BD5427MUV_10_技术文档

Middle Power Class-D Speaker Amplifiers

Analog Input / BTL Output

Class-D Speaker Amplifier

BD5427MUV

No.10075EBT07

●Description

BD5427MUV is a 7W + 7W stereo class-D power amplifier IC, developed for space-saving and low heat-generation

applications such as low-profile TV sets. The 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 has achieved high efficiency of 80% (7W + 7W output with 8Ω load), which is the

top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve

low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total

output of 14W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality

playback of the sound system.

●Features

1) A high efficiency of 80% (7W + 7W output with 8Ω load), which is the highest grade in the industry and low heat-generation.

2) Driving a lowest rating load of 6Ω is allowed.

3) Pop noise upon turning power on/off and power interruption has been reduced.

4) High-quality audio muting is implemented by soft-switching technology.

5) High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and

GND shorting, against reduced-voltage, and against applying DC voltage to speaker.

6) A master/slave function allowing synchronization of multiple devices reduces beat noises.

7) Adjustment of internal PWM sampling clock frequencies (250kHz to 400kHz) allows easy protective measures

against unwanted radio emission to AM radio band.

8) A compact back-surface heat radiation type power package is employed.

VQFN048V7070 7.0mm × 7.0mm × 1.0mm, pitch 0.5mm

●Absolute Maximum Ratings

A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent

reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability.

The following values assume Ta =25℃. For latest values, refer to delivery specifications.

Symbol

VCC

Rating

+20

Unit

V

Conditions

Parameter

Pin 2, 14, 15, 22, 23, 38, 39, 46, 47

(Note 1, 2)

Supply voltage

3.28

4.8

W

(Note 3)

(Note 4)

Power dissipation

Pd

Input voltage for signal pin

Input voltage for control pin

Input voltage for clock pin

Operating temperature range

Storage temperature range

Maximum junction temperature

VIN

VCONT

VOSC

Topr

-0.2 ~ +7.2

-0.2 ~ Vcc+0.2

-0.2 ~ +7.2

-40 ~ +85

V

Pin 6, 7 (Note 1)

Pin 28, 32 (Note 1)

Pin 31 (Note 1)

V

℃

Tstg

-55 ~ +150

+150

Tjmax

(Note 1) A voltage that can be applied with reference to GND (pins 5, 18, 19, 42, and 43)

(Note 2) Pd and Tjmax=150℃ must not be exceeded.

(Note 3) 114.3mm × 76.2mm × 1.6mm FR4 2-layer glass epoxy board (Copper Area 5505mm²) installed.

If used under Ta=25℃ or higher, reduce 26.2mW for increase of every 1℃. The board is provided with thermal via.

(Note 4) 114.3mm × 76.2mm × 1.6mm FR4 4-layer glass epoxy board (Copper Area 5505mm²) installed.

If used under Ta=25℃ or higher, reduce 38.4mW for increase of every 1℃. The board is provided with thermal via.

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2010.05 - Rev.B

1/15

Technical Note

BD5427MUV

●Operating Conditions

The following values assume Ta =25℃. Check for latest values in delivery specifications.

Symbol

VCC

Rating

+10 ~ +16.5

6 ~ 16

Unit

V

Conditions

Parameter

Supply voltage

Pin 2, 14, 15, 22, 23, 38, 39, 46, 47

(Note 5)

Load resistance

RL

Ω

(Note 5) Pd should not be exceeded.

●Electrical Characteristics

Except otherwise specified Ta = 25℃, VCC = 12V, fIN = 1kHz, Rg = 0Ω, RL = 8Ω、MUTEX="H", MS="L"

For latest values, refer to delivery specifications.

