BD5427EFS_10_技术文档

Middle Power Class-D Speaker Amplifiers

Analog Input / BTL Output

Class-D Speaker Amplifier

BD5427EFS

No.10075EBT06

●Description

BD5427EFS 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).

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.

HTSSOP-A44(5mm × 7.5mm × 1.0mm, pitch 0.8mm

●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.

Parameter

Supply voltage

Symbol

VCC

Ratings

+20

Unit

V

Conditions

Pin 7, 8, 15, 16, 29, 30, 37, 38, 40

(Note 1, 2)

2.0

4.5

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 to +7.2

-0.2 to Vcc+0.2

-0.2 to +7.2

-40 to +85

-55 to +150

+150

V

Pin 1, 44 (Note 1)

Pin 20, 24 (Note 1)

Pin 23 (Note 1)

V

℃

Tstg

Tjmax

(Note 1) A voltage that can be applied with reference to GND (pins 11, 12, 33, 34, and 43)

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

(Note 3) 70mm × 70mm × 1.6mm FR4 One-sided glass epoxy board (Back copper foil 0%) installed.

If used under Ta=25℃or higher, reduce 16mW for increase of every 1℃. The board is provided with thermal via.

(Note 4) 70mm × 70mm × 1.6mm FR4 Both-sided glass epoxy board (Back copper foil 100%) installed.

If used under Ta=25℃or higher, reduce 36mW for increase of every 1℃. The board is provided with thermal via.

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2010.05 - Rev.B

1/15

Technical Note

BD5427EFS

●Operating Conditions

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

Parameter

Symbol

VCC

RL

Ratings

+10 to +16.5

6 to 16

Unit

V

Conditions

Supply voltage

Pin 7, 8, 15, 16, 29, 30, 37, 38, 40

(Note 5)

Load resistance

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.

Parameter

Symbol

Limits

Unit

Conditions

Whole circuit

Circuit current 1 (Sampling mode)

ICC1

ICC2

25

10

mA

With no signal

MUTEX = “L”

Circuit current 2 (Muting mode)

Control circuit

“H” level input voltage

VIH

VIL

2.3 to 12

0 to 0.8

V

MUTEX, MS

“L” level input voltage

Audio circuit

Voltage gain

GV

PO

28

7

dB

W

PO = 1W

Maximum output power 1 (Note 6)

Total harmonic distortion (Note 6)

Crosstalk

THD+N = 10%

THD

CT

0.1

85

80

1

%

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

PO = 1W, Rg = 0Ω, BW = IHF-A

dB

Output noise voltage (Sampling mode)

Residual noise voltage (Muting mode)

Internal sampling clock frequency

VNO

VNOM

FOSC

µVrms Rg = 0Ω, BW = IHF-A

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

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

BD5427EFS

●Electrical characteristic curves (Reference data)

(1) Under Stereo Operation(RL=8Ω)

100

10

Vcc=12V

R_L=8Ω

10

1

BW=20～20kHz

Po=1W

BW=20～20kHz

6kHz

1

0.1

0.01

1kHz

0.1

0.01

100Hz

10

100

1000

10000

100000

0.001

0.01

1

100

FREQUENCY (Hz)

OUTPUT POWER (W)

Fig. 1 THD+N － Output power

Fig. 2 THD+N － Frequency

0

-20

40

Vcc=12V

R_L=8Ω

Po=1W

35

30

25

20

15

10

5

-40

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

fin=1kHz

BW=20～20kHz

-20

-40

-60

-80

-100

0

8

0.001

0.01

0.1

1

10

100

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

BD5427EFS

●Electrical characteristic curves (Reference data) – Continued

.

100

90

80

70

60

50

40

100

90

80

70

60

50

40

30

20

10

0

30

20

10

0

Vcc=10V

L

Vcc=12V

L

R =8Ω

fin=1kHz

R =8Ω

fin=1kHz

0

5

10

15

20

0

5

10

15

20

OUTPUT POWER (W/ch)

Fig. 7 Efficiency - Output power

Fig. 8 Efficiency - Output power

100

3

2

1

0

90

80

70

60

50

40

30

20

10

0

Vcc=16.5V

Vcc=12V

Vcc=10V

Vcc=16.5V

RL=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

W無i信tho号u時t signal

Vcc=12V

-20

L

R =8Ω

-40

-60

Without signal

無信号時

BW=20～20kHz

-80

Sampling

Mute

-100

-120

-140

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

BD5427EFS

●Electrical characteristic curves (Reference data) – Continued

.

