bd5451efv ROHM Co. Ltd., bd5451efv Datasheet

bd5451efv

Manufacturer Part Number

bd5451efv

Description

Stereo Class D Speaker Amplifier

Manufacturer

ROHM Co. Ltd.

Datasheet

1.BD5451EFV.pdf (5 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

bd5451efv-E2

Manufacturer:

TDK-EPCOS

Quantity:

32 000

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Download datasheet (151Kb)

●Absolute maximum ratings (Ta=25℃)

PACKAGE:

STRUCTURE:

PRODUCT:

TYPE:

FEATURES:

1) This IC has one system of digital audio

2) Low supply current at RESET mode.

3) The decrease in sound quality because of the change of the power supply voltage is prevented with the

4) S/N of the system can be optimized by adjusting the gain setting among 2 steps. (20dB / 26dB)

5) Available for Monaural mode.

6) Within the wide range of the power supply voltage, it is possible to operate in a single power supply. (10～18V)

7) It contributes to miniaturizing, making to the thin type, and the power saving of the system by high efficiency and

8) Eliminates pop noise generated when the power supply goes on/off, or when the power supply is suddenly shut

9) This IC is a highly reliable design to which it has various protection functions.

10) Small package (HTSSOP-B28 package) contributes to reduction of PCB area.

low heat.

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.

off. High quality muting performance is realized by using the soft-muting technology.

(High temperature protection, Under voltage protection, Output short protection, Output DC voltage protection

and Clock stop protection, (MCLK, BCLK, LRCLK)

Supply voltage

Power dissipation

Input voltage

Terminal voltage 1

Terminal voltage 2

Terminal voltage 3

Open-drain terminal voltage

Operating temperature range

Storage temperature range

Maximum junction temperature

S format、SDATA: 16 / 20 / 24bit、LRCLK: 32kHz / 44.1kHz / 48kHz、BCLK: 64fs(fixed)、MCLK: 256fs(fixed))

※3

※4

※1

※2

Derating in done at 26.4mW/℃ for operating above Ta＝25℃. There are thermal via on the board.

Derating in done at 37.6mW/℃ for operating above Ta＝25℃. There are thermal via on the board.

70mm×70mm×1.6mm, FR4, 2-layer glass epoxy board (Copper on bottom layer : 70mm×70mm)

70mm×70mm×1.6mm, FR4, 4-layer glass epoxy board (Copper on bottom layer : 70mm×70mm)

The voltage that can be applied reference to GND (Pin 7, 19, 24).

Do not, however exceed Pd and Tjmax=150℃.

Silicon Semiconductor integrated circuits

Stereo Class D Speaker Amplifier

BD5451EFV

HTSSOP-B28

Item

Symbol

Tjmax

VCC

Topr

Tstg

PIN1

PIN2

PIN3

ERR

interface.

-55 ～ +150

-0.3 ～ 4.5

-0.3 ～ 7.0

-0.3 ～ 4.5

-25 ～ +85

-0.3 ～ 22

REV. A

+150

Limit

3.3

4.7

Unit

℃

Pin 14, 15, 16, 27, 28

Pin 1～6, 13

Pin 8, 11, 12

Pin 9

Pin 17, 18, 20～23, 25, 26

Pin 10

Conditions

※1 ※2

※1

※3

※4

※1

1/4

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bd5451efv Summary of contents

Page 1

... STRUCTURE: Silicon Semiconductor integrated circuits PRODUCT: Stereo Class D Speaker Amplifier BD5451EFV TYPE: PACKAGE: HTSSOP-B28 FEATURES: 1) This IC has one system of digital audio format、SDATA 24bit、LRCLK: 32kHz / 44.1kHz / 48kHz、BCLK: 64fs(fixed)、MCLK: 256fs(fixed)) 2) Low supply current at RESET mode. 3) The decrease in sound quality because of the change of the power supply voltage is prevented with the feedback circuitry of the output ...

Page 2

Item Supply voltage Minimum load impedance ※5 Do not, however exceed Pd. No radiation-proof design. ●Electrical characteristics （Unless otherwise specified Ta=25℃, V Output LC filter ： L=10μH, C=0.1μF） Item Total circuit Circuit current (Reset mode) Circuit current ...

Page 3

... BD5451EFV ●Block diagram ×8 Over 7 GNDA Sampling Digital 8 FILP Filter 9 REG3 10 GNDA 11 REG_G 12 FILA Gain 13 Selector Output Short Protection Output DC Voltage Protection 14 Under Voltage Protection VCCA Over Voltage Protection Clock Stop Protection High Temperature Protection Lot No ...

Page 4

Notes for use ● 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 ...

Page 5

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 ...

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