Symbol

Limits

Unit

Conditions

Parameter

Whole circuit

Circuit current 1 (Sampling mode)

Circuit current 2 (Muting mode)

Control circuit

ICC1

ICC2

25

10

mA

With no signal

MUTEX = “L”

“H” level input voltage

“L” level input voltage

Audio circuit

VIH

VIL

2.3 ~ 12

0 ~ 0.8

V

MUTEX, MS

Voltage gain

GV

PO

28

7

dB

W

PO = 1W

Maximum output power (Note 6)

Total harmonic distortion (Note 6)

Crosstalk

THD+N = 10%

THD

CT

0.1

85

80

1

%

PO = 1W, BW=20Hz ~ 20kHz

PO = 1W, Rg = 0Ω, BW = IHF-A

dB

Output noise voltage

(Sampling mode)

VNO

VNOM

FOSC

µVrms Rg = 0Ω, BW = IHF-A

Residual noise voltage

(Muting mode)

µVrms Rg = 0Ω, BW = IHF-A, MUTEX = “L”

Internal sampling clock frequency

250

kHz

MS = “L” (In master operation)

(Note 6) The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components,

and power supplies. The reference values are those applicable to the device and components directly installed on a board specified by us.

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2010.05 - Rev.B

2/15

Technical Note

BD5427MUV

●Electrical characteristic curves (Reference data)

(1) Under Stereo Operation(RL=8Ω)

100

10

Vcc=12V

R_L=8Ω

Vcc=12V

R_L=8Ω

BW=20～20kHz

10

1

Po=1W

BW=20～20kHz

6kHz

1

0.1

0.01

1kHz

0.1

100Hz

0.01

10

100

1000

10000

100000

0.001

0.01

1

10

100

FREQUENCY (Hz)

OUTPUT POWER (W)

Fig. 1 THD+N － Output power

Fig. 2 THD+N － Frequency

0

-20

-40

40

Vcc=12V

35

30

25

20

15

10

5

L

R =8Ω

Po=1W

BW=20～20kHz

Vcc=12V

L

R =8Ω

-60

-80

Po=1W

L=33µH

C=0.47µF

Cｇ=0.1µF

0

-100

10

100

1000

10000

100000

10

100

1000

FREQUENCY(Hz)

10000

100000

FREQUENCY (Hz)

Fig. 3 Voltage gain - Frequency

Fig. 4

Crosstalk - Frequency

20

15

10

5

0

L

R =8Ω

fin=1kHz

THD=10%

Vcc=12V

L

R =8Ω

-20

-40

fin=1kHz

BW=20～20kHz

-60

-80

-100

0

0.001

0.01

0.1

1

10

100

8

10

12

14

16

18

OUTPUT POWER (W)

VCC (V)

Fig. 5 Crosstalk - Output power

Fig. 6 Output power - Power supply voltage

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2010.05 - Rev.B

3/15

Technical Note

BD5427MUV

●Electrical characteristic curves (Reference data) – Continued

100

90

80

70

60

50

100

90

80

70

60

50

40

30

20

10

0

40

Vcc=10V

RL=8Ω

fin=1kHz

Vcc=12V

RL=8Ω

fin=1kHz

30

20

10

0

5

10

15

0

5

10

15

OUTPUT POWER (W/ch)

Fig. 7 Efficiency - Output power

Fig. 8 Efficiency - Output power

100

90

80

70

60

50

40

30

20

10

0

3

Vcc=16.5V

2

1

0

Vcc=12V

Vcc=10V

Vcc=16.5V

L

R =8Ω

fin=1kHz

L

R =8Ω

fin=1kHz

0

5

10

15

20

25

30

35

40

0

5

10

15

TOTAL OUTPUT POWER (W)

OUTPUT POWER (W/ch)

Fig. 9 Efficiency - Output power

Fig. 10 Current consumption - Output power

100

90

80

70

60

50

40

30

20

10

0

RL=8Ω

無信号時

Without signal

Vcc=12V

-20

-40

-60

-80

L

R =8Ω

Without signal

無信号時

BW=20～20kHz

Sampling

-100

-120

-140

Mute

10

100

1000

10000

100000

8

10

12

14

16

18

FREQUENCY (Hz)

VCC (V)