M U T E X

Pin 20

M U T E X

Pin 20

V cc = 1 2 V

1 0 V/div

V cc = 1 2 V

_L= 8

1 0 V/div

5 V/div

R

_L= 8

Ω

R

Ω

P o = 5 0 0 m W

fin = 5 0 0 H z

P o = 5 0 0 m W

fin = 5 0 0 H z

T M

Pin 2 6

T M

Pin 26

5 V/div

2 V/div

Speaker

output

Speaker

output

1 0 m se c/div

1 0 m sec/div

Fig. 13 Wave form when Releasing Soft-mute

Fig. 14 Wave form when Activating Soft-mute

VCCA

VHOLD

Pin 27

VHOLD

Pin 27

5V/div

Vcc=12V

R^L=8 Ω

Vcc=12V

R^L=8 Ω

Po=500mW

fin=3kHz

Po=500mW

fin=3kHz

TM

Pin 26

TM

Pin 26

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

BD5427EFS

●Electrical characteristic curves (Reference data)

(2) Under Stereo Operation(RL=6Ω)

.

25

R_L=6Ω

fin=1kHz

THD=10%

20

15

10

5

0

8

10

12

14

16

18

VCC (V)

Fig. 17 Output power - Power supply voltage

100

90

80

70

60

50

40

30

20

10

0

90

80

70

60

50

40

30

20

10

0

Vcc=10V

RL=6Ω

fin=1kHz

Vcc=12V

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

TOTAL OUTPUT POWER (W)

Fig. 21 Current consumption - Output power

15

20

25 30

35 40

OUTPUT POWER (W/ch)

Fig. 20 Efficiency - 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

BD5427EFS

●Pin Assignment

Top View

DRIVER

2P

DRIVER

2N

DRIVER

1P

DRIVER

1N

Fig. 22 Pin Assignment Diagram

●Outer Dimensions and Inscriptions

18.5 ± 0.1

(MAX 18.85 include BURR)

(6.0)

TYPE

23

44

BD5427EFS

22

1

0.85

1PIN MARK

Lot No.

0.8

(Unit: mm)

Fig. 23 Outer Dimensions and Inscriptions of HTSSOP-A44 Package

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2010.05 - Rev.B

7/15

Technical Note

BD5427EFS

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

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

40

ch1 Analog signal input pin

ch2 Analog signal input pin

20k

1

44

IN1

IN2

1/44

43

3.5V

Input audio signal via a capacitor.

ch1 positive bootstrap pin

Connect a capacitor

6

BSP1P

VCCP1P

OUT1P

GNDP1

OUT1N

VCCP1N

BSP1N

-

7,8

6

ch1 positive power system power

supply pin

7, 8

Vcc

9,10

ch1 positive PWM signal output pin

Connect with output LPF.

9, 10

11, 12

13, 14

15, 16

17

Vcc to 0V

11,12

0V

ch1 power system GND pin

15,

16

17

ch1 negative PWM signal output pin

Connect with output LPF

Vcc to 0V

13,14

ch1 negative power system power

supply pin

Vcc

11,12

ch1 negative bootstrap pin

Connect a capacitor.

-

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2010.05 - Rev.B

8/15

Technical Note

BD5427EFS

●Explanation of Pin Functions - continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

40

Warning output pin

2k

Pin to notify operation warning.

H: Under warning

18

H: 5V

L: 0V

18

WARNING

L: Normal operation

Connect a resister.

43

40

Error output pin

2k

A pin for notifying operation errors.

H: Error

19

H: 5V

L: 0V

19

ERROR

L: Normal operation

Connect a resister.

43

40

120k

Audio mute control pin

20

MUTEX

-

H: Mute off

L: Mute on

43

2, 3

4, 5

21, 22

N.C. pin

N.C.

-

Nothing is connected with IC internal circuit.

40

Sampling clock signal input/output pin

23

OSC

-

23

43

When using two or more sampling clocks,

connect via a capacitor.

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2010.05 - Rev.B

9/15

Technical Note

BD5427EFS

●Explanation of Pin Functions - continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

40

Master/Slave switching pin

120k

24

43

Switching of master/slave functions on a

sampling clock signal.

H: Slave operation

24

MS

-

L: Master operation

40

Internal PWM sampling clock frequency

setting pin

25

26

27

ROSC

5.6V

25

43

Usually the pin is used open.

To adjust an internal sampling clock

frequency, connect a resister.

40

Audio muting constant setting pin

Connect a capacitor.

TM

0 to 5V

26

43

40

Instantaneous power interruption

detecting voltage setting pin

VHOLD

0.68×Vcc

27

43

Connect a capacitor.

