on/off （Pin 17, 18, 23, 24, 31）
In case power supply is started up, RSTX（Pin 4）and MUTEX(Pin 5) always should be set Low. And in case power
supply is shut down, it should be set Low likewise. Then it is possible to eliminate pop noise when power supply is
turned on/off. And also, all power supply terminals should start up and shut down together.
9 ) ERROR terminal（Pin 22）
An error flag is outputted when Output short protection and DC voltage protection in the speaker are operated. These
flags are the function which the condition of this product is shown in.
10) Precautions for Speaker-setting
If the impedance characteristics of the speakers at high-frequency range while increase rapidly, the IC might not have
stable-operation in the resonance frequency range of the LC-filter. Therefore, consider adding damping-circuit, etc.,
depending on the impedance of the speaker
11) About short to VCC or GND after the LC filter
Though this IC has a short protection function, when short to VCC or GND after the LC filter a short protection function
operate by over-electric current. But, Be fully careful because over/undershoot which exceeds a maximum standard by
back electromotive force of the coil absolutely occurs and sometimes reaches it for the destruction.
12) About REG terminals
The REG terminal of BD5452AMUV doesn't aim at supplying it to the outside.
Therefore, don't connect the one except for Pullup of the condenser for the stabilization and the ERROR
terminal.
Status of this document
The Japanese version of this document is formal specification. A customer may use this translation version
only for a reference to help reading the formal version.
If there are any differences in translation version of this document formal version takes priority
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Datasheet
BD5452AMUV
●Ordering Information
B
D
5
4
5
M
A
2
U
V
E2
Package
MUV: VQFN032V5050
Part Number
Packaging and forming specification
E2: Embossed tape and reel
●Physical Dimension Tape and Reel Information
VQFN032V5050
<Tape and Reel information>
5.0 ± 0.1
5.0±0.1
1.0MAX
3.4±0.1
0.4 ± 0.1
1
8
9
32
16
25
24
0.75
0.5
2500pcs
E2
The direction is the 1pin of product is at the upper left when you hold
)
(0.22)
( reel on the left hand and you pull out the tape on the right hand
3.4 ± 0.1
+0.03
0.02 -0.02
S
C0.2
Embossed carrier tape
Quantity
Direction
of feed
1PIN MARK
0.08 S
Tape
17
+0.05
0.25 -0.04
1pin
(Unit : mm)
Reel
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
●Marking Diagram(s)(TOP VIEW)
VQFN032V5050(TOP VIEW)
Part Number Marking
D 5 4 5 2 A
LOT Number
1PIN MARK
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Datasheet
BD5452AMUV
●Revision History
Date
Revision
04.Oct.2012
001
Changes
New Release
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Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
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