Fig. 11 Current consumption - Power supply voltage

Fig. 12 FFT of Output Noise Voltage

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2010.05 - Rev.B

4/15

Technical Note

BD5427MUV

●Electrical characteristic curves (Reference data) – Continued

MUTEX

Pin 28

MUTEX

Pin 28

Vcc=12V

R^L=8

10V/div

5V/div

Vcc=12V

R^L=8 Ω

Ω

Po=500mW

fin=500Hz

Po=500mW

fin=500Hz

TM

Pin 34

TM

Pin 34

5V/div

2V/div

Speaker

output

Speaker

output

10msec/div

Fig. 13 Wave form when Releasing Soft-mute

Fig. 14 Wave form when Activating Soft-mute

VCCA

VHOLD

Pin 35

VHOLD

Pin 35

5V/div

Vcc=12V

R^L=8 Ω

Vcc=12V

R^L=8 Ω

Po=500mW

fin=3kHz

Po=500mW

fin=3kHz

TM

Pin 34

TM

Pin 34

2V/div

Speaker

output

Speaker

output

20msec/div

2msec/div

Fig. 15 Wave form on Instantaneous Power Interruption

(20msec / div)

Fig. 16 Wave form on Instantaneous Power Interruption

(2msec / div)

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2010.05 - Rev.B

5/15

Technical Note

BD5427MUV

●Electrical characteristic curves (Reference data)

(2) Under Stereo Operation (RL=6Ω)

25

R_L=6Ω

fin=1kHz

20

THD=10%

15

10

5

0

8

10

12

14

VCC (V)

Fig. 17 Output power - Power supply voltage

16

18

100

90

80

70

60

50

40

30

20

10

0

90

80

70

60

50

40

30

20

10

0

Vcc=12V

RL=6Ω

fin=1kHz

Vcc=10V

RL=6Ω

fin=1kHz

0

5

10

15

20

0

5

10

15

20

OUTPUT POWER (W/ch)

Fig. 18 Efficiency - Output power

Fig. 19 Efficiency - Output power

100

90

80

70

60

50

40

30

20

10

0

4

3

2

1

Vcc=16.5V

Vcc=12V

Vcc=10V

Vcc=16.5V

RL=6Ω

fin=1kHz

L

R =6Ω

fin=1kHz

0

5

10

15

20

5

10 15 20 25 30 35 40

TOTAL OUTPUT POWER (W)

OUTPUT POWER (W/ch)

Fig. 20 Efficiency - Output power

Fig. 21 Current consumption - Output power

Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing

additional heat sinks.

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2010.05 - Rev.B

6/15

Technical Note

BD5427MUV

●Pin Assignment

Top View

12 11 10

9

8

7

6

5

4

3

2

1

Power Limit

N.C. 48 N.C.

47 VCCP2P

N.C. 13 N.C.

VCCP1P 14

PWM1 PWM2

VCCP1P 15

OUT1P 16

OUT1P 17

GNDP1 18

GNDP1 19

OUT1N 20

OUT1N 21

VCCP1N 22

VCCP1N 23

N.C. 24

46 VCCP2P

45 OUT2P

44 OUT2P

43 GNDP2

42 GNDP2

41 OUT2N

40 OUT2N

39 VCCP2N

38 VCCP2N

37 N.C.

DRIVER

1P

DRIVER

2P

DRIVER

1N

DRIVER

2N

Protections & Logic

Under Voltage Protection

High Temperature Protection

Output Short Protection

Output DC Voltage Protection

N.C.

N.C. N.C.

25 26 27 28 29 30 31 32 33 34 35 36

Fig. 22 Pin Assignment Diagram

●Outer Dimensions and Inscriptions

TYPE

BD5427

Lot No.

1PIN MARK

Fig. 23 Outer Dimensions and Inscriptions of VQFN048V7070 Package

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2010.05 - Rev.B

7/15

Technical Note

BD5427MUV

●Explanation of Pin Functions (Provided pin voltages are typical values.)

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

2

VCCA

Vcc

Analog system power pin

2

3

PWM system bias pin

Connect a capacitor.

Vcc+35

12

3

FILP

5

2

Analog signal system bias pin

Connect a capacitor.

4

5

4

FILA

3.5V

5

GNDA

0V

Analog system GND pin

2

ch2 Analog signal input pin

ch1 Analog signal input pin

20k

6

7

IN2

IN1

6/7

3.5V

Input audio signal via a capacitor.