To adjust a detecting voltage, connect a

resister.

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2010.05 - Rev.B

10/15

Technical Note

BD5427EFS

●Explanation of Pin Functions - continued

No.

Symbol

Pin voltage

Pin description

Internal equalizing circuit

29,30

ch2 negative bootstrap pin

Connect a capacitor.

28

BSP2N

-

2 8

29, 30

31, 32

33, 34

35, 36

37, 38

VCCP2N

OUT2N

GNDP2

OUT2P

VCCP2P

Vcc

Vcc to 0V

0V

ch2 negative power system power supply pin

31,32

ch2 negative PWM signal output pin

Connect an output LPF.

ch2 power system GND pin

33,34

37,38

ch2 positive PWM signal output pin

Connect an output LPF.

Vcc to 0V

Vcc

3 9

ch2 positive power system power supply pin

35,36

ch2 positive bootstrap pin

Connect a capacitor.

39

40

BSP2P

VCCA

-

33,34

Vcc

Analog system power pin

40

PWM system bias pin

Connect a capacitor.

Vcc+35

12

41

FILP

41

43

40

Analog signal system bias pin

Connect a capacitor.

42

43

42

43

FILA

3.5V

GNDA

0V

Analog system power supply pin

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2010.05 - Rev.B

11/15

Technical Note

BD5427EFS

●Application Circuit Diagram

・Vcc=10V to 16.5V

C32

C35

C31

GNDA

C43

VCCA

C38

C37

GNDD

C40

C39

C28

C41

C29

C42

DRIVER

2P

2N

DRIVER

1P

DRIVER

1N

C7

C8

C15

C6

C17

C9

C13

C10

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

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2010.05 - Rev.B

12/15

Technical Note

BD5427EFS

able 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 BD5427EFS

ROHM HTSSOP-A44

GRM219B31E684KA88D MURATA 2012 0805

GRM188R11H104KA93 MURATA 1608 0603

GRM21BB11H104KA01 MURATA 2012 0805

-

1

4

5

4

2

1

2

1

3

2

IC1

C6, C17, C28, C39

C7, C15, C29, C37, C40

C9, C13, C31, C35

C1, C44

C

R

0.68µF

0.1µF

2.2µF

0.47µF

3.3µF

0.1µF

1µF

25V

50V

25V

50V

25V

16V

25V

50V

±10%

±20%

±10%

±20%

±1%

±10%

3

4

±10%

5

25ST225M3216

50ST474M3225

Rubycon 3225 1210

±5%

6

±5%

C10, C32

7

GRM21BB31E335KA75 MURATA 2012 0805

±10%

C27

8

GRM188B11E104KA

GRM21BB11C105KA

MURATA 1608 0603

MURATA 2012 0805

±10%

C23, C26

9

±10%

C41

10

11

12

GRM21BB31C106KE15 MURATA 2012 0805

10µF

100kΩ

±10%

C42

25SVPD10M

SANYO 6666 2626

±25%

C8, C38, C43

R18, R19

MCR01MZPF1003

ROHM

1005 0402

±200ppm/℃

Configuration

mm

DC

Rated

No. Item

Part Number

7G09B-330M

Vendor

Value

Tolerance

±20%

Quantity

2

Reference

Resistance DC Current

13

L

SAGAMI

10×9×10

33µH×2

52mΩmax. 2.0A max.

L9, L13, L31, L35

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2010.05 - Rev.B

13/15

Technical Note

BD5427EFS

●Notes on Usage

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 (11, 12, 33, 34, 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

θ^ja



_^1

_^η

Pdiss  PO -1^_



W



Power dissipation



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 20) 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 18) and ERROR output pin (pin 19)

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 2, 3, 4, 5, 21 and 22)

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

BD5427EFS

●Ordering part number

B

D

- E

2

5

4

2

7

E

F

S

Part No.

Package

EFS:HTSSOP-44

Packaging and forming specification

E2: Embossed tape and reel

HTSSOP-A44

18.5 0.1

(MAX 18.85 include BURR)

Tape

Embossed carrier tape (with dry pack)

+

−

6°

(6.0)

4°

44

23

Quantity

1500pcs

E2

Direction

of feed

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

(

)

22

1

1PIN MARK

0.85

+0.05

0.17

-

0.03

S

0.08 S

0.08 ^M

0.8

+0.05

0.37

-

0.04

Direction of feed

1pin

Reel

Order quantity needs to be multiple of the minimum quantity.

(Unit : mm)

∗

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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：	BD5427EFS_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：508K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD5427EFS_10 [ROHM]

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