5

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2010.05 - Rev.B

8/15

Technical Note

BD5427MUV

●Explanation of Pin Functions - Continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

14 15

,

ch1 positive bootstrap pin

Connect a capacitor.

12

BSP1P

-

12

14, 15

16, 17

18, 19

20, 21

22, 23

25

VCCP1P

OUT1P

GNDP1

OUT1N

VCCP1N

BSP1N

Vcc

Vcc ~ 0V

0V

ch1 positive power system power supply pin

16,17

ch1 positive PWM signal output pin

Connect with output LPF.

18,19

22,23

ch1 power system GND pin

ch1 negative PWM signal output pin

Connect with output LPF.

25

Vcc ~ 0V

Vcc

20,21

ch1 negative power system power supply pin

ch1 negative bootstrap pin

Connect a capacitor

-

18,19

2

Warning output pin

2k

Pin to notify operation warning.

H: Under warning

26

H: 5V

L: 0V

26

WARNING

L: Normal operation

Connect a resister.

5

2

Error output pin

2k

A pin for notifying operation errors.

H: Error

27

H: 5V

L: 0V

27

ERROR

L: Normal operation

Connect a resister.

5

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2010.05 - Rev.B

9/15

Technical Note

BD5427MUV

●Explanation of Pin Functions - Continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

2

28

5

Audio mute control pin

1

20k

28

MUTEX

-

H: Mute off

L: Mute on

8, 9

10, 11

13, 24

29, 30

37, 48

N.C. pin

N.C.

-

Nothing is connected with IC internal circuit.

Sampling clock signal input/output pin

31

32

33

OSC

-

When using two or more sampling clocks,

connect via a capacitor.

2

32

5

Master/Slave switching pin

120k

Switching of master/slave functions on a

sampling clock signal.

H: Slave operation

MS

-

L: Master operation

2

Internal PWM sampling clock frequency setting

20k

6/7

5

ROSC

5.6V

Usually the pin is used open.

To adjust an internal sampling clock frequency,

connect a resister.

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2010.05 - Rev.B

10/15

Technical Note

BD5427MUV

●Explanation of Pin Functions - Continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

2

34

5

Audio muting constant setting pin

Connect a capacitor.

34

TM

0 ~ 5V

2

Instantaneous power interruption detecting

voltage setting pin

35

5

35

VHOLD

0.68×Vcc

Connect a capacitor.

To adjust a detecting voltage, connect a

resister.

38,39

ch2 negative bootstrap pin

Connect a capacitor.

36

BSP2N

VCCP2N

OUT2N

GNDP2

OUT2P

VCCP2P

BSP2P

-

36

38, 39

40, 41

42, 43

44, 45

46, 47

1

Vcc

ch2 negative power system power supply pin

40,41

ch2 negative PWM signal output pin

Connect an output LPF.

Vcc ~ 0V

42,43

46,47

0V

cch2 power system GND pin

ch2 positive PWM signal output pin

Connect an output LPF.

1

Vcc ~ 0V

Vcc

44,45

ch2 positive power system power supply pin

ch2 positive bootstrap pin

Connect a capacitor.

-

,43

42

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2010.05 - Rev.B

11/15

Technical Note

BD5427MUV

●Application Circuit Diagram

・Vcc=10V ~ 16.5V

12

11

10

9

8

7

6

5

4

3

2

1

N.C.

13

14

15

16

17

18

19

20

21

22

23

N.C. 48 N.C.

47

N.C.

C

C1

6

8

6

8

2

0. μF

VCCP1

VCCP2

1

5

PWM1

PWM2

46

4

6

F

μ

1

4

C

μF

C

3

C

1

0

C

+

1

L

0.1

F

0.1

4

L

1

0

μ

9

F

μ

3

6

3

4

45

μH

3

DRIVER

1P

DRIVER

2P

1

6

44

4

C

0.1μF

C

4

0.1μF

1

4

C

1

C

4

0. μF

7

43

7

0. μF

7

42

2

0

4

0

C

SP 1ch

SP 2ch

GNDP 1

GNDP 2

0.1μF

(8Ω)

41

40

DRIVER

1N

DRIVER

2N

Protections

&

Logic

3

μH

2

0

4

0

3

2

3

L

Under Voltage Protection

High Temperature Protection

C

2

8

0.1μF

39

Output Short Protection

Output DC Voltage Protection

3

C

2

6

38

6

C

0. μF

6

8

5

8

0. μF

N.C.

24 N.C.

N.C. 37

N.C. N.C.

25

26

27

28

29

30

31

32

33

34

35

36

Fig. 24 Circuit Diagram of Stereo Operation with 8Ω Load

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2010.05 - Rev.B

12/15

Technical Note

BD5427MUV

Table 1 BOM List of Stereo Operation with 8Ω Load

Configuration

Rated

voltage

Temperature

characteristics

No. Item

Part Number

Vendor

Value

Tolerance

Quantity

Reference

mm

inch

1

2

IC BD5427MUV

ROHM

MURATA

Rubycon

MURATA

SANYO

VQFN048V7070

-

1

4

5

4

2

1

2

1

3

2

IC1

C

R

GRM219B31E684KA88

GRM188R11H104KA93

GRM21BB11H104KA01

25ST225M3225

2012

1608

2012

3225

2012

1608

2012

6666

1005

0805

0603

0805

1210

0805

0603

0805

2626

0402

0.68µF

0.1µF

2.2µF

0.47µF

3.3µF

0.1µF

1µF

25V

50V

25V

50V

25V

16V

25V

50V

±10%

±15%

±10%

±20%

±10%

±20%

±1%

±10%

C1, C12, C25, C36

C5, C14, C22, C38, C46

C16, C20, C40, C44

C6, C7

3

±15%

4

±10%

5

±5%

6

50ST474M3225

±5%

C17, C41

7

GRM21BB31E335KA75

GRM188B11E104KA01

GRM21BB11C105KA01

GRM21BB31C106KE15

25SVPD10M

±10%

C35

8

±10%

C31, C34

9

±10%

C3

10

11

12

10µF

100kΩ

±10%

C4

±25%

C2, C15, C39

R26, R27

MCR01MZPF1003

ROHM

±200ppm/℃

Configuration

mm

DC

Resistance

Rated

DC Current

No. Item

Part Number

7G09B-330M

Vendor

Value

Tolerance

±20%

Quantity

2

Reference

13

L

SAGAMI

10×9×10

33µH×2

52mΩmax.

2.0A max.

L16, L20, L40, L44

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2010.05 - Rev.B

13/15

Technical Note

BD5427MUV

●Ordering part number

1. About absolute maximum ratings

If an applied voltage or an operating temperature exceeds an absolute maximum rating, it may cause destruction of a

device. A result of destruction, whether it is short mode or open mode, is not predictable. Therefore, provide a physical

safety measure such as fuse, against a special mode that may violate conditions of absolute maximum ratings.

2. About power supply line

As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between

power supply and GND as a 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. Potential of GND (5, 18, 39, 42, and 43 pins)

Potential of the GND terminal must be the lowest under any operating conditions.

4. About thermal design

Perform thermal design with sufficient margins, in consideration of maximum power dissipation Pd under actual operating

conditions. This product has an exposed frame on the back of the package, and it is assumed that the frame is used with

measures to improve efficiency of heat dissipation. In addition to front surface of board, provide a heat dissipation pattern

as widely as possible on the back also.

A class-D power amplifier has heat dissipation efficiency far higher than that of conventional analog power amplifier and

generates less heat. However, extra attention must be paid in thermal design so that a power dissipation Pdiss should not

exceed the maximum power dissipation Pd.

T^jmax- Ta

Tjmax: Maximum temperature junction = 150[℃]

Ta: Operating ambient temperature [℃]

θja: Package thermal resistance [℃/W]

Po: Output power [W]

Pd 

〔W〕

Maximum power dissipation

ja

θ





1

P^diss P^O

-1^_



〔W〕



Power dissipation









η

η: Efficiency

5. About operations in strong electric field

Note that the device may malfunction in a strong electric field.

6. Thermal shutdown (TSD) 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℃, and is not intended to

protect and secure an electrical appliance. Accordingly, do not use this circuit function to protect a customer's electrical

appliance.

7. About shorting between pins and installation failure

Be careful about direction and displacement of an LSI when installing it onto the board. Faulty installation may destroy

the LSI when the device is energized. In addition, a foreign matter getting in between LSI pins, pins and power supply,

and pins and GND may cause shorting and destruction of the LSI.

8. About power supply startup and shutdown

When starting up a power supply, be sure to place the MUTEX pin (pin 28) at “L” level. When shutting down a power

supply also, be sure to place the pin at “L” level. Those processes reduce pop noises generated upon turning on and off

the power supply. In addition, all power supply pins must be started up and shut down at the same time.

9. About WARNING output pin (pin 26) and ERROR output pin (pin 27)

A WARNING flag is output from the WARNING output pin upon operation of the high-temperature protection function and

under-voltage protection function. And an ERROR flag is output from the ERROR output pin upon operation of VCC/GND

shorting protection function and speaker DC voltage applying protection function. These flags are the function which the

condition of this product is shown in. The use which aimed at the protection except for this product is prohibition.

10.About N.C. pins (pins 8, 9, 10, 11, 13, 24, 29, 30, 37, and 48)

The N.C. (Non connection) pins are not connected with an internal circuit. Leave the pins open or connect them to GND.

www.rohm.com

2010.05 - Rev.B

14/15

Technical Note

BD5427MUV

●Ordering part number

B

D

5

4

2

7

M U V - E

2

Part No

Part No.

Package

MUV: VQFN048V7070

Packaging and forming specification

E2: Embossed tape and reel

VQFN048V7070

7.0 0.1

Tape

Embossed carrier tape

1500pcs

Quantity

E2

Direction

of feed

1PIN MARK

The direction is the 1pin of product is at the upper left when you hold

reel on the left hand and you pull out the tape on the right hand

(

)

S

0.08

S

4.7 0.1

C0.2

1

12

13

48

37

24

25

36

Direction of feed

1pin

+0.05

0.75

0.25

-0.04

0.5

Reel

(Unit : mm)

Order quantity needs to be multiple of the minimum quantity.

∗

www.rohm.com

2010.05 - Rev.B

15/15

Notice

N o t e s

No copying or reproduction of this document, in part or in whole, is permitted without the

consent of ROHM Co.,Ltd.

The content speciﬁed herein is subject to change for improvement without notice.

The content speciﬁed herein is for the purpose of introducing ROHM's products (hereinafter

"Products"). If you wish to use any such Product, please be sure to refer to the speciﬁcations,

which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein

illustrate the standard usage and operations of the Products. The peripheral conditions must

be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information speciﬁed in this document.

However, should you incur any damage arising from any inaccuracy or misprint of such

information, ROHM shall bear no responsibility for such damage.

The technical information speciﬁed herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or

implicitly, any license to use or exercise intellectual property or other rights held by ROHM and

other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the

use of such technical information.

The Products speciﬁed in this document are intended to be used with general-use electronic

equipment or devices (such as audio visual equipment, ofﬁce-automation equipment, commu-

nication devices, electronic appliances and amusement devices).

The Products speciﬁed in this document are not designed to be radiation tolerant.

While ROHM always makes efforts to enhance the quality and reliability of its Products, a

Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard

against the possibility of physical injury, ﬁre or any other damage caused in the event of the

failure of any Product, such as derating, redundancy, ﬁre control and fail-safe designs. ROHM

shall bear no responsibility whatsoever for your use of any Product outside of the prescribed

scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or

system which requires an extremely high level of reliability the failure or malfunction of which

may result in a direct threat to human life or create a risk of human injury (such as a medical

instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-

controller or other safety device). ROHM shall bear no responsibility in any way for use of any

of the Products for the above special purposes. If a Product is intended to be used for any

such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology speciﬁed herein that may

be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to

obtain a license or permit under the Law.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

www.rohm.com

R1010

A


型号：	BD5427MUV_10
厂家：	ROHM
描述：	Analog Input / BTL Output Class-D Speaker Amplifier 模拟量输入/输出BTL D类扬声器放大器放大器
文件：	总16页 (文件大小：401K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD5427MUV_10 [ROHM]

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